Convert SlimSAM checkpoints (#28379)

* First commit

* Improve conversion script

* Convert more checkpoints

* Update src/transformers/models/sam/convert_sam_original_to_hf_format.py
Co-authored-by: Arthur <48595927+ArthurZucker@users.noreply.github.com>

* Rename file

* More updates

* Update docstring

* Update script

---------
Co-authored-by: Arthur <48595927+ArthurZucker@users.noreply.github.com>

src/transformers/models/sam/convert_sam_original_to_hf_format.py → src/transformers/models/sam/convert_sam_to_hf.py

@@ -14,6 +14,10 @@
 # limitations under the License.
 """
 Convert SAM checkpoints from the original repository.
+
+URL: https://github.com/facebookresearch/segment-anything.
+
+Also supports converting the SlimSAM checkpoints from https://github.com/czg1225/SlimSAM/tree/master.
 """
 import argparse
 import re
@@ -33,6 +37,47 @@ from transformers import (
 )
 
 
+def get_config(model_name):
+    if "slimsam-50" in model_name:
+        vision_config = SamVisionConfig(
+            hidden_size=384,
+            mlp_dim=1536,
+            num_hidden_layers=12,
+            num_attention_heads=12,
+            global_attn_indexes=[2, 5, 8, 11],
+        )
+    elif "slimsam-77" in model_name:
+        vision_config = SamVisionConfig(
+            hidden_size=168,
+            mlp_dim=696,
+            num_hidden_layers=12,
+            num_attention_heads=12,
+            global_attn_indexes=[2, 5, 8, 11],
+        )
+    elif "sam_vit_b" in model_name:
+        vision_config = SamVisionConfig()
+    elif "sam_vit_l" in model_name:
+        vision_config = SamVisionConfig(
+            hidden_size=1024,
+            num_hidden_layers=24,
+            num_attention_heads=16,
+            global_attn_indexes=[5, 11, 17, 23],
+        )
+    elif "sam_vit_h" in model_name:
+        vision_config = SamVisionConfig(
+            hidden_size=1280,
+            num_hidden_layers=32,
+            num_attention_heads=16,
+            global_attn_indexes=[7, 15, 23, 31],
+        )
+
+    config = SamConfig(
+        vision_config=vision_config,
+    )
+
+    return config
+
+
 KEYS_TO_MODIFY_MAPPING = {
     "iou_prediction_head.layers.0": "iou_prediction_head.proj_in",
     "iou_prediction_head.layers.1": "iou_prediction_head.layers.0",
@@ -88,63 +133,47 @@ def replace_keys(state_dict):
     return model_state_dict
 
 
-def convert_sam_checkpoint(model_name, pytorch_dump_folder, push_to_hub, model_hub_id="ybelkada/segment-anything"):
-    checkpoint_path = hf_hub_download(model_hub_id, f"checkpoints/{model_name}.pth")
-
-    if "sam_vit_b" in model_name:
-        config = SamConfig()
-    elif "sam_vit_l" in model_name:
-        vision_config = SamVisionConfig(
-            hidden_size=1024,
-            num_hidden_layers=24,
-            num_attention_heads=16,
-            global_attn_indexes=[5, 11, 17, 23],
-        )
-
-        config = SamConfig(
-            vision_config=vision_config,
-        )
-    elif "sam_vit_h" in model_name:
-        vision_config = SamVisionConfig(
-            hidden_size=1280,
-            num_hidden_layers=32,
-            num_attention_heads=16,
-            global_attn_indexes=[7, 15, 23, 31],
-        )
-
-        config = SamConfig(
-            vision_config=vision_config,
-        )
+def convert_sam_checkpoint(model_name, checkpoint_path, pytorch_dump_folder, push_to_hub):
+    config = get_config(model_name)
 
     state_dict = torch.load(checkpoint_path, map_location="cpu")
     state_dict = replace_keys(state_dict)
 
     image_processor = SamImageProcessor()
-
     processor = SamProcessor(image_processor=image_processor)
     hf_model = SamModel(config)
+    hf_model.eval()
+
+    device = "cuda" if torch.cuda.is_available() else "cpu"
 
     hf_model.load_state_dict(state_dict)
-    hf_model = hf_model.to("cuda")
+    hf_model = hf_model.to(device)
 
     img_url = "https://huggingface.co/ybelkada/segment-anything/resolve/main/assets/car.png"
     raw_image = Image.open(requests.get(img_url, stream=True).raw).convert("RGB")
 
-    input_points = [[[400, 650]]]
+    input_points = [[[500, 375]]]
     input_labels = [[1]]
 
-    inputs = processor(images=np.array(raw_image), return_tensors="pt").to("cuda")
+    inputs = processor(images=np.array(raw_image), return_tensors="pt").to(device)
 
     with torch.no_grad():
         output = hf_model(**inputs)
     scores = output.iou_scores.squeeze()
 
-    if model_name == "sam_vit_h_4b8939":
-        assert scores[-1].item() == 0.579890251159668
+    if model_name == "sam_vit_b_01ec64":
+        inputs = processor(
+            images=np.array(raw_image), input_points=input_points, input_labels=input_labels, return_tensors="pt"
+        ).to(device)
+
+        with torch.no_grad():
+            output = hf_model(**inputs)
+            scores = output.iou_scores.squeeze()
 
+    elif model_name == "sam_vit_h_4b8939":
         inputs = processor(
             images=np.array(raw_image), input_points=input_points, input_labels=input_labels, return_tensors="pt"
-        ).to("cuda")
+        ).to(device)
 
         with torch.no_grad():
             output = hf_model(**inputs)
@@ -154,7 +183,7 @@ def convert_sam_checkpoint(model_name, pytorch_dump_folder, push_to_hub, model_h
 
         input_boxes = ((75, 275, 1725, 850),)
 
-        inputs = processor(images=np.array(raw_image), input_boxes=input_boxes, return_tensors="pt").to("cuda")
+        inputs = processor(images=np.array(raw_image), input_boxes=input_boxes, return_tensors="pt").to(device)
 
         with torch.no_grad():
             output = hf_model(**inputs)
@@ -168,7 +197,7 @@ def convert_sam_checkpoint(model_name, pytorch_dump_folder, push_to_hub, model_h
 
         inputs = processor(
             images=np.array(raw_image), input_points=input_points, input_labels=input_labels, return_tensors="pt"
-        ).to("cuda")
+        ).to(device)
 
         with torch.no_grad():
             output = hf_model(**inputs)
@@ -176,16 +205,31 @@ def convert_sam_checkpoint(model_name, pytorch_dump_folder, push_to_hub, model_h
 
         assert scores[-1].item() == 0.9936047792434692
 
+    if pytorch_dump_folder is not None:
+        processor.save_pretrained(pytorch_dump_folder)
+        hf_model.save_pretrained(pytorch_dump_folder)
+
+    if push_to_hub:
+        repo_id = f"nielsr/{model_name}" if "slimsam" in model_name else f"meta/{model_name}"
+        processor.push_to_hub(repo_id)
+        hf_model.push_to_hub(repo_id)
+
 
 if __name__ == "__main__":
     parser = argparse.ArgumentParser()
-    choices = ["sam_vit_b_01ec64", "sam_vit_h_4b8939", "sam_vit_l_0b3195"]
+    choices = ["sam_vit_b_01ec64", "sam_vit_h_4b8939", "sam_vit_l_0b3195", "slimsam-50-uniform", "slimsam-77-uniform"]
     parser.add_argument(
         "--model_name",
         default="sam_vit_h_4b8939",
         choices=choices,
         type=str,
-        help="Path to hf config.json of model to convert",
+        help="Name of the original model to convert",
+    )
+    parser.add_argument(
+        "--checkpoint_path",
+        type=str,
+        required=False,
+        help="Path to the original checkpoint",
     )
     parser.add_argument("--pytorch_dump_folder_path", default=None, type=str, help="Path to the output PyTorch model.")
     parser.add_argument(
@@ -193,14 +237,14 @@ if __name__ == "__main__":
         action="store_true",
         help="Whether to push the model and processor to the hub after converting",
     )
-    parser.add_argument(
-        "--model_hub_id",
-        default="ybelkada/segment-anything",
-        choices=choices,
-        type=str,
-        help="Path to hf config.json of model to convert",
-    )
 
     args = parser.parse_args()
 
-    convert_sam_checkpoint(args.model_name, args.pytorch_dump_folder_path, args.push_to_hub, args.model_hub_id)
+    if "slimsam" in args.model_name:
+        checkpoint_path = args.checkpoint_path
+        if checkpoint_path is None:
+            raise ValueError("You need to provide a checkpoint path for SlimSAM models.")
+    else:
+        checkpoint_path = hf_hub_download("ybelkada/segment-anything", f"checkpoints/{args.model_name}.pth")
+
+    convert_sam_checkpoint(args.model_name, checkpoint_path, args.pytorch_dump_folder_path, args.push_to_hub)

utils/not_doctested.txt

@@ -784,7 +784,7 @@ src/transformers/models/rwkv/configuration_rwkv.py
 src/transformers/models/rwkv/convert_rwkv_checkpoint_to_hf.py
 src/transformers/models/rwkv/modeling_rwkv.py
 src/transformers/models/sam/configuration_sam.py
-src/transformers/models/sam/convert_sam_original_to_hf_format.py
+src/transformers/models/sam/convert_sam_to_hf.py
 src/transformers/models/sam/image_processing_sam.py
 src/transformers/models/sam/modeling_sam.py
 src/transformers/models/sam/modeling_tf_sam.py