Add DPT (#15991)

* First draft

* More improvements

* Add fusion blocks

* Make conversion script work for dpt_large

* Make conversion script work

* Improve implementation

* Improve conversion script

* Add DPTForSemanticSegmentation

* Make conversion work for semantic segmentation

* Add tests

* Remove print statements

* First draft

* Redesign neck

* Improve tests

* Improve implementation some more

* Make neck output list of tensors

* Improve neck and feature extractor

* Fix integration tests

* Make more tests pass

* Make all tests pass

* Add missing config archive map

* Add in_index attribute to make heads accept list of tensors

* Apply suggestions from code review

* Apply suggestions from code review
Co-authored-by: Sylvain Gugger <35901082+sgugger@users.noreply.github.com>

* Apply some more suggestions

* Add copied from statements

* Remove assert

* Apply suggestions from code review

* Apply suggestions from code review

* Remove DPTInterpolate in favor of nn.Upsample

* Add comments

* Apply suggestions from code review

* Apply suggestions from code review

* Add proposed design

* Update design

* Add DPTReassembleLayer

* Add DPTFeatureFusionStage

* Apply more suggestions from code review

* Apply suggestions from code review

* Apply suggestions from code review

* Fix rebase

* Update in_index and out_indices

* Fix conversion script

* Fix code quality

* Add model to toctree and use DepthEstimatorOutput

* Fix rebase

* Fix code examples

* Improve code

* Fix copied from statements

* Apply suggestions from code review

* Remove compute_loss method

* Apply suggestions from code review

* Fix documentation tests file

* Remove test.py file

* Improve doc example
Co-authored-by: Niels Rogge <nielsrogge@Nielss-MacBook-Pro.local>
Co-authored-by: Sylvain Gugger <35901082+sgugger@users.noreply.github.com>
Co-authored-by: Niels Rogge <nielsrogge@nielss-mbp.home>

README.md

@@ -261,6 +261,7 @@ Current number of checkpoints: ![](https://img.shields.io/endpoint?url=https://h
 1. **[DPR](https://huggingface.co/docs/transformers/model_doc/dpr)** (from Facebook) released with the paper [Dense Passage Retrieval
 for Open-Domain Question Answering](https://arxiv.org/abs/2004.04906) by Vladimir Karpukhin, Barlas Oğuz, Sewon
 Min, Patrick Lewis, Ledell Wu, Sergey Edunov, Danqi Chen, and Wen-tau Yih.
+1. **[DPT](https://huggingface.co/docs/transformers/master/model_doc/dpt)** (from Intel Labs) released with the paper [Vision Transformers for Dense Prediction](https://arxiv.org/abs/2103.13413) by René Ranftl, Alexey Bochkovskiy, Vladlen Koltun.
 1. **[EncoderDecoder](https://huggingface.co/docs/transformers/model_doc/encoder-decoder)** (from Google Research) released with the paper [Leveraging Pre-trained Checkpoints for Sequence Generation Tasks](https://arxiv.org/abs/1907.12461) by Sascha Rothe, Shashi Narayan, Aliaksei Severyn.
 1. **[ELECTRA](https://huggingface.co/docs/transformers/model_doc/electra)** (from Google Research/Stanford University) released with the paper [ELECTRA: Pre-training text encoders as discriminators rather than generators](https://arxiv.org/abs/2003.10555) by Kevin Clark, Minh-Thang Luong, Quoc V. Le, Christopher D. Manning.
 1. **[FlauBERT](https://huggingface.co/docs/transformers/model_doc/flaubert)** (from CNRS) released with the paper [FlauBERT: Unsupervised Language Model Pre-training for French](https://arxiv.org/abs/1912.05372) by Hang Le, Loïc Vial, Jibril Frej, Vincent Segonne, Maximin Coavoux, Benjamin Lecouteux, Alexandre Allauzen, Benoît Crabbé, Laurent Besacier, Didier Schwab.

README_ko.md

@@ -240,6 +240,7 @@ Flax, PyTorch, TensorFlow 설치 페이지에서 이들을 conda로 설치하는
 1. **[DistilBERT](https://huggingface.co/docs/transformers/model_doc/distilbert)** (from HuggingFace), released together with the paper [DistilBERT, a distilled version of BERT: smaller, faster, cheaper and lighter](https://arxiv.org/abs/1910.01108) by Victor Sanh, Lysandre Debut and Thomas Wolf. The same method has been applied to compress GPT2 into [DistilGPT2](https://github.com/huggingface/transformers/tree/main/examples/distillation), RoBERTa into [DistilRoBERTa](https://github.com/huggingface/transformers/tree/main/examples/distillation), Multilingual BERT into [DistilmBERT](https://github.com/huggingface/transformers/tree/main/examples/distillation) and a German version of DistilBERT.
 1. **[DiT](https://huggingface.co/docs/transformers/model_doc/dit)** (from Microsoft Research) released with the paper [DiT: Self-supervised Pre-training for Document Image Transformer](https://arxiv.org/abs/2203.02378) by Junlong Li, Yiheng Xu, Tengchao Lv, Lei Cui, Cha Zhang, Furu Wei.
 1. **[DPR](https://huggingface.co/docs/transformers/model_doc/dpr)** (from Facebook) released with the paper [Dense Passage Retrieval for Open-Domain Question Answering](https://arxiv.org/abs/2004.04906) by Vladimir Karpukhin, Barlas Oğuz, Sewon Min, Patrick Lewis, Ledell Wu, Sergey Edunov, Danqi Chen, and Wen-tau Yih.
+1. **[DPT](https://huggingface.co/docs/transformers/master/model_doc/dpt)** (from Intel Labs) released with the paper [Vision Transformers for Dense Prediction](https://arxiv.org/abs/2103.13413) by René Ranftl, Alexey Bochkovskiy, Vladlen Koltun.
 1. **[ELECTRA](https://huggingface.co/docs/transformers/model_doc/electra)** (from Google Research/Stanford University) released with the paper [ELECTRA: Pre-training text encoders as discriminators rather than generators](https://arxiv.org/abs/2003.10555) by Kevin Clark, Minh-Thang Luong, Quoc V. Le, Christopher D. Manning.
 1. **[EncoderDecoder](https://huggingface.co/docs/transformers/model_doc/encoder-decoder)** (from Google Research) released with the paper [Leveraging Pre-trained Checkpoints for Sequence Generation Tasks](https://arxiv.org/abs/1907.12461) by Sascha Rothe, Shashi Narayan, Aliaksei Severyn.
 1. **[FlauBERT](https://huggingface.co/docs/transformers/model_doc/flaubert)** (from CNRS) released with the paper [FlauBERT: Unsupervised Language Model Pre-training for French](https://arxiv.org/abs/1912.05372) by Hang Le, Loïc Vial, Jibril Frej, Vincent Segonne, Maximin Coavoux, Benjamin Lecouteux, Alexandre Allauzen, Benoît Crabbé, Laurent Besacier, Didier Schwab.

README_zh-hans.md

@@ -264,6 +264,7 @@ conda install -c huggingface transformers
 1. **[DistilBERT](https://huggingface.co/docs/transformers/model_doc/distilbert)** (来自 HuggingFace), 伴随论文 [DistilBERT, a distilled version of BERT: smaller, faster, cheaper and lighter](https://arxiv.org/abs/1910.01108) 由 Victor Sanh, Lysandre Debut and Thomas Wolf 发布。 同样的方法也应用于压缩 GPT-2 到 [DistilGPT2](https://github.com/huggingface/transformers/tree/main/examples/distillation), RoBERTa 到 [DistilRoBERTa](https://github.com/huggingface/transformers/tree/main/examples/distillation), Multilingual BERT 到 [DistilmBERT](https://github.com/huggingface/transformers/tree/main/examples/distillation) 和德语版 DistilBERT。
 1. **[DiT](https://huggingface.co/docs/transformers/model_doc/dit)** (来自 Microsoft Research) 伴随论文 [DiT: Self-supervised Pre-training for Document Image Transformer](https://arxiv.org/abs/2203.02378) 由 Junlong Li, Yiheng Xu, Tengchao Lv, Lei Cui, Cha Zhang, Furu Wei 发布。
 1. **[DPR](https://huggingface.co/docs/transformers/model_doc/dpr)** (来自 Facebook) 伴随论文 [Dense Passage Retrieval for Open-Domain Question Answering](https://arxiv.org/abs/2004.04906) 由 Vladimir Karpukhin, Barlas Oğuz, Sewon Min, Patrick Lewis, Ledell Wu, Sergey Edunov, Danqi Chen, and Wen-tau Yih 发布。
+1. **[DPT](https://huggingface.co/docs/transformers/master/model_doc/dpt)** (来自 Intel Labs) 伴随论文 [Vision Transformers for Dense Prediction](https://arxiv.org/abs/2103.13413) 由 René Ranftl, Alexey Bochkovskiy, Vladlen Koltun 发布。
 1. **[ELECTRA](https://huggingface.co/docs/transformers/model_doc/electra)** (来自 Google Research/Stanford University) 伴随论文 [ELECTRA: Pre-training text encoders as discriminators rather than generators](https://arxiv.org/abs/2003.10555) 由 Kevin Clark, Minh-Thang Luong, Quoc V. Le, Christopher D. Manning 发布。
 1. **[EncoderDecoder](https://huggingface.co/docs/transformers/model_doc/encoder-decoder)** (来自 Google Research) 伴随论文 [Leveraging Pre-trained Checkpoints for Sequence Generation Tasks](https://arxiv.org/abs/1907.12461) 由 Sascha Rothe, Shashi Narayan, Aliaksei Severyn 发布。
 1. **[FlauBERT](https://huggingface.co/docs/transformers/model_doc/flaubert)** (来自 CNRS) 伴随论文 [FlauBERT: Unsupervised Language Model Pre-training for French](https://arxiv.org/abs/1912.05372) 由 Hang Le, Loïc Vial, Jibril Frej, Vincent Segonne, Maximin Coavoux, Benjamin Lecouteux, Alexandre Allauzen, Benoît Crabbé, Laurent Besacier, Didier Schwab 发布。

README_zh-hant.md

@@ -276,6 +276,7 @@ conda install -c huggingface transformers
 1. **[DistilBERT](https://huggingface.co/docs/transformers/model_doc/distilbert)** (from HuggingFace), released together with the paper [DistilBERT, a distilled version of BERT: smaller, faster, cheaper and lighter](https://arxiv.org/abs/1910.01108) by Victor Sanh, Lysandre Debut and Thomas Wolf. The same method has been applied to compress GPT2 into [DistilGPT2](https://github.com/huggingface/transformers/tree/main/examples/distillation), RoBERTa into [DistilRoBERTa](https://github.com/huggingface/transformers/tree/main/examples/distillation), Multilingual BERT into [DistilmBERT](https://github.com/huggingface/transformers/tree/main/examples/distillation) and a German version of DistilBERT.
 1. **[DiT](https://huggingface.co/docs/transformers/model_doc/dit)** (from Microsoft Research) released with the paper [DiT: Self-supervised Pre-training for Document Image Transformer](https://arxiv.org/abs/2203.02378) by Junlong Li, Yiheng Xu, Tengchao Lv, Lei Cui, Cha Zhang, Furu Wei.
 1. **[DPR](https://huggingface.co/docs/transformers/model_doc/dpr)** (from Facebook) released with the paper [Dense Passage Retrieval for Open-Domain Question Answering](https://arxiv.org/abs/2004.04906) by Vladimir Karpukhin, Barlas Oğuz, Sewon Min, Patrick Lewis, Ledell Wu, Sergey Edunov, Danqi Chen, and Wen-tau Yih.
+1. **[DPT](https://huggingface.co/docs/transformers/master/model_doc/dpt)** (from Intel Labs) released with the paper [Vision Transformers for Dense Prediction](https://arxiv.org/abs/2103.13413) by René Ranftl, Alexey Bochkovskiy, Vladlen Koltun.
 1. **[ELECTRA](https://huggingface.co/docs/transformers/model_doc/electra)** (from Google Research/Stanford University) released with the paper [ELECTRA: Pre-training text encoders as discriminators rather than generators](https://arxiv.org/abs/2003.10555) by Kevin Clark, Minh-Thang Luong, Quoc V. Le, Christopher D. Manning.
 1. **[EncoderDecoder](https://huggingface.co/docs/transformers/model_doc/encoder-decoder)** (from Google Research) released with the paper [Leveraging Pre-trained Checkpoints for Sequence Generation Tasks](https://arxiv.org/abs/1907.12461) by Sascha Rothe, Shashi Narayan, Aliaksei Severyn.
 1. **[FlauBERT](https://huggingface.co/docs/transformers/model_doc/flaubert)** (from CNRS) released with the paper [FlauBERT: Unsupervised Language Model Pre-training for French](https://arxiv.org/abs/1912.05372) by Hang Le, Loïc Vial, Jibril Frej, Vincent Segonne, Maximin Coavoux, Benjamin Lecouteux, Alexandre Allauzen, Benoît Crabbé, Laurent Besacier, Didier Schwab.

docs/source/_toctree.yml

@@ -206,6 +206,8 @@
       title: DiT
     - local: model_doc/dpr
       title: DPR
+    - local: model_doc/dpt
+      title: DPT
     - local: model_doc/electra
       title: ELECTRA
     - local: model_doc/encoder-decoder

docs/source/index.mdx

@@ -82,6 +82,7 @@ The library currently contains JAX, PyTorch and TensorFlow implementations, pret
 1. **[DialoGPT](model_doc/dialogpt)** (from Microsoft Research) released with the paper [DialoGPT: Large-Scale Generative Pre-training for Conversational Response Generation](https://arxiv.org/abs/1911.00536) by Yizhe Zhang, Siqi Sun, Michel Galley, Yen-Chun Chen, Chris Brockett, Xiang Gao, Jianfeng Gao, Jingjing Liu, Bill Dolan.
 1. **[DistilBERT](model_doc/distilbert)** (from HuggingFace), released together with the paper [DistilBERT, a distilled version of BERT: smaller, faster, cheaper and lighter](https://arxiv.org/abs/1910.01108) by Victor Sanh, Lysandre Debut and Thomas Wolf. The same method has been applied to compress GPT2 into [DistilGPT2](https://github.com/huggingface/transformers/tree/main/examples/research_projects/distillation), RoBERTa into [DistilRoBERTa](https://github.com/huggingface/transformers/tree/main/examples/research_projects/distillation), Multilingual BERT into [DistilmBERT](https://github.com/huggingface/transformers/tree/main/examples/research_projects/distillation) and a German version of DistilBERT.
 1. **[DPR](model_doc/dpr)** (from Facebook) released with the paper [Dense Passage Retrieval for Open-Domain Question Answering](https://arxiv.org/abs/2004.04906) by Vladimir Karpukhin, Barlas Oğuz, Sewon Min, Patrick Lewis, Ledell Wu, Sergey Edunov, Danqi Chen, and Wen-tau Yih.
+1. **[DPT](master/model_doc/dpt)** (from Intel Labs) released with the paper [Vision Transformers for Dense Prediction](https://arxiv.org/abs/2103.13413) by René Ranftl, Alexey Bochkovskiy, Vladlen Koltun.
 1. **[EncoderDecoder](model_doc/encoder-decoder)** (from Google Research) released with the paper [Leveraging Pre-trained Checkpoints for Sequence Generation Tasks](https://arxiv.org/abs/1907.12461) by Sascha Rothe, Shashi Narayan, Aliaksei Severyn.
 1. **[ELECTRA](model_doc/electra)** (from Google Research/Stanford University) released with the paper [ELECTRA: Pre-training text encoders as discriminators rather than generators](https://arxiv.org/abs/2003.10555) by Kevin Clark, Minh-Thang Luong, Quoc V. Le, Christopher D. Manning.
 1. **[FlauBERT](model_doc/flaubert)** (from CNRS) released with the paper [FlauBERT: Unsupervised Language Model Pre-training for French](https://arxiv.org/abs/1912.05372) by Hang Le, Loïc Vial, Jibril Frej, Vincent Segonne, Maximin Coavoux, Benjamin Lecouteux, Alexandre Allauzen, Benoît Crabbé, Laurent Besacier, Didier Schwab.
@@ -194,6 +195,7 @@ Flax), PyTorch, and/or TensorFlow.
 |            DETR             |       ❌       |       ❌       |       ✅        |         ❌         |      ❌      |
 |         DistilBERT          |       ✅       |       ✅       |       ✅        |         ✅         |      ✅      |
 |             DPR             |       ✅       |       ✅       |       ✅        |         ✅         |      ❌      |
+|             DPT             |       ❌       |       ❌       |       ✅        |         ❌         |      ❌      |
 |           ELECTRA           |       ✅       |       ✅       |       ✅        |         ✅         |      ✅      |
 |       Encoder decoder       |       ❌       |       ❌       |       ✅        |         ✅         |      ✅      |
 | FairSeq Machine-Translation |       ✅       |       ❌       |       ✅        |         ❌         |      ❌      |

docs/source/model_doc/dpt.mdx

+<!--Copyright 2022 The HuggingFace Team. All rights reserved.
+
+Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
+the License. You may obtain a copy of the License at
+
+http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
+an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
+specific language governing permissions and limitations under the License.
+-->
+
+# DPT
+
+## Overview
+
+The DPT model was proposed in [Vision Transformers for Dense Prediction](https://arxiv.org/abs/2103.13413) by René Ranftl, Alexey Bochkovskiy, Vladlen Koltun.
+DPT is a model that leverages the [Vision Transformer (ViT)](vit) as backbone for dense prediction tasks like semantic segmentation and depth estimation.
+
+The abstract from the paper is the following:
+
+*We introduce dense vision transformers, an architecture that leverages vision transformers in place of convolutional networks as a backbone for dense prediction tasks. We assemble tokens from various stages of the vision transformer into image-like representations at various resolutions and progressively combine them into full-resolution predictions using a convolutional decoder. The transformer backbone processes representations at a constant and relatively high resolution and has a global receptive field at every stage. These properties allow the dense vision transformer to provide finer-grained and more globally coherent predictions when compared to fully-convolutional networks. Our experiments show that this architecture yields substantial improvements on dense prediction tasks, especially when a large amount of training data is available. For monocular depth estimation, we observe an improvement of up to 28% in relative performance when compared to a state-of-the-art fully-convolutional network. When applied to semantic segmentation, dense vision transformers set a new state of the art on ADE20K with 49.02% mIoU. We further show that the architecture can be fine-tuned on smaller datasets such as NYUv2, KITTI, and Pascal Context where it also sets the new state of the art.*
+
+<img src="https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/dpt_architecture.jpg"
+alt="drawing" width="600"/> 
+
+<small> DPT architecture. Taken from the <a href="https://arxiv.org/abs/2103.13413" target="_blank">original paper</a>. </small>
+
+This model was contributed by [nielsr](https://huggingface.co/nielsr). The original code can be found [here](https://github.com/isl-org/DPT).
+
+## DPTConfig
+
+[[autodoc]] DPTConfig
+
+
+## DPTFeatureExtractor
+
+[[autodoc]] DPTFeatureExtractor
+    - __call__
+
+
+## DPTModel
+
+[[autodoc]] DPTModel
+    - forward
+
+
+## DPTForDepthEstimation
+
+[[autodoc]] DPTForDepthEstimation
+    - forward
+
+
+## DPTForSemanticSegmentation
+
+[[autodoc]] DPTForSemanticSegmentation
+    - forward
\ No newline at end of file

src/transformers/__init__.py

@@ -187,6 +187,7 @@ _import_structure = {
         "DPRReaderOutput",
         "DPRReaderTokenizer",
     ],
+    "models.dpt": ["DPT_PRETRAINED_CONFIG_ARCHIVE_MAP", "DPTConfig"],
     "models.electra": ["ELECTRA_PRETRAINED_CONFIG_ARCHIVE_MAP", "ElectraConfig", "ElectraTokenizer"],
     "models.encoder_decoder": ["EncoderDecoderConfig"],
     "models.flaubert": ["FLAUBERT_PRETRAINED_CONFIG_ARCHIVE_MAP", "FlaubertConfig", "FlaubertTokenizer"],
@@ -528,6 +529,7 @@ if is_vision_available():
     _import_structure["models.convnext"].append("ConvNextFeatureExtractor")
     _import_structure["models.deit"].append("DeiTFeatureExtractor")
     _import_structure["models.detr"].append("DetrFeatureExtractor")
+    _import_structure["models.dpt"].append("DPTFeatureExtractor")
     _import_structure["models.glpn"].append("GLPNFeatureExtractor")
     _import_structure["models.imagegpt"].append("ImageGPTFeatureExtractor")
     _import_structure["models.layoutlmv2"].append("LayoutLMv2FeatureExtractor")
@@ -947,6 +949,15 @@ if is_torch_available():
             "DPRReader",
         ]
     )
+    _import_structure["models.dpt"].extend(
+        [
+            "DPT_PRETRAINED_MODEL_ARCHIVE_LIST",
+            "DPTForDepthEstimation",
+            "DPTForSemanticSegmentation",
+            "DPTModel",
+            "DPTPreTrainedModel",
+        ]
+    )
     _import_structure["models.electra"].extend(
         [
             "ELECTRA_PRETRAINED_MODEL_ARCHIVE_LIST",
@@ -2543,6 +2554,7 @@ if TYPE_CHECKING:
         DPRReaderOutput,
         DPRReaderTokenizer,
     )
+    from .models.dpt import DPT_PRETRAINED_CONFIG_ARCHIVE_MAP, DPTConfig
     from .models.electra import ELECTRA_PRETRAINED_CONFIG_ARCHIVE_MAP, ElectraConfig, ElectraTokenizer
     from .models.encoder_decoder import EncoderDecoderConfig
     from .models.flaubert import FLAUBERT_PRETRAINED_CONFIG_ARCHIVE_MAP, FlaubertConfig, FlaubertTokenizer
@@ -2838,6 +2850,7 @@ if TYPE_CHECKING:
         from .models.convnext import ConvNextFeatureExtractor
         from .models.deit import DeiTFeatureExtractor
         from .models.detr import DetrFeatureExtractor
+        from .models.dpt import DPTFeatureExtractor
         from .models.glpn import GLPNFeatureExtractor
         from .models.imagegpt import ImageGPTFeatureExtractor
         from .models.layoutlmv2 import LayoutLMv2FeatureExtractor, LayoutLMv2Processor
@@ -2877,7 +2890,6 @@ if TYPE_CHECKING:
         from .utils.dummy_scatter_objects import *
 
     if is_torch_available():
-
         # Benchmarks
         from .benchmark.benchmark import PyTorchBenchmark
         from .benchmark.benchmark_args import PyTorchBenchmarkArguments
@@ -3188,6 +3200,13 @@ if TYPE_CHECKING:
             DPRQuestionEncoder,
             DPRReader,
         )
+        from .models.dpt import (
+            DPT_PRETRAINED_MODEL_ARCHIVE_LIST,
+            DPTForDepthEstimation,
+            DPTForSemanticSegmentation,
+            DPTModel,
+            DPTPreTrainedModel,
+        )
         from .models.electra import (
             ELECTRA_PRETRAINED_MODEL_ARCHIVE_LIST,
             ElectraForCausalLM,

src/transformers/models/__init__.py

@@ -50,6 +50,7 @@ from . import (
     distilbert,
     dit,
     dpr,
+    dpt,
     electra,
     encoder_decoder,
     flaubert,

src/transformers/models/auto/configuration_auto.py

@@ -29,6 +29,7 @@ logger = logging.get_logger(__name__)
 CONFIG_MAPPING_NAMES = OrderedDict(
     [
         # Add configs here
+        ("dpt", "DPTConfig"),
         ("decision_transformer", "DecisionTransformerConfig"),
         ("glpn", "GLPNConfig"),
         ("maskformer", "MaskFormerConfig"),
@@ -134,6 +135,7 @@ CONFIG_MAPPING_NAMES = OrderedDict(
 CONFIG_ARCHIVE_MAP_MAPPING_NAMES = OrderedDict(
     [
         # Add archive maps here
+        ("dpt", "DPT_PRETRAINED_CONFIG_ARCHIVE_MAP"),
         ("glpn", "GLPN_PRETRAINED_CONFIG_ARCHIVE_MAP"),
         ("maskformer", "MASKFORMER_PRETRAINED_CONFIG_ARCHIVE_MAP"),
         ("poolformer", "POOLFORMER_PRETRAINED_CONFIG_ARCHIVE_MAP"),
@@ -224,6 +226,7 @@ CONFIG_ARCHIVE_MAP_MAPPING_NAMES = OrderedDict(
 MODEL_NAMES_MAPPING = OrderedDict(
     [
         # Add full (and cased) model names here
+        ("dpt", "DPT"),
         ("decision_transformer", "Decision Transformer"),
         ("glpn", "GLPN"),
         ("maskformer", "MaskFormer"),

src/transformers/models/auto/modeling_auto.py

@@ -28,6 +28,7 @@ logger = logging.get_logger(__name__)
 MODEL_MAPPING_NAMES = OrderedDict(
     [
         # Base model mapping
+        ("dpt", "DPTModel"),
         ("decision_transformer", "DecisionTransformerModel"),
         ("glpn", "GLPNModel"),
         ("maskformer", "MaskFormerModel"),
@@ -319,6 +320,7 @@ MODEL_FOR_SEMANTIC_SEGMENTATION_MAPPING_NAMES = OrderedDict(
         # Model for Semantic Segmentation mapping
         ("beit", "BeitForSemanticSegmentation"),
         ("segformer", "SegformerForSemanticSegmentation"),
+        ("dpt", "DPTForSemanticSegmentation"),
     ]
 )
 

src/transformers/models/dpt/__init__.py

+# flake8: noqa
+# There's no way to ignore "F401 '...' imported but unused" warnings in this
+# module, but to preserve other warnings. So, don't check this module at all.
+
+# Copyright 2022 The HuggingFace Team. All rights reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+from typing import TYPE_CHECKING
+
+from ...file_utils import _LazyModule, is_tokenizers_available, is_torch_available, is_vision_available
+
+
+_import_structure = {
+    "configuration_dpt": ["DPT_PRETRAINED_CONFIG_ARCHIVE_MAP", "DPTConfig"],
+}
+
+if is_vision_available():
+    _import_structure["feature_extraction_dpt"] = ["DPTFeatureExtractor"]
+
+if is_torch_available():
+    _import_structure["modeling_dpt"] = [
+        "DPT_PRETRAINED_MODEL_ARCHIVE_LIST",
+        "DPTForDepthEstimation",
+        "DPTForSemanticSegmentation",
+        "DPTModel",
+        "DPTPreTrainedModel",
+    ]
+
+
+if TYPE_CHECKING:
+    from .configuration_dpt import DPT_PRETRAINED_CONFIG_ARCHIVE_MAP, DPTConfig
+
+    if is_vision_available():
+        from .feature_extraction_dpt import DPTFeatureExtractor
+
+    if is_torch_available():
+        from .modeling_dpt import (
+            DPT_PRETRAINED_MODEL_ARCHIVE_LIST,
+            DPTForDepthEstimation,
+            DPTForSemanticSegmentation,
+            DPTModel,
+            DPTPreTrainedModel,
+        )
+
+
+else:
+    import sys
+
+    sys.modules[__name__] = _LazyModule(__name__, globals()["__file__"], _import_structure, module_spec=__spec__)

src/transformers/models/dpt/configuration_dpt.py

+# coding=utf-8
+# Copyright 2022 The HuggingFace Inc. team. All rights reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+""" DPT model configuration"""
+
+from ...configuration_utils import PretrainedConfig
+from ...utils import logging
+
+
+logger = logging.get_logger(__name__)
+
+DPT_PRETRAINED_CONFIG_ARCHIVE_MAP = {
+    "Intel/dpt-large": "https://huggingface.co/Intel/dpt-large/resolve/main/config.json",
+    # See all DPT models at https://huggingface.co/models?filter=dpt
+}
+
+
+class DPTConfig(PretrainedConfig):
+    r"""
+    This is the configuration class to store the configuration of a [`DPTModel`]. It is used to instantiate an DPT
+    model according to the specified arguments, defining the model architecture. Instantiating a configuration with the
+    defaults will yield a similar configuration to that of the DPT
+    [Intel/dpt-large](https://huggingface.co/Intel/dpt-large) architecture.
+
+    Configuration objects inherit from [`PretrainedConfig`] and can be used to control the model outputs. Read the
+    documentation from [`PretrainedConfig`] for more information.
+
+
+    Args:
+        hidden_size (`int`, *optional*, defaults to 768):
+            Dimensionality of the encoder layers and the pooler layer.
+        num_hidden_layers (`int`, *optional*, defaults to 12):
+            Number of hidden layers in the Transformer encoder.
+        num_attention_heads (`int`, *optional*, defaults to 12):
+            Number of attention heads for each attention layer in the Transformer encoder.
+        intermediate_size (`int`, *optional*, defaults to 3072):
+            Dimensionality of the "intermediate" (i.e., feed-forward) layer in the Transformer encoder.
+        hidden_act (`str` or `function`, *optional*, defaults to `"gelu"`):
+            The non-linear activation function (function or string) in the encoder and pooler. If string, `"gelu"`,
+            `"relu"`, `"selu"` and `"gelu_new"` are supported.
+        hidden_dropout_prob (`float`, *optional*, defaults to 0.1):
+            The dropout probabilitiy for all fully connected layers in the embeddings, encoder, and pooler.
+        attention_probs_dropout_prob (`float`, *optional*, defaults to 0.1):
+            The dropout ratio for the attention probabilities.
+        initializer_range (`float`, *optional*, defaults to 0.02):
+            The standard deviation of the truncated_normal_initializer for initializing all weight matrices.
+        layer_norm_eps (`float`, *optional*, defaults to 1e-12):
+            The epsilon used by the layer normalization layers.
+        image_size (`int`, *optional*, defaults to 384):
+            The size (resolution) of each image.
+        patch_size (`int`, *optional*, defaults to 16):
+            The size (resolution) of each patch.
+        num_channels (`int`, *optional*, defaults to 3):
+            The number of input channels.
+        qkv_bias (`bool`, *optional*, defaults to `True`):
+            Whether to add a bias to the queries, keys and values.
+        backbone_out_indices (`List[int]`, *optional*, defaults to `[2, 5, 8, 11]`):
+            Indices of the intermediate hidden states to use from backbone.
+        readout_type (`str`, *optional*, defaults to `"project"`):
+            The readout type to use when processing the readout token (CLS token) of the intermediate hidden states of
+            the ViT backbone. Can be one of [`"ignore"`, `"add"`, `"project"`].
+
+            - "ignore" simply ignores the CLS token.
+            - "add" passes the information from the CLS token to all other tokens by adding the representations.
+            - "project" passes information to the other tokens by concatenating the readout to all other tokens before
+              projecting the
+            representation to the original feature dimension D using a linear layer followed by a GELU non-linearity.
+        reassemble_factors (`List[int]`, *optional*, defaults to `[4, 2, 1, 0.5]`):
+            The up/downsampling factors of the reassemble layers.
+        neck_hidden_sizes (`List[str]`, *optional*, defaults to [96, 192, 384, 768]):
+            The hidden sizes to project to for the feature maps of the backbone.
+        fusion_hidden_size (`int`, *optional*, defaults to 256):
+            The number of channels before fusion.
+        head_in_index (`int`, *optional*, defaults to -1):
+            The index of the features to use in the heads.
+        use_batch_norm_in_fusion_residual (`bool`, *optional*, defaults to `False`):
+            Whether to use batch normalization in the pre-activate residual units of the fusion blocks.
+        use_auxiliary_head (`bool`, *optional*, defaults to `True`):
+            Whether to use an auxiliary head during training.
+        auxiliary_loss_weight (`float`, *optional*, defaults to 0.4):
+            Weight of the cross-entropy loss of the auxiliary head.
+        semantic_loss_ignore_index (`int`, *optional*, defaults to 255):
+            The index that is ignored by the loss function of the semantic segmentation model.
+        semantic_classifier_dropout (`float`, *optional*, defaults to 0.1):
+            The dropout ratio for the semantic classification head.
+
+    Example:
+
+    ```python
+    >>> from transformers import DPTModel, DPTConfig
+
+    >>> # Initializing a DPT dpt-large style configuration
+    >>> configuration = DPTConfig()
+
+    >>> # Initializing a model from the dpt-large style configuration
+    >>> model = DPTModel(configuration)
+
+    >>> # Accessing the model configuration
+    >>> configuration = model.config
+    ```"""
+    model_type = "dpt"
+
+    def __init__(
+        self,
+        hidden_size=768,
+        num_hidden_layers=12,
+        num_attention_heads=12,
+        intermediate_size=3072,
+        hidden_act="gelu",
+        hidden_dropout_prob=0.0,
+        attention_probs_dropout_prob=0.0,
+        initializer_range=0.02,
+        layer_norm_eps=1e-12,
+        image_size=384,
+        patch_size=16,
+        num_channels=3,
+        qkv_bias=True,
+        backbone_out_indices=[2, 5, 8, 11],
+        readout_type="project",
+        reassemble_factors=[4, 2, 1, 0.5],
+        neck_hidden_sizes=[96, 192, 384, 768],
+        fusion_hidden_size=256,
+        head_in_index=-1,
+        use_batch_norm_in_fusion_residual=False,
+        use_auxiliary_head=True,
+        auxiliary_loss_weight=0.4,
+        semantic_loss_ignore_index=255,
+        semantic_classifier_dropout=0.1,
+        **kwargs
+    ):
+        super().__init__(**kwargs)
+
+        self.hidden_size = hidden_size
+        self.num_hidden_layers = num_hidden_layers
+        self.num_attention_heads = num_attention_heads
+        self.intermediate_size = intermediate_size
+        self.hidden_act = hidden_act
+        self.hidden_dropout_prob = hidden_dropout_prob
+        self.attention_probs_dropout_prob = attention_probs_dropout_prob
+        self.initializer_range = initializer_range
+        self.layer_norm_eps = layer_norm_eps
+        self.image_size = image_size
+        self.patch_size = patch_size
+        self.num_channels = num_channels
+        self.qkv_bias = qkv_bias
+        self.backbone_out_indices = backbone_out_indices
+        if readout_type not in ["ignore", "add", "project"]:
+            raise ValueError("Readout_type must be one of ['ignore', 'add', 'project']")
+        self.readout_type = readout_type
+        self.reassemble_factors = reassemble_factors
+        self.neck_hidden_sizes = neck_hidden_sizes
+        self.fusion_hidden_size = fusion_hidden_size
+        self.head_in_index = head_in_index
+        self.use_batch_norm_in_fusion_residual = use_batch_norm_in_fusion_residual
+        # auxiliary head attributes (semantic segmentation)
+        self.use_auxiliary_head = use_auxiliary_head
+        self.auxiliary_loss_weight = auxiliary_loss_weight
+        self.semantic_loss_ignore_index = semantic_loss_ignore_index
+        self.semantic_classifier_dropout = semantic_classifier_dropout

src/transformers/models/dpt/convert_dpt_to_pytorch.py

+# coding=utf-8
+# Copyright 2022 The HuggingFace Inc. team.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+"""Convert DPT checkpoints from the original repository. URL: https://github.com/isl-org/DPT"""
+
+
+import argparse
+import json
+from pathlib import Path
+
+import torch
+from PIL import Image
+
+import requests
+from huggingface_hub import cached_download, hf_hub_url
+from transformers import DPTConfig, DPTFeatureExtractor, DPTForDepthEstimation, DPTForSemanticSegmentation
+from transformers.utils import logging
+
+
+logging.set_verbosity_info()
+logger = logging.get_logger(__name__)
+
+
+def get_dpt_config(checkpoint_url):
+    config = DPTConfig()
+
+    if "large" in checkpoint_url:
+        config.hidden_size = 1024
+        config.intermediate_size = 4096
+        config.num_hidden_layers = 24
+        config.num_attention_heads = 16
+        config.backbone_out_indices = [5, 11, 17, 23]
+        config.neck_hidden_sizes = [256, 512, 1024, 1024]
+        expected_shape = (1, 384, 384)
+
+    if "ade" in checkpoint_url:
+        config.use_batch_norm_in_fusion_residual = True
+
+        config.num_labels = 150
+        repo_id = "datasets/huggingface/label-files"
+        filename = "ade20k-id2label.json"
+        id2label = json.load(open(cached_download(hf_hub_url(repo_id, filename)), "r"))
+        id2label = {int(k): v for k, v in id2label.items()}
+        config.id2label = id2label
+        config.label2id = {v: k for k, v in id2label.items()}
+        expected_shape = [1, 150, 480, 480]
+
+    return config, expected_shape
+
+
+def remove_ignore_keys_(state_dict):
+    ignore_keys = ["pretrained.model.head.weight", "pretrained.model.head.bias"]
+    for k in ignore_keys:
+        state_dict.pop(k, None)
+
+
+def rename_key(name):
+    if (
+        "pretrained.model" in name
+        and "cls_token" not in name
+        and "pos_embed" not in name
+        and "patch_embed" not in name
+    ):
+        name = name.replace("pretrained.model", "dpt.encoder")
+    if "pretrained.model" in name:
+        name = name.replace("pretrained.model", "dpt.embeddings")
+    if "patch_embed" in name:
+        name = name.replace("patch_embed", "patch_embeddings")
+    if "pos_embed" in name:
+        name = name.replace("pos_embed", "position_embeddings")
+    if "attn.proj" in name:
+        name = name.replace("attn.proj", "attention.output.dense")
+    if "proj" in name and "project" not in name:
+        name = name.replace("proj", "projection")
+    if "blocks" in name:
+        name = name.replace("blocks", "layer")
+    if "mlp.fc1" in name:
+        name = name.replace("mlp.fc1", "intermediate.dense")
+    if "mlp.fc2" in name:
+        name = name.replace("mlp.fc2", "output.dense")
+    if "norm1" in name:
+        name = name.replace("norm1", "layernorm_before")
+    if "norm2" in name:
+        name = name.replace("norm2", "layernorm_after")
+    if "scratch.output_conv" in name:
+        name = name.replace("scratch.output_conv", "head")
+    if "scratch" in name:
+        name = name.replace("scratch", "neck")
+    if "layer1_rn" in name:
+        name = name.replace("layer1_rn", "convs.0")
+    if "layer2_rn" in name:
+        name = name.replace("layer2_rn", "convs.1")
+    if "layer3_rn" in name:
+        name = name.replace("layer3_rn", "convs.2")
+    if "layer4_rn" in name:
+        name = name.replace("layer4_rn", "convs.3")
+    if "refinenet" in name:
+        layer_idx = int(name[len("neck.refinenet") : len("neck.refinenet") + 1])
+        # tricky here: we need to map 4 to 0, 3 to 1, 2 to 2 and 1 to 3
+        name = name.replace(f"refinenet{layer_idx}", f"fusion_stage.layers.{abs(layer_idx-4)}")
+    if "out_conv" in name:
+        name = name.replace("out_conv", "projection")
+    if "resConfUnit1" in name:
+        name = name.replace("resConfUnit1", "residual_layer1")
+    if "resConfUnit2" in name:
+        name = name.replace("resConfUnit2", "residual_layer2")
+    if "conv1" in name:
+        name = name.replace("conv1", "convolution1")
+    if "conv2" in name:
+        name = name.replace("conv2", "convolution2")
+    # readout blocks
+    if "pretrained.act_postprocess1.0.project.0" in name:
+        name = name.replace("pretrained.act_postprocess1.0.project.0", "neck.reassemble_stage.readout_projects.0.0")
+    if "pretrained.act_postprocess2.0.project.0" in name:
+        name = name.replace("pretrained.act_postprocess2.0.project.0", "neck.reassemble_stage.readout_projects.1.0")
+    if "pretrained.act_postprocess3.0.project.0" in name:
+        name = name.replace("pretrained.act_postprocess3.0.project.0", "neck.reassemble_stage.readout_projects.2.0")
+    if "pretrained.act_postprocess4.0.project.0" in name:
+        name = name.replace("pretrained.act_postprocess4.0.project.0", "neck.reassemble_stage.readout_projects.3.0")
+    # resize blocks
+    if "pretrained.act_postprocess1.3" in name:
+        name = name.replace("pretrained.act_postprocess1.3", "neck.reassemble_stage.layers.0.projection")
+    if "pretrained.act_postprocess1.4" in name:
+        name = name.replace("pretrained.act_postprocess1.4", "neck.reassemble_stage.layers.0.resize")
+    if "pretrained.act_postprocess2.3" in name:
+        name = name.replace("pretrained.act_postprocess2.3", "neck.reassemble_stage.layers.1.projection")
+    if "pretrained.act_postprocess2.4" in name:
+        name = name.replace("pretrained.act_postprocess2.4", "neck.reassemble_stage.layers.1.resize")
+    if "pretrained.act_postprocess3.3" in name:
+        name = name.replace("pretrained.act_postprocess3.3", "neck.reassemble_stage.layers.2.projection")
+    if "pretrained.act_postprocess4.3" in name:
+        name = name.replace("pretrained.act_postprocess4.3", "neck.reassemble_stage.layers.3.projection")
+    if "pretrained.act_postprocess4.4" in name:
+        name = name.replace("pretrained.act_postprocess4.4", "neck.reassemble_stage.layers.3.resize")
+    if "pretrained" in name:
+        name = name.replace("pretrained", "dpt")
+    if "bn" in name:
+        name = name.replace("bn", "batch_norm")
+    if "head" in name:
+        name = name.replace("head", "head.head")
+    if "encoder.norm" in name:
+        name = name.replace("encoder.norm", "layernorm")
+    if "auxlayer" in name:
+        name = name.replace("auxlayer", "auxiliary_head.head")
+
+    return name
+
+
+# we split up the matrix of each encoder layer into queries, keys and values
+def read_in_q_k_v(state_dict, config):
+    for i in range(config.num_hidden_layers):
+        # read in weights + bias of input projection layer (in timm, this is a single matrix + bias)
+        in_proj_weight = state_dict.pop(f"dpt.encoder.layer.{i}.attn.qkv.weight")
+        in_proj_bias = state_dict.pop(f"dpt.encoder.layer.{i}.attn.qkv.bias")
+        # next, add query, keys and values (in that order) to the state dict
+        state_dict[f"dpt.encoder.layer.{i}.attention.attention.query.weight"] = in_proj_weight[: config.hidden_size, :]
+        state_dict[f"dpt.encoder.layer.{i}.attention.attention.query.bias"] = in_proj_bias[: config.hidden_size]
+        state_dict[f"dpt.encoder.layer.{i}.attention.attention.key.weight"] = in_proj_weight[
+            config.hidden_size : config.hidden_size * 2, :
+        ]
+        state_dict[f"dpt.encoder.layer.{i}.attention.attention.key.bias"] = in_proj_bias[
+            config.hidden_size : config.hidden_size * 2
+        ]
+        state_dict[f"dpt.encoder.layer.{i}.attention.attention.value.weight"] = in_proj_weight[
+            -config.hidden_size :, :
+        ]
+        state_dict[f"dpt.encoder.layer.{i}.attention.attention.value.bias"] = in_proj_bias[-config.hidden_size :]
+
+
+# We will verify our results on an image of cute cats
+def prepare_img():
+    url = "http://images.cocodataset.org/val2017/000000039769.jpg"
+    im = Image.open(requests.get(url, stream=True).raw)
+    return im
+
+
+@torch.no_grad()
+def convert_dpt_checkpoint(checkpoint_url, pytorch_dump_folder_path, push_to_hub, model_name):
+    """
+    Copy/paste/tweak model's weights to our DPT structure.
+    """
+
+    # define DPT configuration based on URL
+    config, expected_shape = get_dpt_config(checkpoint_url)
+    # load original state_dict from URL
+    state_dict = torch.hub.load_state_dict_from_url(checkpoint_url, map_location="cpu")
+    # remove certain keys
+    remove_ignore_keys_(state_dict)
+    # rename keys
+    for key in state_dict.copy().keys():
+        val = state_dict.pop(key)
+        state_dict[rename_key(key)] = val
+    # read in qkv matrices
+    read_in_q_k_v(state_dict, config)
+
+    # load HuggingFace model
+    model = DPTForSemanticSegmentation(config) if "ade" in checkpoint_url else DPTForDepthEstimation(config)
+    model.load_state_dict(state_dict)
+    model.eval()
+
+    # Check outputs on an image
+    size = 480 if "ade" in checkpoint_url else 384
+    feature_extractor = DPTFeatureExtractor(size=size)
+
+    image = prepare_img()
+    encoding = feature_extractor(image, return_tensors="pt")
+
+    # forward pass
+    outputs = model(**encoding).logits if "ade" in checkpoint_url else model(**encoding).predicted_depth
+
+    # Assert logits
+    expected_slice = torch.tensor([[6.3199, 6.3629, 6.4148], [6.3850, 6.3615, 6.4166], [6.3519, 6.3176, 6.3575]])
+    if "ade" in checkpoint_url:
+        expected_slice = torch.tensor([[4.0480, 4.2420, 4.4360], [4.3124, 4.5693, 4.8261], [4.5768, 4.8965, 5.2163]])
+    assert outputs.shape == torch.Size(expected_shape)
+    assert (
+        torch.allclose(outputs[0, 0, :3, :3], expected_slice, atol=1e-4)
+        if "ade" in checkpoint_url
+        else torch.allclose(outputs[0, :3, :3], expected_slice)
+    )
+
+    Path(pytorch_dump_folder_path).mkdir(exist_ok=True)
+    print(f"Saving model to {pytorch_dump_folder_path}")
+    model.save_pretrained(pytorch_dump_folder_path)
+    print(f"Saving feature extractor to {pytorch_dump_folder_path}")
+    feature_extractor.save_pretrained(pytorch_dump_folder_path)
+
+    if push_to_hub:
+        print("Pushing model to hub...")
+        model.push_to_hub(
+            repo_path_or_name=Path(pytorch_dump_folder_path, model_name),
+            organization="nielsr",
+            commit_message="Add model",
+            use_temp_dir=True,
+        )
+        feature_extractor.push_to_hub(
+            repo_path_or_name=Path(pytorch_dump_folder_path, model_name),
+            organization="nielsr",
+            commit_message="Add feature extractor",
+            use_temp_dir=True,
+        )
+
+
+if __name__ == "__main__":
+    parser = argparse.ArgumentParser()
+    # Required parameters
+    parser.add_argument(
+        "--checkpoint_url",
+        default="https://github.com/intel-isl/DPT/releases/download/1_0/dpt_large-midas-2f21e586.pt",
+        type=str,
+        help="URL of the original DPT checkpoint you'd like to convert.",
+    )
+    parser.add_argument(
+        "--pytorch_dump_folder_path",
+        default=None,
+        type=str,
+        required=True,
+        help="Path to the output PyTorch model directory.",
+    )
+    parser.add_argument(
+        "--push_to_hub",
+        action="store_true",
+    )
+    parser.add_argument(
+        "--model_name",
+        default="dpt-large",
+        type=str,
+        help="Name of the model, in case you're pushing to the hub.",
+    )
+
+    args = parser.parse_args()
+    convert_dpt_checkpoint(args.checkpoint_url, args.pytorch_dump_folder_path, args.push_to_hub, args.model_name)

src/transformers/models/dpt/feature_extraction_dpt.py

+# coding=utf-8
+# Copyright 2021 The HuggingFace Inc. team. All rights reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+"""Feature extractor class for DPT."""
+
+from typing import Optional, Union
+
+import numpy as np
+from PIL import Image
+
+from ...feature_extraction_utils import BatchFeature, FeatureExtractionMixin
+from ...file_utils import TensorType
+from ...image_utils import (
+    IMAGENET_STANDARD_MEAN,
+    IMAGENET_STANDARD_STD,
+    ImageFeatureExtractionMixin,
+    ImageInput,
+    is_torch_tensor,
+)
+from ...utils import logging
+
+
+logger = logging.get_logger(__name__)
+
+
+class DPTFeatureExtractor(FeatureExtractionMixin, ImageFeatureExtractionMixin):
+    r"""
+    Constructs a DPT feature extractor.
+
+    This feature extractor inherits from [`FeatureExtractionMixin`] which contains most of the main methods. Users
+    should refer to this superclass for more information regarding those methods.
+
+    Args:
+        do_resize (`bool`, *optional*, defaults to `True`):
+            Whether to resize the input to a certain `size`.
+        size ('int' or `Tuple(int)`, *optional*, defaults to 384):
+            Resize the input to the given size. If a tuple is provided, it should be (width, height). If only an
+            integer is provided, then the input will be resized to (size, size). Only has an effect if `do_resize` is
+            set to `True`.
+        ensure_multiple_of (`int`, *optional*, defaults to 1):
+            Ensure that the input is resized to a multiple of this value. Only has an effect if `do_resize` is set to
+            `True`.
+        keep_aspect_ratio (`bool`, *optional*, defaults to `False`):
+            Whether to keep the aspect ratio of the input. Only has an effect if `do_resize` is set to `True`.
+        resample (`int`, *optional*, defaults to `PIL.Image.BILINEAR`):
+            An optional resampling filter. This can be one of `PIL.Image.NEAREST`, `PIL.Image.BOX`,
+            `PIL.Image.BILINEAR`, `PIL.Image.HAMMING`, `PIL.Image.BICUBIC` or `PIL.Image.LANCZOS`. Only has an effect
+            if `do_resize` is set to `True`.
+        do_normalize (`bool`, *optional*, defaults to `True`):
+            Whether or not to normalize the input with mean and standard deviation.
+        image_mean (`List[int]`, defaults to `[0.5, 0.5, 0.5]`):
+            The sequence of means for each channel, to be used when normalizing images.
+        image_std (`List[int]`, defaults to `[0.5, 0.5, 0.5]`):
+            The sequence of standard deviations for each channel, to be used when normalizing images.
+    """
+
+    model_input_names = ["pixel_values"]
+
+    def __init__(
+        self,
+        do_resize=True,
+        size=384,
+        keep_aspect_ratio=False,
+        ensure_multiple_of=1,
+        resample=Image.BILINEAR,
+        do_normalize=True,
+        image_mean=None,
+        image_std=None,
+        **kwargs
+    ):
+        super().__init__(**kwargs)
+        self.do_resize = do_resize
+        self.size = size
+        self.keep_aspect_ratio = keep_aspect_ratio
+        self.ensure_multiple_of = ensure_multiple_of
+        self.resample = resample
+        self.do_normalize = do_normalize
+        self.image_mean = image_mean if image_mean is not None else IMAGENET_STANDARD_MEAN
+        self.image_std = image_std if image_std is not None else IMAGENET_STANDARD_STD
+
+    def constrain_to_multiple_of(self, size, min_val=0, max_val=None):
+        y = (np.round(size / self.ensure_multiple_of) * self.ensure_multiple_of).astype(int)
+
+        if max_val is not None and y > max_val:
+            y = (np.floor(size / self.ensure_multiple_of) * self.ensure_multiple_of).astype(int)
+
+        if y < min_val:
+            y = (np.ceil(size / self.ensure_multiple_of) * self.ensure_multiple_of).astype(int)
+
+        return y
+
+    def update_size(self, image):
+        image = self.to_pil_image(image)
+        width, height = image.size
+
+        size = self.size
+
+        if isinstance(size, list):
+            size = tuple(size)
+
+        if isinstance(size, int) or len(size) == 1:
+            size = (size, size)
+
+        # determine new width and height
+        scale_width = size[0] / width
+        scale_height = size[1] / height
+
+        if self.keep_aspect_ratio:
+            # scale as least as possbile
+            if abs(1 - scale_width) < abs(1 - scale_height):
+                # fit width
+                scale_height = scale_width
+            else:
+                # fit height
+                scale_width = scale_height
+        else:
+            new_width = self.constrain_to_multiple_of(scale_width * width)
+            new_height = self.constrain_to_multiple_of(scale_height * height)
+
+        return (new_width, new_height)
+
+    def __call__(
+        self, images: ImageInput, return_tensors: Optional[Union[str, TensorType]] = None, **kwargs
+    ) -> BatchFeature:
+        """
+        Main method to prepare for the model one or several image(s).
+
+        <Tip warning={true}>
+
+        NumPy arrays and PyTorch tensors are converted to PIL images when resizing, so the most efficient is to pass
+        PIL images.
+
+        </Tip>
+
+        Args:
+            images (`PIL.Image.Image`, `np.ndarray`, `torch.Tensor`, `List[PIL.Image.Image]`, `List[np.ndarray]`, `List[torch.Tensor]`):
+                The image or batch of images to be prepared. Each image can be a PIL image, NumPy array or PyTorch
+                tensor. In case of a NumPy array/PyTorch tensor, each image should be of shape (C, H, W), where C is a
+                number of channels, H and W are image height and width.
+
+            return_tensors (`str` or [`~file_utils.TensorType`], *optional*, defaults to `'np'`):
+                If set, will return tensors of a particular framework. Acceptable values are:
+
+                - `'tf'`: Return TensorFlow `tf.constant` objects.
+                - `'pt'`: Return PyTorch `torch.Tensor` objects.
+                - `'np'`: Return NumPy `np.ndarray` objects.
+                - `'jax'`: Return JAX `jnp.ndarray` objects.
+
+        Returns:
+            [`BatchFeature`]: A [`BatchFeature`] with the following fields:
+
+            - **pixel_values** -- Pixel values to be fed to a model, of shape (batch_size, num_channels, height,
+              width).
+        """
+        # Input type checking for clearer error
+        valid_images = False
+
+        # Check that images has a valid type
+        if isinstance(images, (Image.Image, np.ndarray)) or is_torch_tensor(images):
+            valid_images = True
+        elif isinstance(images, (list, tuple)):
+            if len(images) == 0 or isinstance(images[0], (Image.Image, np.ndarray)) or is_torch_tensor(images[0]):
+                valid_images = True
+
+        if not valid_images:
+            raise ValueError(
+                "Images must of type `PIL.Image.Image`, `np.ndarray` or `torch.Tensor` (single example), "
+                "`List[PIL.Image.Image]`, `List[np.ndarray]` or `List[torch.Tensor]` (batch of examples)."
+            )
+
+        is_batched = bool(
+            isinstance(images, (list, tuple))
+            and (isinstance(images[0], (Image.Image, np.ndarray)) or is_torch_tensor(images[0]))
+        )
+
+        if not is_batched:
+            images = [images]
+
+        # transformations (resizing + normalization)
+        if self.do_resize and self.size is not None:
+            for idx, image in enumerate(images):
+                size = self.update_size(image)
+                images[idx] = self.resize(image, size=size, resample=self.resample)
+        if self.do_normalize:
+            images = [self.normalize(image=image, mean=self.image_mean, std=self.image_std) for image in images]
+
+        # return as BatchFeature
+        data = {"pixel_values": images}
+        encoded_inputs = BatchFeature(data=data, tensor_type=return_tensors)
+
+        return encoded_inputs

src/transformers/models/dpt/modeling_dpt.py

+# coding=utf-8
+# Copyright 2022 Intel Labs, OpenMMLab and The HuggingFace Inc. team. All rights reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+""" PyTorch DPT (Dense Prediction Transformers) model.
+
+This implementation is heavily inspired by OpenMMLab's implementation, found here:
+https://github.com/open-mmlab/mmsegmentation/blob/master/mmseg/models/decode_heads/dpt_head.py.
+
+"""
+
+
+import collections.abc
+import math
+from typing import List, Optional, Set, Tuple, Union
+
+import torch
+import torch.utils.checkpoint
+from torch import nn
+from torch.nn import CrossEntropyLoss
+
+from ...activations import ACT2FN
+from ...file_utils import (
+    add_code_sample_docstrings,
+    add_start_docstrings,
+    add_start_docstrings_to_model_forward,
+    replace_return_docstrings,
+)
+from ...modeling_outputs import (
+    BaseModelOutput,
+    BaseModelOutputWithPooling,
+    DepthEstimatorOutput,
+    SemanticSegmenterOutput,
+)
+from ...modeling_utils import PreTrainedModel, find_pruneable_heads_and_indices, prune_linear_layer
+from ...utils import logging
+from .configuration_dpt import DPTConfig
+
+
+logger = logging.get_logger(__name__)
+
+# General docstring
+_CONFIG_FOR_DOC = "DPTConfig"
+_FEAT_EXTRACTOR_FOR_DOC = "DPTFeatureExtractor"
+
+# Base docstring
+_CHECKPOINT_FOR_DOC = "Intel/dpt-large"
+_EXPECTED_OUTPUT_SHAPE = [1, 577, 1024]
+
+
+DPT_PRETRAINED_MODEL_ARCHIVE_LIST = [
+    "Intel/dpt-large",
+    # See all DPT models at https://huggingface.co/models?filter=dpt
+]
+
+
+# Copied from transformers.models.vit.modeling_vit.to_2tuple
+def to_2tuple(x):
+    if isinstance(x, collections.abc.Iterable):
+        return x
+    return (x, x)
+
+
+class DPTViTEmbeddings(nn.Module):
+    """
+    Construct the CLS token, position and patch embeddings.
+
+    """
+
+    def __init__(self, config):
+        super().__init__()
+
+        self.cls_token = nn.Parameter(torch.zeros(1, 1, config.hidden_size))
+        self.patch_embeddings = DPTViTPatchEmbeddings(
+            image_size=config.image_size,
+            patch_size=config.patch_size,
+            num_channels=config.num_channels,
+            embed_dim=config.hidden_size,
+        )
+        num_patches = self.patch_embeddings.num_patches
+        self.position_embeddings = nn.Parameter(torch.zeros(1, num_patches + 1, config.hidden_size))
+        self.dropout = nn.Dropout(config.hidden_dropout_prob)
+        self.config = config
+
+    def _resize_pos_embed(self, posemb, grid_size_height, grid_size_width, start_index=1):
+        posemb_tok = posemb[:, :start_index]
+        posemb_grid = posemb[0, start_index:]
+
+        old_grid_size = int(math.sqrt(len(posemb_grid)))
+
+        posemb_grid = posemb_grid.reshape(1, old_grid_size, old_grid_size, -1).permute(0, 3, 1, 2)
+        posemb_grid = nn.functional.interpolate(posemb_grid, size=(grid_size_height, grid_size_width), mode="bilinear")
+        posemb_grid = posemb_grid.permute(0, 2, 3, 1).reshape(1, grid_size_height * grid_size_width, -1)
+
+        posemb = torch.cat([posemb_tok, posemb_grid], dim=1)
+
+        return posemb
+
+    def forward(self, pixel_values):
+        batch_size, num_channels, height, width = pixel_values.shape
+
+        # possibly interpolate position encodings to handle varying image sizes
+        patch_size = self.config.patch_size
+        position_embeddings = self._resize_pos_embed(
+            self.position_embeddings, height // patch_size, width // patch_size
+        )
+
+        embeddings = self.patch_embeddings(pixel_values)
+
+        batch_size, seq_len, _ = embeddings.size()
+
+        # add the [CLS] token to the embedded patch tokens
+        cls_tokens = self.cls_token.expand(batch_size, -1, -1)
+        embeddings = torch.cat((cls_tokens, embeddings), dim=1)
+
+        # add positional encoding to each token
+        embeddings = embeddings + position_embeddings
+
+        embeddings = self.dropout(embeddings)
+
+        return embeddings
+
+
+class DPTViTPatchEmbeddings(nn.Module):
+    """
+    Image to Patch Embedding.
+
+    """
+
+    def __init__(self, image_size=224, patch_size=16, num_channels=3, embed_dim=768):
+        super().__init__()
+        image_size = to_2tuple(image_size)
+        patch_size = to_2tuple(patch_size)
+        num_patches = (image_size[1] // patch_size[1]) * (image_size[0] // patch_size[0])
+        self.image_size = image_size
+        self.patch_size = patch_size
+        self.num_patches = num_patches
+
+        self.projection = nn.Conv2d(num_channels, embed_dim, kernel_size=patch_size, stride=patch_size)
+
+    def forward(self, pixel_values):
+        batch_size, num_channels, height, width = pixel_values.shape
+        embeddings = self.projection(pixel_values).flatten(2).transpose(1, 2)
+        return embeddings
+
+
+# Copied from transformers.models.vit.modeling_vit.ViTSelfAttention with ViT->DPT
+class DPTViTSelfAttention(nn.Module):
+    def __init__(self, config: DPTConfig) -> None:
+        super().__init__()
+        if config.hidden_size % config.num_attention_heads != 0 and not hasattr(config, "embedding_size"):
+            raise ValueError(
+                f"The hidden size {config.hidden_size,} is not a multiple of the number of attention "
+                f"heads {config.num_attention_heads}."
+            )
+
+        self.num_attention_heads = config.num_attention_heads
+        self.attention_head_size = int(config.hidden_size / config.num_attention_heads)
+        self.all_head_size = self.num_attention_heads * self.attention_head_size
+
+        self.query = nn.Linear(config.hidden_size, self.all_head_size, bias=config.qkv_bias)
+        self.key = nn.Linear(config.hidden_size, self.all_head_size, bias=config.qkv_bias)
+        self.value = nn.Linear(config.hidden_size, self.all_head_size, bias=config.qkv_bias)
+
+        self.dropout = nn.Dropout(config.attention_probs_dropout_prob)
+
+    def transpose_for_scores(self, x: torch.Tensor) -> torch.Tensor:
+        new_x_shape = x.size()[:-1] + (self.num_attention_heads, self.attention_head_size)
+        x = x.view(*new_x_shape)
+        return x.permute(0, 2, 1, 3)
+
+    def forward(
+        self, hidden_states, head_mask: Optional[torch.Tensor] = None, output_attentions: bool = False
+    ) -> Union[Tuple[torch.Tensor, torch.Tensor], Tuple[torch.Tensor]]:
+        mixed_query_layer = self.query(hidden_states)
+
+        key_layer = self.transpose_for_scores(self.key(hidden_states))
+        value_layer = self.transpose_for_scores(self.value(hidden_states))
+        query_layer = self.transpose_for_scores(mixed_query_layer)
+
+        # Take the dot product between "query" and "key" to get the raw attention scores.
+        attention_scores = torch.matmul(query_layer, key_layer.transpose(-1, -2))
+
+        attention_scores = attention_scores / math.sqrt(self.attention_head_size)
+
+        # Normalize the attention scores to probabilities.
+        attention_probs = nn.functional.softmax(attention_scores, dim=-1)
+
+        # This is actually dropping out entire tokens to attend to, which might
+        # seem a bit unusual, but is taken from the original Transformer paper.
+        attention_probs = self.dropout(attention_probs)
+
+        # Mask heads if we want to
+        if head_mask is not None:
+            attention_probs = attention_probs * head_mask
+
+        context_layer = torch.matmul(attention_probs, value_layer)
+
+        context_layer = context_layer.permute(0, 2, 1, 3).contiguous()
+        new_context_layer_shape = context_layer.size()[:-2] + (self.all_head_size,)
+        context_layer = context_layer.view(*new_context_layer_shape)
+
+        outputs = (context_layer, attention_probs) if output_attentions else (context_layer,)
+
+        return outputs
+
+
+# Copied from transformers.models.vit.modeling_vit.ViTSelfOutput with ViT->DPT
+class DPTViTSelfOutput(nn.Module):
+    """
+    The residual connection is defined in DPTLayer instead of here (as is the case with other models), due to the
+    layernorm applied before each block.
+    """
+
+    def __init__(self, config: DPTConfig) -> None:
+        super().__init__()
+        self.dense = nn.Linear(config.hidden_size, config.hidden_size)
+        self.dropout = nn.Dropout(config.hidden_dropout_prob)
+
+    def forward(self, hidden_states: torch.Tensor, input_tensor: torch.Tensor) -> torch.Tensor:
+
+        hidden_states = self.dense(hidden_states)
+        hidden_states = self.dropout(hidden_states)
+
+        return hidden_states
+
+
+class DPTViTAttention(nn.Module):
+    def __init__(self, config: DPTConfig) -> None:
+        super().__init__()
+        self.attention = DPTViTSelfAttention(config)
+        self.output = DPTViTSelfOutput(config)
+        self.pruned_heads = set()
+
+    # Copied from transformers.models.vit.modeling_vit.ViTAttention.prune_heads
+    def prune_heads(self, heads: Set[int]) -> None:
+        if len(heads) == 0:
+            return
+        heads, index = find_pruneable_heads_and_indices(
+            heads, self.attention.num_attention_heads, self.attention.attention_head_size, self.pruned_heads
+        )
+
+        # Prune linear layers
+        self.attention.query = prune_linear_layer(self.attention.query, index)
+        self.attention.key = prune_linear_layer(self.attention.key, index)
+        self.attention.value = prune_linear_layer(self.attention.value, index)
+        self.output.dense = prune_linear_layer(self.output.dense, index, dim=1)
+
+        # Update hyper params and store pruned heads
+        self.attention.num_attention_heads = self.attention.num_attention_heads - len(heads)
+        self.attention.all_head_size = self.attention.attention_head_size * self.attention.num_attention_heads
+        self.pruned_heads = self.pruned_heads.union(heads)
+
+    # Copied from transformers.models.vit.modeling_vit.ViTAttention.forward
+    def forward(
+        self,
+        hidden_states: torch.Tensor,
+        head_mask: Optional[torch.Tensor] = None,
+        output_attentions: bool = False,
+    ) -> Union[Tuple[torch.Tensor, torch.Tensor], Tuple[torch.Tensor]]:
+        self_outputs = self.attention(hidden_states, head_mask, output_attentions)
+
+        attention_output = self.output(self_outputs[0], hidden_states)
+
+        outputs = (attention_output,) + self_outputs[1:]  # add attentions if we output them
+        return outputs
+
+
+# Copied from transformers.models.vit.modeling_vit.ViTIntermediate with ViT->DPT
+class DPTViTIntermediate(nn.Module):
+    def __init__(self, config: DPTConfig) -> None:
+        super().__init__()
+        self.dense = nn.Linear(config.hidden_size, config.intermediate_size)
+        if isinstance(config.hidden_act, str):
+            self.intermediate_act_fn = ACT2FN[config.hidden_act]
+        else:
+            self.intermediate_act_fn = config.hidden_act
+
+    def forward(self, hidden_states: torch.Tensor) -> torch.Tensor:
+
+        hidden_states = self.dense(hidden_states)
+        hidden_states = self.intermediate_act_fn(hidden_states)
+
+        return hidden_states
+
+
+# Copied from transformers.models.vit.modeling_vit.ViTOutput with ViT->DPT
+class DPTViTOutput(nn.Module):
+    def __init__(self, config: DPTConfig) -> None:
+        super().__init__()
+        self.dense = nn.Linear(config.intermediate_size, config.hidden_size)
+        self.dropout = nn.Dropout(config.hidden_dropout_prob)
+
+    def forward(self, hidden_states: torch.Tensor, input_tensor: torch.Tensor) -> torch.Tensor:
+        hidden_states = self.dense(hidden_states)
+        hidden_states = self.dropout(hidden_states)
+
+        hidden_states = hidden_states + input_tensor
+
+        return hidden_states
+
+
+# copied from transformers.models.vit.modeling_vit.ViTLayer with ViTConfig->DPTConfig, ViTAttention->DPTViTAttention, ViTIntermediate->DPTViTIntermediate, ViTOutput->DPTViTOutput
+class DPTViTLayer(nn.Module):
+    """This corresponds to the Block class in the timm implementation."""
+
+    def __init__(self, config: DPTConfig) -> None:
+        super().__init__()
+        self.chunk_size_feed_forward = config.chunk_size_feed_forward
+        self.seq_len_dim = 1
+        self.attention = DPTViTAttention(config)
+        self.intermediate = DPTViTIntermediate(config)
+        self.output = DPTViTOutput(config)
+        self.layernorm_before = nn.LayerNorm(config.hidden_size, eps=config.layer_norm_eps)
+        self.layernorm_after = nn.LayerNorm(config.hidden_size, eps=config.layer_norm_eps)
+
+    def forward(
+        self,
+        hidden_states: torch.Tensor,
+        head_mask: Optional[torch.Tensor] = None,
+        output_attentions: bool = False,
+    ) -> Union[Tuple[torch.Tensor, torch.Tensor], Tuple[torch.Tensor]]:
+        self_attention_outputs = self.attention(
+            self.layernorm_before(hidden_states),  # in ViT, layernorm is applied before self-attention
+            head_mask,
+            output_attentions=output_attentions,
+        )
+        attention_output = self_attention_outputs[0]
+        outputs = self_attention_outputs[1:]  # add self attentions if we output attention weights
+
+        # first residual connection
+        hidden_states = attention_output + hidden_states
+
+        # in ViT, layernorm is also applied after self-attention
+        layer_output = self.layernorm_after(hidden_states)
+        layer_output = self.intermediate(layer_output)
+
+        # second residual connection is done here
+        layer_output = self.output(layer_output, hidden_states)
+
+        outputs = (layer_output,) + outputs
+
+        return outputs
+
+
+# copied from transformers.models.vit.modeling_vit.ViTEncoder with ViTConfig -> DPTConfig, ViTLayer->DPTViTLayer
+class DPTViTEncoder(nn.Module):
+    def __init__(self, config: DPTConfig) -> None:
+        super().__init__()
+        self.config = config
+        self.layer = nn.ModuleList([DPTViTLayer(config) for _ in range(config.num_hidden_layers)])
+        self.gradient_checkpointing = False
+
+    def forward(
+        self,
+        hidden_states: torch.Tensor,
+        head_mask: Optional[torch.Tensor] = None,
+        output_attentions: bool = False,
+        output_hidden_states: bool = False,
+        return_dict: bool = True,
+    ) -> Union[tuple, BaseModelOutput]:
+        all_hidden_states = () if output_hidden_states else None
+        all_self_attentions = () if output_attentions else None
+
+        for i, layer_module in enumerate(self.layer):
+            if output_hidden_states:
+                all_hidden_states = all_hidden_states + (hidden_states,)
+
+            layer_head_mask = head_mask[i] if head_mask is not None else None
+
+            if self.gradient_checkpointing and self.training:
+
+                def create_custom_forward(module):
+                    def custom_forward(*inputs):
+                        return module(*inputs, output_attentions)
+
+                    return custom_forward
+
+                layer_outputs = torch.utils.checkpoint.checkpoint(
+                    create_custom_forward(layer_module),
+                    hidden_states,
+                    layer_head_mask,
+                )
+            else:
+                layer_outputs = layer_module(hidden_states, layer_head_mask, output_attentions)
+
+            hidden_states = layer_outputs[0]
+
+            if output_attentions:
+                all_self_attentions = all_self_attentions + (layer_outputs[1],)
+
+        if output_hidden_states:
+            all_hidden_states = all_hidden_states + (hidden_states,)
+
+        if not return_dict:
+            return tuple(v for v in [hidden_states, all_hidden_states, all_self_attentions] if v is not None)
+        return BaseModelOutput(
+            last_hidden_state=hidden_states,
+            hidden_states=all_hidden_states,
+            attentions=all_self_attentions,
+        )
+
+
+class DPTReassembleStage(nn.Module):
+    """
+    This class reassembles the hidden states of the backbone into image-like feature representations at various
+    resolutions.
+
+    This happens in 3 stages:
+    1. Map the N + 1 tokens to a set of N tokens, by taking into account the readout ([CLS]) token according to
+       `config.readout_type`.
+    2. Project the channel dimension of the hidden states according to `config.neck_hidden_sizes`.
+    3. Resizing the spatial dimensions (height, width).
+
+    Args:
+        config (`[DPTConfig]`):
+            Model configuration class defining the model architecture.
+    """
+
+    def __init__(self, config):
+        super().__init__()
+
+        self.config = config
+        self.layers = nn.ModuleList()
+        for i, factor in zip(range(len(config.neck_hidden_sizes)), config.reassemble_factors):
+            self.layers.append(DPTReassembleLayer(config, channels=config.neck_hidden_sizes[i], factor=factor))
+
+        if config.readout_type == "project":
+            self.readout_projects = nn.ModuleList()
+            for _ in range(len(config.neck_hidden_sizes)):
+                self.readout_projects.append(
+                    nn.Sequential(nn.Linear(2 * config.hidden_size, config.hidden_size), ACT2FN[config.hidden_act])
+                )
+
+    def forward(self, hidden_states: List[torch.Tensor]) -> List[torch.Tensor]:
+        """
+        Args:
+            hidden_states (`List[torch.FloatTensor]`, each of shape `(batch_size, sequence_length + 1, hidden_size)`):
+                List of hidden states from the backbone.
+        """
+        out = []
+
+        for i, hidden_state in enumerate(hidden_states):
+            # reshape to (B, C, H, W)
+            hidden_state, cls_token = hidden_state[:, 1:], hidden_state[:, 0]
+            batch_size, sequence_length, num_channels = hidden_state.shape
+            size = int(math.sqrt(sequence_length))
+            hidden_state = hidden_state.reshape(batch_size, size, size, num_channels)
+            hidden_state = hidden_state.permute(0, 3, 1, 2).contiguous()
+
+            feature_shape = hidden_state.shape
+            if self.config.readout_type == "project":
+                # reshape to (B, H*W, C)
+                hidden_state = hidden_state.flatten(2).permute((0, 2, 1))
+                readout = cls_token.unsqueeze(1).expand_as(hidden_state)
+                # concatenate the readout token to the hidden states and project
+                hidden_state = self.readout_projects[i](torch.cat((hidden_state, readout), -1))
+                # reshape back to (B, C, H, W)
+                hidden_state = hidden_state.permute(0, 2, 1).reshape(feature_shape)
+            elif self.config.readout_type == "add":
+                hidden_state = hidden_state.flatten(2) + cls_token.unsqueeze(-1)
+                hidden_state = hidden_state.reshape(feature_shape)
+            hidden_state = self.layers[i](hidden_state)
+            out.append(hidden_state)
+
+        return out
+
+
+class DPTReassembleLayer(nn.Module):
+    def __init__(self, config, channels, factor):
+        super().__init__()
+        # projection
+        self.projection = nn.Conv2d(in_channels=config.hidden_size, out_channels=channels, kernel_size=1)
+
+        # up/down sampling depending on factor
+        if factor > 1:
+            self.resize = nn.ConvTranspose2d(channels, channels, kernel_size=factor, stride=factor, padding=0)
+        elif factor == 1:
+            self.resize = nn.Identity()
+        elif factor < 1:
+            # so should downsample
+            self.resize = nn.Conv2d(channels, channels, kernel_size=3, stride=int(1 / factor), padding=1)
+
+    def forward(self, hidden_state):
+        hidden_state = self.projection(hidden_state)
+        hidden_state = self.resize(hidden_state)
+        return hidden_state
+
+
+class DPTFeatureFusionStage(nn.Module):
+    def __init__(self, config):
+        super().__init__()
+        self.layers = nn.ModuleList()
+        for _ in range(len(config.neck_hidden_sizes)):
+            self.layers.append(DPTFeatureFusionLayer(config))
+
+    def forward(self, hidden_states):
+        # reversing the hidden_states, we start from the last
+        hidden_states = hidden_states[::-1]
+
+        fused_hidden_states = []
+        # first layer only uses the last hidden_state
+        fused_hidden_state = self.layers[0](hidden_states[0])
+        fused_hidden_states.append(fused_hidden_state)
+        # looping from the last layer to the second
+        for hidden_state, layer in zip(hidden_states[1:], self.layers[1:]):
+            fused_hidden_state = layer(fused_hidden_state, hidden_state)
+            fused_hidden_states.append(fused_hidden_state)
+
+        return fused_hidden_states
+
+
+class DPTPreActResidualLayer(nn.Module):
+    """
+    ResidualConvUnit, pre-activate residual unit.
+
+    Args:
+        config (`[DPTConfig]`):
+            Model configuration class defining the model architecture.
+    """
+
+    def __init__(self, config):
+        super().__init__()
+
+        self.use_batch_norm = config.use_batch_norm_in_fusion_residual
+        self.activation1 = ACT2FN["relu"]
+        self.convolution1 = nn.Conv2d(
+            config.fusion_hidden_size,
+            config.fusion_hidden_size,
+            kernel_size=3,
+            stride=1,
+            padding=1,
+            bias=not self.use_batch_norm,
+        )
+
+        self.activation2 = ACT2FN["relu"]
+        self.convolution2 = nn.Conv2d(
+            config.fusion_hidden_size,
+            config.fusion_hidden_size,
+            kernel_size=3,
+            stride=1,
+            padding=1,
+            bias=not self.use_batch_norm,
+        )
+
+        if self.use_batch_norm:
+            self.batch_norm1 = nn.BatchNorm2d(config.fusion_hidden_size)
+            self.batch_norm2 = nn.BatchNorm2d(config.fusion_hidden_size)
+
+    def forward(self, hidden_state: torch.Tensor) -> torch.Tensor:
+        residual = hidden_state
+        hidden_state = self.activation1(hidden_state)
+
+        hidden_state = self.convolution1(hidden_state)
+
+        if self.use_batch_norm:
+            hidden_state = self.batch_norm1(hidden_state)
+
+        hidden_state = self.activation2(hidden_state)
+        hidden_state = self.convolution2(hidden_state)
+
+        if self.use_batch_norm:
+            hidden_state = self.batch_norm2(hidden_state)
+
+        return hidden_state + residual
+
+
+class DPTFeatureFusionLayer(nn.Module):
+    """Feature fusion layer, merges feature maps from different stages.
+
+    Args:
+        config (`[DPTConfig]`):
+            Model configuration class defining the model architecture.
+        align_corners (`bool`, *optional*, defaults to `True`):
+            The align_corner setting for bilinear upsample.
+    """
+
+    def __init__(self, config, align_corners=True):
+        super().__init__()
+
+        self.align_corners = align_corners
+
+        self.projection = nn.Conv2d(config.fusion_hidden_size, config.fusion_hidden_size, kernel_size=1, bias=True)
+
+        self.residual_layer1 = DPTPreActResidualLayer(config)
+        self.residual_layer2 = DPTPreActResidualLayer(config)
+
+    def forward(self, hidden_state, residual=None):
+        if residual is not None:
+            if hidden_state.shape != residual.shape:
+                residual = nn.functional.interpolate(
+                    residual, size=(hidden_state.shape[2], hidden_state.shape[3]), mode="bilinear", align_corners=False
+                )
+            hidden_state = hidden_state + self.residual_layer1(residual)
+
+        hidden_state = self.residual_layer2(hidden_state)
+        hidden_state = nn.functional.interpolate(
+            hidden_state, scale_factor=2, mode="bilinear", align_corners=self.align_corners
+        )
+        hidden_state = self.projection(hidden_state)
+
+        return hidden_state
+
+
+class DPTPreTrainedModel(PreTrainedModel):
+    """
+    An abstract class to handle weights initialization and a simple interface for downloading and loading pretrained
+    models.
+    """
+
+    config_class = DPTConfig
+    base_model_prefix = "dpt"
+    main_input_name = "pixel_values"
+    supports_gradient_checkpointing = True
+
+    def _init_weights(self, module):
+        """Initialize the weights"""
+        if isinstance(module, (nn.Linear, nn.Conv2d, nn.ConvTranspose2d)):
+            # Slightly different from the TF version which uses truncated_normal for initialization
+            # cf https://github.com/pytorch/pytorch/pull/5617
+            module.weight.data.normal_(mean=0.0, std=self.config.initializer_range)
+            if module.bias is not None:
+                module.bias.data.zero_()
+        elif isinstance(module, nn.LayerNorm):
+            module.bias.data.zero_()
+            module.weight.data.fill_(1.0)
+
+    def _set_gradient_checkpointing(self, module, value=False):
+        if isinstance(module, DPTViTEncoder):
+            module.gradient_checkpointing = value
+
+
+DPT_START_DOCSTRING = r"""
+    This model is a PyTorch [torch.nn.Module](https://pytorch.org/docs/stable/nn.html#torch.nn.Module) subclass. Use it
+    as a regular PyTorch Module and refer to the PyTorch documentation for all matter related to general usage and
+    behavior.
+
+    Parameters:
+        config ([`ViTConfig`]): Model configuration class with all the parameters of the model.
+            Initializing with a config file does not load the weights associated with the model, only the
+            configuration. Check out the [`~PreTrainedModel.from_pretrained`] method to load the model weights.
+"""
+
+DPT_INPUTS_DOCSTRING = r"""
+    Args:
+        pixel_values (`torch.FloatTensor` of shape `(batch_size, num_channels, height, width)`):
+            Pixel values. Pixel values can be obtained using [`ViTFeatureExtractor`]. See
+            [`ViTFeatureExtractor.__call__`] for details.
+
+        head_mask (`torch.FloatTensor` of shape `(num_heads,)` or `(num_layers, num_heads)`, *optional*):
+            Mask to nullify selected heads of the self-attention modules. Mask values selected in `[0, 1]`:
+
+            - 1 indicates the head is **not masked**,
+            - 0 indicates the head is **masked**.
+
+        output_attentions (`bool`, *optional*):
+            Whether or not to return the attentions tensors of all attention layers. See `attentions` under returned
+            tensors for more detail.
+        output_hidden_states (`bool`, *optional*):
+            Whether or not to return the hidden states of all layers. See `hidden_states` under returned tensors for
+            more detail.
+        return_dict (`bool`, *optional*):
+            Whether or not to return a [`~file_utils.ModelOutput`] instead of a plain tuple.
+"""
+
+
+@add_start_docstrings(
+    "The bare DPT Model transformer outputting raw hidden-states without any specific head on top.",
+    DPT_START_DOCSTRING,
+)
+class DPTModel(DPTPreTrainedModel):
+    def __init__(self, config, add_pooling_layer=True):
+        super().__init__(config)
+        self.config = config
+
+        # vit encoder
+        self.embeddings = DPTViTEmbeddings(config)
+        self.encoder = DPTViTEncoder(config)
+
+        self.layernorm = nn.LayerNorm(config.hidden_size, eps=config.layer_norm_eps)
+        self.pooler = DPTViTPooler(config) if add_pooling_layer else None
+
+        # Initialize weights and apply final processing
+        self.post_init()
+
+    def get_input_embeddings(self):
+        return self.embeddings.patch_embeddings
+
+    def _prune_heads(self, heads_to_prune):
+        """
+        Prunes heads of the model. heads_to_prune: dict of {layer_num: list of heads to prune in this layer} See base
+        class PreTrainedModel
+        """
+        for layer, heads in heads_to_prune.items():
+            self.encoder.layer[layer].attention.prune_heads(heads)
+
+    @add_start_docstrings_to_model_forward(DPT_INPUTS_DOCSTRING)
+    @add_code_sample_docstrings(
+        processor_class=_FEAT_EXTRACTOR_FOR_DOC,
+        checkpoint=_CHECKPOINT_FOR_DOC,
+        output_type=BaseModelOutputWithPooling,
+        config_class=_CONFIG_FOR_DOC,
+        modality="vision",
+        expected_output=_EXPECTED_OUTPUT_SHAPE,
+    )
+    def forward(
+        self,
+        pixel_values,
+        head_mask=None,
+        output_attentions=None,
+        output_hidden_states=None,
+        return_dict=None,
+    ):
+        output_attentions = output_attentions if output_attentions is not None else self.config.output_attentions
+        output_hidden_states = (
+            output_hidden_states if output_hidden_states is not None else self.config.output_hidden_states
+        )
+        return_dict = return_dict if return_dict is not None else self.config.use_return_dict
+
+        # Prepare head mask if needed
+        # 1.0 in head_mask indicate we keep the head
+        # attention_probs has shape bsz x n_heads x N x N
+        # input head_mask has shape [num_heads] or [num_hidden_layers x num_heads]
+        # and head_mask is converted to shape [num_hidden_layers x batch x num_heads x seq_length x seq_length]
+        head_mask = self.get_head_mask(head_mask, self.config.num_hidden_layers)
+
+        embedding_output = self.embeddings(pixel_values)
+
+        encoder_outputs = self.encoder(
+            embedding_output,
+            head_mask=head_mask,
+            output_attentions=output_attentions,
+            output_hidden_states=output_hidden_states,
+            return_dict=return_dict,
+        )
+
+        sequence_output = encoder_outputs[0]
+        sequence_output = self.layernorm(sequence_output)
+        pooled_output = self.pooler(sequence_output) if self.pooler is not None else None
+
+        if not return_dict:
+            return (sequence_output, pooled_output) + encoder_outputs[1:]
+
+        return BaseModelOutputWithPooling(
+            last_hidden_state=sequence_output,
+            pooler_output=pooled_output,
+            hidden_states=encoder_outputs.hidden_states,
+            attentions=encoder_outputs.attentions,
+        )
+
+
+# Copied from transformers.models.vit.modeling_vit.ViTPooler with ViT->DPT
+class DPTViTPooler(nn.Module):
+    def __init__(self, config: DPTConfig):
+        super().__init__()
+        self.dense = nn.Linear(config.hidden_size, config.hidden_size)
+        self.activation = nn.Tanh()
+
+    def forward(self, hidden_states):
+        # We "pool" the model by simply taking the hidden state corresponding
+        # to the first token.
+        first_token_tensor = hidden_states[:, 0]
+        pooled_output = self.dense(first_token_tensor)
+        pooled_output = self.activation(pooled_output)
+        return pooled_output
+
+
+class DPTNeck(nn.Module):
+    """
+    DPTNeck. A neck is a module that is normally used between the backbone and the head. It takes a list of tensors as
+    input and produces another list of tensors as output. For DPT, it includes 2 stages:
+
+    * DPTReassembleStage
+    * DPTFeatureFusionStage.
+
+    Args:
+        config (dict): config dict.
+    """
+
+    def __init__(self, config):
+        super().__init__()
+
+        self.config = config
+
+        # postprocessing
+        self.reassemble_stage = DPTReassembleStage(config)
+        self.convs = nn.ModuleList()
+        for channel in config.neck_hidden_sizes:
+            self.convs.append(nn.Conv2d(channel, config.fusion_hidden_size, kernel_size=3, padding=1, bias=False))
+
+        # fusion
+        self.fusion_stage = DPTFeatureFusionStage(config)
+
+    def forward(self, hidden_states: List[torch.Tensor]) -> List[torch.Tensor]:
+        if not isinstance(hidden_states, list):
+            raise ValueError("hidden_states should be a list of tensors")
+
+        if len(hidden_states) != len(self.config.neck_hidden_sizes):
+            raise ValueError("The number of hidden states should be equal to the number of neck hidden sizes.")
+
+        # postprocess hidden states
+        features = self.reassemble_stage(hidden_states)
+
+        features = [self.convs[i](feature) for i, feature in enumerate(features)]
+
+        # fusion blocks
+        output = self.fusion_stage(features)
+
+        return output
+
+
+class DPTDepthEstimationHead(nn.Module):
+    """
+    Output head head consisting of 3 convolutional layers. It progressively halves the feature dimension and upsamples
+    the predictions to the input resolution after the first convolutional layer (details can be found in the paper's
+    supplementary material).
+    """
+
+    def __init__(self, config):
+        super().__init__()
+
+        self.config = config
+
+        features = config.fusion_hidden_size
+        self.head = nn.Sequential(
+            nn.Conv2d(features, features // 2, kernel_size=3, stride=1, padding=1),
+            nn.Upsample(scale_factor=2, mode="bilinear", align_corners=True),
+            nn.Conv2d(features // 2, 32, kernel_size=3, stride=1, padding=1),
+            ACT2FN["relu"],
+            nn.Conv2d(32, 1, kernel_size=1, stride=1, padding=0),
+            ACT2FN["relu"],
+        )
+
+    def forward(self, hidden_states: List[torch.Tensor]) -> torch.Tensor:
+        # use last features
+        hidden_states = hidden_states[self.config.head_in_index]
+
+        predicted_depth = self.head(hidden_states)
+
+        predicted_depth = predicted_depth.squeeze(dim=1)
+
+        return predicted_depth
+
+
+@add_start_docstrings(
+    """
+    DPT Model with a depth estimation head on top (consisting of 3 convolutional layers) e.g. for KITTI, NYUv2.
+    """,
+    DPT_START_DOCSTRING,
+)
+class DPTForDepthEstimation(DPTPreTrainedModel):
+    def __init__(self, config):
+        super().__init__(config)
+
+        self.dpt = DPTModel(config, add_pooling_layer=False)
+
+        # Neck
+        self.neck = DPTNeck(config)
+
+        # Depth estimation head
+        self.head = DPTDepthEstimationHead(config)
+
+        # Initialize weights and apply final processing
+        self.post_init()
+
+    @add_start_docstrings_to_model_forward(DPT_INPUTS_DOCSTRING)
+    @replace_return_docstrings(output_type=DepthEstimatorOutput, config_class=_CONFIG_FOR_DOC)
+    def forward(
+        self,
+        pixel_values,
+        head_mask=None,
+        labels=None,
+        output_attentions=None,
+        output_hidden_states=None,
+        return_dict=None,
+    ):
+        r"""
+        labels (`torch.LongTensor` of shape `(batch_size, height, width)`, *optional*):
+            Ground truth depth estimation maps for computing the loss.
+
+        Returns:
+
+        Examples:
+        ```python
+        >>> from transformers import DPTFeatureExtractor, DPTForDepthEstimation
+        >>> import torch
+        >>> import numpy as np
+        >>> from PIL import Image
+        >>> import requests
+
+        >>> url = "http://images.cocodataset.org/val2017/000000039769.jpg"
+        >>> image = Image.open(requests.get(url, stream=True).raw)
+
+        >>> feature_extractor = DPTFeatureExtractor.from_pretrained("Intel/dpt-large")
+        >>> model = DPTForDepthEstimation.from_pretrained("Intel/dpt-large")
+
+        >>> # prepare image for the model
+        >>> inputs = feature_extractor(images=image, return_tensors="pt")
+
+        >>> with torch.no_grad():
+        ...     outputs = model(**inputs)
+        ...     predicted_depth = outputs.predicted_depth
+
+        >>> # interpolate to original size
+        >>> prediction = torch.nn.functional.interpolate(
+        ...     predicted_depth.unsqueeze(1),
+        ...     size=image.size[::-1],
+        ...     mode="bicubic",
+        ...     align_corners=False,
+        ... )
+
+        >>> # visualize the prediction
+        >>> output = prediction.squeeze().cpu().numpy()
+        >>> formatted = (output * 255 / np.max(output)).astype("uint8")
+        >>> depth = Image.fromarray(formatted)
+        ```"""
+        return_dict = return_dict if return_dict is not None else self.config.use_return_dict
+        output_hidden_states = (
+            output_hidden_states if output_hidden_states is not None else self.config.output_hidden_states
+        )
+
+        outputs = self.dpt(
+            pixel_values,
+            head_mask=head_mask,
+            output_attentions=output_attentions,
+            output_hidden_states=True,  # we need the intermediate hidden states
+            return_dict=return_dict,
+        )
+
+        hidden_states = outputs.hidden_states if return_dict else outputs[2]
+
+        # only keep certain features based on config.backbone_out_indices
+        # note that the hidden_states also include the initial embeddings
+        hidden_states = [
+            feature for idx, feature in enumerate(hidden_states[1:]) if idx in self.config.backbone_out_indices
+        ]
+
+        hidden_states = self.neck(hidden_states)
+
+        predicted_depth = self.head(hidden_states)
+
+        loss = None
+        if labels is not None:
+            raise NotImplementedError("Training is not implemented yet")
+
+        if not return_dict:
+            if output_hidden_states:
+                output = (predicted_depth,) + outputs[2:]
+            else:
+                output = (predicted_depth,) + outputs[3:]
+            return ((loss,) + output) if loss is not None else output
+
+        return DepthEstimatorOutput(
+            loss=loss,
+            predicted_depth=predicted_depth,
+            hidden_states=outputs.hidden_states if output_hidden_states else None,
+            attentions=outputs.attentions,
+        )
+
+
+class DPTSemanticSegmentationHead(nn.Module):
+    def __init__(self, config):
+        super().__init__()
+
+        self.config = config
+
+        features = config.fusion_hidden_size
+        self.head = nn.Sequential(
+            nn.Conv2d(features, features, kernel_size=3, padding=1, bias=False),
+            nn.BatchNorm2d(features),
+            ACT2FN["relu"],
+            nn.Dropout(config.semantic_classifier_dropout),
+            nn.Conv2d(features, config.num_labels, kernel_size=1),
+            nn.Upsample(scale_factor=2, mode="bilinear", align_corners=True),
+        )
+
+    def forward(self, hidden_states: List[torch.Tensor]) -> torch.Tensor:
+        # use last features
+        hidden_states = hidden_states[self.config.head_in_index]
+
+        logits = self.head(hidden_states)
+
+        return logits
+
+
+class DPTAuxiliaryHead(nn.Module):
+    def __init__(self, config):
+        super().__init__()
+
+        features = config.fusion_hidden_size
+        self.head = nn.Sequential(
+            nn.Conv2d(features, features, kernel_size=3, padding=1, bias=False),
+            nn.BatchNorm2d(features),
+            ACT2FN["relu"],
+            nn.Dropout(0.1, False),
+            nn.Conv2d(features, config.num_labels, kernel_size=1),
+        )
+
+    def forward(self, hidden_states):
+        logits = self.head(hidden_states)
+
+        return logits
+
+
+@add_start_docstrings(
+    """
+    DPT Model with a semantic segmentation head on top e.g. for ADE20k, CityScapes.
+    """,
+    DPT_START_DOCSTRING,
+)
+class DPTForSemanticSegmentation(DPTPreTrainedModel):
+    def __init__(self, config):
+        super().__init__(config)
+
+        self.dpt = DPTModel(config, add_pooling_layer=False)
+
+        # Neck
+        self.neck = DPTNeck(config)
+
+        # Segmentation head(s)
+        self.head = DPTSemanticSegmentationHead(config)
+        self.auxiliary_head = DPTAuxiliaryHead(config) if config.use_auxiliary_head else None
+
+        # Initialize weights and apply final processing
+        self.post_init()
+
+    @add_start_docstrings_to_model_forward(DPT_INPUTS_DOCSTRING)
+    @replace_return_docstrings(output_type=SemanticSegmenterOutput, config_class=_CONFIG_FOR_DOC)
+    def forward(
+        self,
+        pixel_values=None,
+        head_mask=None,
+        labels=None,
+        output_attentions=None,
+        output_hidden_states=None,
+        return_dict=None,
+    ):
+        r"""
+        labels (`torch.LongTensor` of shape `(batch_size, height, width)`, *optional*):
+            Ground truth semantic segmentation maps for computing the loss. Indices should be in `[0, ...,
+            config.num_labels - 1]`. If `config.num_labels > 1`, a classification loss is computed (Cross-Entropy).
+
+        Returns:
+
+        Examples:
+        ```python
+        >>> from transformers import DPTFeatureExtractor, DPTForSemanticSegmentation
+        >>> from PIL import Image
+        >>> import requests
+
+        >>> url = "http://images.cocodataset.org/val2017/000000039769.jpg"
+        >>> image = Image.open(requests.get(url, stream=True).raw)
+
+        >>> feature_extractor = DPTFeatureExtractor.from_pretrained("Intel/dpt-large-ade")
+        >>> model = DPTForSemanticSegmentation.from_pretrained("Intel/dpt-large-ade")
+
+        >>> inputs = feature_extractor(images=image, return_tensors="pt")
+
+        >>> outputs = model(**inputs)
+        >>> logits = outputs.logits
+        ```"""
+        return_dict = return_dict if return_dict is not None else self.config.use_return_dict
+        output_hidden_states = (
+            output_hidden_states if output_hidden_states is not None else self.config.output_hidden_states
+        )
+
+        outputs = self.dpt(
+            pixel_values,
+            head_mask=head_mask,
+            output_attentions=output_attentions,
+            output_hidden_states=True,  # we need the intermediate hidden states
+            return_dict=return_dict,
+        )
+
+        hidden_states = outputs.hidden_states if return_dict else outputs[2]
+
+        # only keep certain features based on config.backbone_out_indices
+        # note that the hidden_states also include the initial embeddings
+        hidden_states = [
+            feature for idx, feature in enumerate(hidden_states[1:]) if idx in self.config.backbone_out_indices
+        ]
+
+        hidden_states = self.neck(hidden_states)
+
+        logits = self.head(hidden_states)
+
+        auxiliary_logits = None
+        if self.auxiliary_head is not None:
+            auxiliary_logits = self.auxiliary_head(hidden_states[-1])
+
+        loss = None
+        if labels is not None:
+            if self.config.num_labels == 1:
+                raise ValueError("The number of labels should be greater than one")
+            else:
+                # upsample logits to the images' original size
+                upsampled_logits = nn.functional.interpolate(
+                    logits, size=labels.shape[-2:], mode="bilinear", align_corners=False
+                )
+                if auxiliary_logits is not None:
+                    upsampled_auxiliary_logits = nn.functional.interpolate(
+                        auxiliary_logits, size=labels.shape[-2:], mode="bilinear", align_corners=False
+                    )
+                # compute weighted loss
+                loss_fct = CrossEntropyLoss(ignore_index=self.config.semantic_loss_ignore_index)
+                main_loss = loss_fct(upsampled_logits, labels)
+                auxiliary_loss = loss_fct(upsampled_auxiliary_logits, labels)
+                loss = main_loss + self.config.auxiliary_loss_weight * auxiliary_loss
+
+        if not return_dict:
+            if output_hidden_states:
+                output = (logits,) + outputs[2:]
+            else:
+                output = (logits,) + outputs[3:]
+            return ((loss,) + output) if loss is not None else output
+
+        return SemanticSegmenterOutput(
+            loss=loss,
+            logits=logits,
+            hidden_states=outputs.hidden_states if output_hidden_states else None,
+            attentions=outputs.attentions,
+        )

src/transformers/utils/dummy_pt_objects.py

@@ -1604,6 +1604,37 @@ class DPRReader(metaclass=DummyObject):
         requires_backends(self, ["torch"])
 
 
+DPT_PRETRAINED_MODEL_ARCHIVE_LIST = None
+
+
+class DPTForDepthEstimation(metaclass=DummyObject):
+    _backends = ["torch"]
+
+    def __init__(self, *args, **kwargs):
+        requires_backends(self, ["torch"])
+
+
+class DPTForSemanticSegmentation(metaclass=DummyObject):
+    _backends = ["torch"]
+
+    def __init__(self, *args, **kwargs):
+        requires_backends(self, ["torch"])
+
+
+class DPTModel(metaclass=DummyObject):
+    _backends = ["torch"]
+
+    def __init__(self, *args, **kwargs):
+        requires_backends(self, ["torch"])
+
+
+class DPTPreTrainedModel(metaclass=DummyObject):
+    _backends = ["torch"]
+
+    def __init__(self, *args, **kwargs):
+        requires_backends(self, ["torch"])
+
+
 ELECTRA_PRETRAINED_MODEL_ARCHIVE_LIST = None
 
 

src/transformers/utils/dummy_vision_objects.py

@@ -52,6 +52,13 @@ class DetrFeatureExtractor(metaclass=DummyObject):
         requires_backends(self, ["vision"])
 
 
+class DPTFeatureExtractor(metaclass=DummyObject):
+    _backends = ["vision"]
+
+    def __init__(self, *args, **kwargs):
+        requires_backends(self, ["vision"])
+
+
 class GLPNFeatureExtractor(metaclass=DummyObject):
     _backends = ["vision"]
 

tests/dpt/test_feature_extraction_dpt.py

+# coding=utf-8
+# Copyright 2022 HuggingFace Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+
+import unittest
+
+import numpy as np
+
+from transformers.file_utils import is_torch_available, is_vision_available
+from transformers.testing_utils import require_torch, require_vision
+
+from ..test_feature_extraction_common import FeatureExtractionSavingTestMixin, prepare_image_inputs
+
+
+if is_torch_available():
+    import torch
+
+if is_vision_available():
+    from PIL import Image
+
+    from transformers import DPTFeatureExtractor
+
+
+class DPTFeatureExtractionTester(unittest.TestCase):
+    def __init__(
+        self,
+        parent,
+        batch_size=7,
+        num_channels=3,
+        image_size=18,
+        min_resolution=30,
+        max_resolution=400,
+        do_resize=True,
+        size=18,
+        do_normalize=True,
+        image_mean=[0.5, 0.5, 0.5],
+        image_std=[0.5, 0.5, 0.5],
+    ):
+        self.parent = parent
+        self.batch_size = batch_size
+        self.num_channels = num_channels
+        self.image_size = image_size
+        self.min_resolution = min_resolution
+        self.max_resolution = max_resolution
+        self.do_resize = do_resize
+        self.size = size
+        self.do_normalize = do_normalize
+        self.image_mean = image_mean
+        self.image_std = image_std
+
+    def prepare_feat_extract_dict(self):
+        return {
+            "image_mean": self.image_mean,
+            "image_std": self.image_std,
+            "do_normalize": self.do_normalize,
+            "do_resize": self.do_resize,
+            "size": self.size,
+        }
+
+
+@require_torch
+@require_vision
+class DPTFeatureExtractionTest(FeatureExtractionSavingTestMixin, unittest.TestCase):
+
+    feature_extraction_class = DPTFeatureExtractor if is_vision_available() else None
+
+    def setUp(self):
+        self.feature_extract_tester = DPTFeatureExtractionTester(self)
+
+    @property
+    def feat_extract_dict(self):
+        return self.feature_extract_tester.prepare_feat_extract_dict()
+
+    def test_feat_extract_properties(self):
+        feature_extractor = self.feature_extraction_class(**self.feat_extract_dict)
+        self.assertTrue(hasattr(feature_extractor, "image_mean"))
+        self.assertTrue(hasattr(feature_extractor, "image_std"))
+        self.assertTrue(hasattr(feature_extractor, "do_normalize"))
+        self.assertTrue(hasattr(feature_extractor, "do_resize"))
+        self.assertTrue(hasattr(feature_extractor, "size"))
+
+    def test_call_pil(self):
+        # Initialize feature_extractor
+        feature_extractor = self.feature_extraction_class(**self.feat_extract_dict)
+        # create random PIL images
+        image_inputs = prepare_image_inputs(self.feature_extract_tester, equal_resolution=False)
+        for image in image_inputs:
+            self.assertIsInstance(image, Image.Image)
+
+        # Test not batched input
+        encoded_images = feature_extractor(image_inputs[0], return_tensors="pt").pixel_values
+        self.assertEqual(
+            encoded_images.shape,
+            (
+                1,
+                self.feature_extract_tester.num_channels,
+                self.feature_extract_tester.size,
+                self.feature_extract_tester.size,
+            ),
+        )
+
+        # Test batched
+        encoded_images = feature_extractor(image_inputs, return_tensors="pt").pixel_values
+        self.assertEqual(
+            encoded_images.shape,
+            (
+                self.feature_extract_tester.batch_size,
+                self.feature_extract_tester.num_channels,
+                self.feature_extract_tester.size,
+                self.feature_extract_tester.size,
+            ),
+        )
+
+    def test_call_numpy(self):
+        # Initialize feature_extractor
+        feature_extractor = self.feature_extraction_class(**self.feat_extract_dict)
+        # create random numpy tensors
+        image_inputs = prepare_image_inputs(self.feature_extract_tester, equal_resolution=False, numpify=True)
+        for image in image_inputs:
+            self.assertIsInstance(image, np.ndarray)
+
+        # Test not batched input
+        encoded_images = feature_extractor(image_inputs[0], return_tensors="pt").pixel_values
+        self.assertEqual(
+            encoded_images.shape,
+            (
+                1,
+                self.feature_extract_tester.num_channels,
+                self.feature_extract_tester.size,
+                self.feature_extract_tester.size,
+            ),
+        )
+
+        # Test batched
+        encoded_images = feature_extractor(image_inputs, return_tensors="pt").pixel_values
+        self.assertEqual(
+            encoded_images.shape,
+            (
+                self.feature_extract_tester.batch_size,
+                self.feature_extract_tester.num_channels,
+                self.feature_extract_tester.size,
+                self.feature_extract_tester.size,
+            ),
+        )
+
+    def test_call_pytorch(self):
+        # Initialize feature_extractor
+        feature_extractor = self.feature_extraction_class(**self.feat_extract_dict)
+        # create random PyTorch tensors
+        image_inputs = prepare_image_inputs(self.feature_extract_tester, equal_resolution=False, torchify=True)
+        for image in image_inputs:
+            self.assertIsInstance(image, torch.Tensor)
+
+        # Test not batched input
+        encoded_images = feature_extractor(image_inputs[0], return_tensors="pt").pixel_values
+        self.assertEqual(
+            encoded_images.shape,
+            (
+                1,
+                self.feature_extract_tester.num_channels,
+                self.feature_extract_tester.size,
+                self.feature_extract_tester.size,
+            ),
+        )
+
+        # Test batched
+        encoded_images = feature_extractor(image_inputs, return_tensors="pt").pixel_values
+        self.assertEqual(
+            encoded_images.shape,
+            (
+                self.feature_extract_tester.batch_size,
+                self.feature_extract_tester.num_channels,
+                self.feature_extract_tester.size,
+                self.feature_extract_tester.size,
+            ),
+        )