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name: SAM2/fmt
on:
pull_request:
branches:
- main
jobs:
ufmt_check:
runs-on: ubuntu-latest
steps:
- name: Check formatting
uses: omnilib/ufmt@action-v1
with:
path: sam2 tools
version: "2.0.0b2"
python-version: "3.10"
black-version: "24.2.0"
usort-version: "1.0.2"
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.vscode/
.DS_Store
__pycache__/
*-checkpoint.ipynb
.venv
*.egg*
build/*
_C.*
outputs/*
checkpoints/*.pt
demo/backend/checkpoints/*.pt
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{}
\ No newline at end of file
CODE_OF_CONDUCT.md 0 → 100644
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# Code of Conduct
## Our Pledge
In the interest of fostering an open and welcoming environment, we as
contributors and maintainers pledge to make participation in our project and
our community a harassment-free experience for everyone, regardless of age, body
size, disability, ethnicity, sex characteristics, gender identity and expression,
level of experience, education, socio-economic status, nationality, personal
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## Our Standards
Examples of behavior that contributes to creating a positive environment
include:
* Using welcoming and inclusive language
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Examples of unacceptable behavior by participants include:
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advances
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## Our Responsibilities
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## Scope
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## Attribution
This Code of Conduct is adapted from the [Contributor Covenant][homepage], version 1.4,
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[homepage]: https://www.contributor-covenant.org
For answers to common questions about this code of conduct, see
https://www.contributor-covenant.org/faq
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# Contributing to segment-anything
We want to make contributing to this project as easy and transparent as
possible.
## Pull Requests
We actively welcome your pull requests.
1. Fork the repo and create your branch from `main`.
2. If you've added code that should be tested, add tests.
3. If you've changed APIs, update the documentation.
4. Ensure the test suite passes.
5. Make sure your code lints, using the `ufmt format` command. Linting requires `black==24.2.0`, `usort==1.0.2`, and `ufmt==2.0.0b2`, which can be installed via `pip install -e ".[dev]"`.
6. If you haven't already, complete the Contributor License Agreement ("CLA").
## Contributor License Agreement ("CLA")
In order to accept your pull request, we need you to submit a CLA. You only need
to do this once to work on any of Facebook's open source projects.
Complete your CLA here: <https://code.facebook.com/cla>
## Issues
We use GitHub issues to track public bugs. Please ensure your description is
clear and has sufficient instructions to be able to reproduce the issue.
Facebook has a [bounty program](https://www.facebook.com/whitehat/) for the safe
disclosure of security bugs. In those cases, please go through the process
outlined on that page and do not file a public issue.
## License
By contributing to segment-anything, you agree that your contributions will be licensed
under the LICENSE file in the root directory of this source tree.
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## Installation
### Requirements
- Linux with Python ≥ 3.10, PyTorch ≥ 2.5.1 and [torchvision](https://github.com/pytorch/vision/) that matches the PyTorch installation. Install them together at https://pytorch.org to ensure this.
* Note older versions of Python or PyTorch may also work. However, the versions above are strongly recommended to provide all features such as `torch.compile`.
- [CUDA toolkits](https://developer.nvidia.com/cuda-toolkit-archive) that match the CUDA version for your PyTorch installation. This should typically be CUDA 12.1 if you follow the default installation command.
- If you are installing on Windows, it's strongly recommended to use [Windows Subsystem for Linux (WSL)](https://learn.microsoft.com/en-us/windows/wsl/install) with Ubuntu.
Then, install SAM 2 from the root of this repository via
```bash
pip install -e ".[notebooks]"
```
Note that you may skip building the SAM 2 CUDA extension during installation via environment variable `SAM2_BUILD_CUDA=0`, as follows:
```bash
# skip the SAM 2 CUDA extension
SAM2_BUILD_CUDA=0 pip install -e ".[notebooks]"
```
This would also skip the post-processing step at runtime (removing small holes and sprinkles in the output masks, which requires the CUDA extension), but shouldn't affect the results in most cases.
### Building the SAM 2 CUDA extension
By default, we allow the installation to proceed even if the SAM 2 CUDA extension fails to build. (In this case, the build errors are hidden unless using `-v` for verbose output in `pip install`.)
If you see a message like `Skipping the post-processing step due to the error above` at runtime or `Failed to build the SAM 2 CUDA extension due to the error above` during installation, it indicates that the SAM 2 CUDA extension failed to build in your environment. In this case, **you can still use SAM 2 for both image and video applications**. The post-processing step (removing small holes and sprinkles in the output masks) will be skipped, but this shouldn't affect the results in most cases.
If you would like to enable this post-processing step, you can reinstall SAM 2 on a GPU machine with environment variable `SAM2_BUILD_ALLOW_ERRORS=0` to force building the CUDA extension (and raise errors if it fails to build), as follows
```bash
pip uninstall -y SAM-2 && \
rm -f ./sam2/*.so && \
SAM2_BUILD_ALLOW_ERRORS=0 pip install -v -e ".[notebooks]"
```
Note that PyTorch needs to be installed first before building the SAM 2 CUDA extension. It's also necessary to install [CUDA toolkits](https://developer.nvidia.com/cuda-toolkit-archive) that match the CUDA version for your PyTorch installation. (This should typically be CUDA 12.1 if you follow the default installation command.) After installing the CUDA toolkits, you can check its version via `nvcc --version`.
Please check the section below on common installation issues if the CUDA extension fails to build during installation or load at runtime.
### Common Installation Issues
Click each issue for its solutions:
<details>
<summary>
I got `ImportError: cannot import name '_C' from 'sam2'`
</summary>
<br/>
This is usually because you haven't run the `pip install -e ".[notebooks]"` step above or the installation failed. Please install SAM 2 first, and see the other issues if your installation fails.
In some systems, you may need to run `python setup.py build_ext --inplace` in the SAM 2 repo root as suggested in https://github.com/facebookresearch/sam2/issues/77.
</details>
<details>
<summary>
I got `MissingConfigException: Cannot find primary config 'configs/sam2.1/sam2.1_hiera_l.yaml'`
</summary>
<br/>
This is usually because you haven't run the `pip install -e .` step above, so `sam2` isn't in your Python's `sys.path`. Please run this installation step. In case it still fails after the installation step, you may try manually adding the root of this repo to `PYTHONPATH` via
```bash
export SAM2_REPO_ROOT=/path/to/sam2 # path to this repo
export PYTHONPATH="${SAM2_REPO_ROOT}:${PYTHONPATH}"
```
to manually add `sam2_configs` into your Python's `sys.path`.
</details>
<details>
<summary>
I got `RuntimeError: Error(s) in loading state_dict for SAM2Base` when loading the new SAM 2.1 checkpoints
</summary>
<br/>
This is likely because you have installed a previous version of this repo, which doesn't have the new modules to support the SAM 2.1 checkpoints yet. Please try the following steps:
1. pull the latest code from the `main` branch of this repo
2. run `pip uninstall -y SAM-2` to uninstall any previous installations
3. then install the latest repo again using `pip install -e ".[notebooks]"`
In case the steps above still don't resolve the error, please try running in your Python environment the following
```python
from sam2.modeling import sam2_base
print(sam2_base.__file__)
```
and check whether the content in the printed local path of `sam2/modeling/sam2_base.py` matches the latest one in https://github.com/facebookresearch/sam2/blob/main/sam2/modeling/sam2_base.py (e.g. whether your local file has `no_obj_embed_spatial`) to indentify if you're still using a previous installation.
</details>
<details>
<summary>
My installation failed with `CUDA_HOME environment variable is not set`
</summary>
<br/>
This usually happens because the installation step cannot find the CUDA toolkits (that contain the NVCC compiler) to build a custom CUDA kernel in SAM 2. Please install [CUDA toolkits](https://developer.nvidia.com/cuda-toolkit-archive) or the version that matches the CUDA version for your PyTorch installation. If the error persists after installing CUDA toolkits, you may explicitly specify `CUDA_HOME` via
```
export CUDA_HOME=/usr/local/cuda # change to your CUDA toolkit path
```
and rerun the installation.
Also, you should make sure
```
python -c 'import torch; from torch.utils.cpp_extension import CUDA_HOME; print(torch.cuda.is_available(), CUDA_HOME)'
```
print `(True, a directory with cuda)` to verify that the CUDA toolkits are correctly set up.
If you are still having problems after verifying that the CUDA toolkit is installed and the `CUDA_HOME` environment variable is set properly, you may have to add the `--no-build-isolation` flag to the pip command:
```
pip install --no-build-isolation -e .
```
</details>
<details>
<summary>
I got `undefined symbol: _ZN3c1015SmallVectorBaseIjE8grow_podEPKvmm` (or similar errors)
</summary>
<br/>
This usually happens because you have multiple versions of dependencies (PyTorch or CUDA) in your environment. During installation, the SAM 2 library is compiled against one version library while at run time it links against another version. This might be due to that you have different versions of PyTorch or CUDA installed separately via `pip` or `conda`. You may delete one of the duplicates to only keep a single PyTorch and CUDA version.
In particular, if you have a lower PyTorch version than 2.5.1, it's recommended to upgrade to PyTorch 2.5.1 or higher first. Otherwise, the installation script will try to upgrade to the latest PyTorch using `pip`, which could sometimes lead to duplicated PyTorch installation if you have previously installed another PyTorch version using `conda`.
We have been building SAM 2 against PyTorch 2.5.1 internally. However, a few user comments (e.g. https://github.com/facebookresearch/sam2/issues/22, https://github.com/facebookresearch/sam2/issues/14) suggested that downgrading to PyTorch 2.1.0 might resolve this problem. In case the error persists, you may try changing the restriction from `torch>=2.5.1` to `torch==2.1.0` in both [`pyproject.toml`](pyproject.toml) and [`setup.py`](setup.py) to allow PyTorch 2.1.0.
</details>
<details>
<summary>
I got `CUDA error: no kernel image is available for execution on the device`
</summary>
<br/>
A possible cause could be that the CUDA kernel is somehow not compiled towards your GPU's CUDA [capability](https://developer.nvidia.com/cuda-gpus). This could happen if the installation is done in an environment different from the runtime (e.g. in a slurm system).
You can try pulling the latest code from the SAM 2 repo and running the following
```
export TORCH_CUDA_ARCH_LIST=9.0 8.0 8.6 8.9 7.0 7.2 7.5 6.0`
```
to manually specify the CUDA capability in the compilation target that matches your GPU.
</details>
<details>
<summary>
I got `RuntimeError: No available kernel. Aborting execution.` (or similar errors)
</summary>
<br/>
This is probably because your machine doesn't have a GPU or a compatible PyTorch version for Flash Attention (see also https://discuss.pytorch.org/t/using-f-scaled-dot-product-attention-gives-the-error-runtimeerror-no-available-kernel-aborting-execution/180900 for a discussion in PyTorch forum). You may be able to resolve this error by replacing the line
```python
OLD_GPU, USE_FLASH_ATTN, MATH_KERNEL_ON = get_sdpa_settings()
```
in [`sam2/modeling/sam/transformer.py`](sam2/modeling/sam/transformer.py) with
```python
OLD_GPU, USE_FLASH_ATTN, MATH_KERNEL_ON = True, True, True
```
to relax the attention kernel setting and use other kernels than Flash Attention.
</details>
<details>
<summary>
I got `Error compiling objects for extension`
</summary>
<br/>
You may see error log of:
> unsupported Microsoft Visual Studio version! Only the versions between 2017 and 2022 (inclusive) are supported! The nvcc flag '-allow-unsupported-compiler' can be used to override this version check; however, using an unsupported host compiler may cause compilation failure or incorrect run time execution. Use at your own risk.
This is probably because your versions of CUDA and Visual Studio are incompatible. (see also https://stackoverflow.com/questions/78515942/cuda-compatibility-with-visual-studio-2022-version-17-10 for a discussion in stackoverflow).<br>
You may be able to fix this by adding the `-allow-unsupported-compiler` argument to `nvcc` after L48 in the [setup.py](https://github.com/facebookresearch/sam2/blob/main/setup.py). <br>
After adding the argument, `get_extension()` will look like this:
```python
def get_extensions():
srcs = ["sam2/csrc/connected_components.cu"]
compile_args = {
"cxx": [],
"nvcc": [
"-DCUDA_HAS_FP16=1",
"-D__CUDA_NO_HALF_OPERATORS__",
"-D__CUDA_NO_HALF_CONVERSIONS__",
"-D__CUDA_NO_HALF2_OPERATORS__",
"-allow-unsupported-compiler" # Add this argument
],
}
ext_modules = [CUDAExtension("sam2._C", srcs, extra_compile_args=compile_args)]
return ext_modules
```
</details>
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DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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# Copyright (c) Meta Platforms, Inc. and affiliates.
# All rights reserved.
# This source code is licensed under the license found in the
# LICENSE file in the root directory of this source tree.
recursive-include sam2 *.yaml #include all config files
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# SAM2
## 项目简介
Segment Anything Model 2 （SAM 2）是一个用于解决图像和视频中可提示视觉分割问题的基础模型。将 SAM 扩展到视频领域，将图像视为单帧视频。该模型采用简单的 Transformer 架构，并利用流式内存实现实时视频处理。
---
## 环境部署
### 1. 拉取镜像
```bash
docker pull image.sourcefind.cn:5000/dcu/admin/base/pytorch:2.5.1-ubuntu22.04-dtk25.04.2-py3.10
```
### 2. 创建容器
```bash
docker run -it \
--network=host \
--hostname=localhost \
--name=sam2 \
-v /opt/hyhal:/opt/hyhal:ro \
-v $PWD:/workspace \
--ipc=host \
--device=/dev/kfd \
--device=/dev/mkfd \
--device=/dev/dri \
--shm-size=512G \
--privileged \
--group-add video \
--cap-add=SYS_PTRACE \
-u root \
--security-opt seccomp=unconfined \
image.sourcefind.cn:5000/dcu/admin/base/pytorch:2.5.1-ubuntu22.04-dtk25.04.2-py3.10 \
/bin/bash
```
---
## 测试步骤
### 1. 拉取代码
```bash
git clone http://developer.sourcefind.cn/codes/bw-bestperf/sam2.git
cd sam2
```
### 2. 安装依赖
```bash
python setup.py install
pip install hydra-core iopath -i https://pypi.tuna.tsinghua.edu.cn/simple
```
修改代码：
```bash
vim /usr/local/lib/python3.10/dist-packages/sam2/modeling/sam2_base.py
# 在第20行添加：
MaskDecoder = torch.compile(MaskDecoder, mode="max-autotune-no-cudagraphs")
PromptEncoder = torch.compile(PromptEncoder, mode="max-autotune-no-cudagraphs")
TwoWayTransformer = torch.compile(TwoWayTransformer, mode="max-autotune-no-cudagraphs")
```
### 3. 下载模型
```bash
cd checkpoints
bash download_ckpts.sh
cd ..
```
---
## 测试代码示例（单卡测试）
修改sam2/sam2/benchmark_image-warmup.py中的权重、yaml文件、数据集路径：
```bash
cd sam2
vim benchmark_image-warmup.py
# 将以下变量修改为本地路径
sam2_checkpoint = "/path/sam2/checkpoints/sam2.1_hiera_large.pt"
model_cfg = "configs/sam2.1/sam2.1_hiera_l.yaml"
images_dir = "/path/sam2/coco_mini/images/val2017"
```
运行单卡推理：
```bash
python benchmark_image-warmup.py
```
---
## 贡献指南
欢迎对 SAM2 项目进行贡献！请遵循以下步骤：
1. Fork 本仓库，并新建分支进行功能开发或问题修复。
2. 提交规范的 commit 信息，描述清晰。
3. 提交 Pull Request，简述修改内容及目的。
4. 遵守项目代码规范和测试标准。
5. 参与代码评审，积极沟通改进方案。
---
## 许可证
本项目遵循 MIT 许可证，详见 [LICENSE](./LICENSE) 文件。
---
感谢您的关注与支持！如有问题，欢迎提交 Issue 或联系维护团队。
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# SAM 2: Segment Anything in Images and Videos
**[AI at Meta, FAIR](https://ai.meta.com/research/)**
[Nikhila Ravi](https://nikhilaravi.com/), [Valentin Gabeur](https://gabeur.github.io/), [Yuan-Ting Hu](https://scholar.google.com/citations?user=E8DVVYQAAAAJ&hl=en), [Ronghang Hu](https://ronghanghu.com/), [Chaitanya Ryali](https://scholar.google.com/citations?user=4LWx24UAAAAJ&hl=en), [Tengyu Ma](https://scholar.google.com/citations?user=VeTSl0wAAAAJ&hl=en), [Haitham Khedr](https://hkhedr.com/), [Roman Rädle](https://scholar.google.de/citations?user=Tpt57v0AAAAJ&hl=en), [Chloe Rolland](https://scholar.google.com/citations?hl=fr&user=n-SnMhoAAAAJ), [Laura Gustafson](https://scholar.google.com/citations?user=c8IpF9gAAAAJ&hl=en), [Eric Mintun](https://ericmintun.github.io/), [Junting Pan](https://junting.github.io/), [Kalyan Vasudev Alwala](https://scholar.google.co.in/citations?user=m34oaWEAAAAJ&hl=en), [Nicolas Carion](https://www.nicolascarion.com/), [Chao-Yuan Wu](https://chaoyuan.org/), [Ross Girshick](https://www.rossgirshick.info/), [Piotr Dollár](https://pdollar.github.io/), [Christoph Feichtenhofer](https://feichtenhofer.github.io/)
[[`Paper`](https://ai.meta.com/research/publications/sam-2-segment-anything-in-images-and-videos/)] [[`Project`](https://ai.meta.com/sam2)] [[`Demo`](https://sam2.metademolab.com/)] [[`Dataset`](https://ai.meta.com/datasets/segment-anything-video)] [[`Blog`](https://ai.meta.com/blog/segment-anything-2)] [[`BibTeX`](#citing-sam-2)]
![SAM 2 architecture](assets/model_diagram.png?raw=true)
**Segment Anything Model 2 (SAM 2)** is a foundation model towards solving promptable visual segmentation in images and videos. We extend SAM to video by considering images as a video with a single frame. The model design is a simple transformer architecture with streaming memory for real-time video processing. We build a model-in-the-loop data engine, which improves model and data via user interaction, to collect [**our SA-V dataset**](https://ai.meta.com/datasets/segment-anything-video), the largest video segmentation dataset to date. SAM 2 trained on our data provides strong performance across a wide range of tasks and visual domains.
![SA-V dataset](assets/sa_v_dataset.jpg?raw=true)
## Latest updates
**12/11/2024 -- full model compilation for a major VOS speedup and a new `SAM2VideoPredictor` to better handle multi-object tracking**
- We now support `torch.compile` of the entire SAM 2 model on videos, which can be turned on by setting `vos_optimized=True` in `build_sam2_video_predictor`, leading to a major speedup for VOS inference.
- We update the implementation of `SAM2VideoPredictor` to support independent per-object inference, allowing us to relax the assumption of prompting for multi-object tracking and adding new objects after tracking starts.
- See [`RELEASE_NOTES.md`](RELEASE_NOTES.md) for full details.
**09/30/2024 -- SAM 2.1 Developer Suite (new checkpoints, training code, web demo) is released**
- A new suite of improved model checkpoints (denoted as **SAM 2.1**) are released. See [Model Description](#model-description) for details.
* To use the new SAM 2.1 checkpoints, you need the latest model code from this repo. If you have installed an earlier version of this repo, please first uninstall the previous version via `pip uninstall SAM-2`, pull the latest code from this repo (with `git pull`), and then reinstall the repo following [Installation](#installation) below.
- The training (and fine-tuning) code has been released. See [`training/README.md`](training/README.md) on how to get started.
- The frontend + backend code for the SAM 2 web demo has been released. See [`demo/README.md`](demo/README.md) for details.
## Installation
SAM 2 needs to be installed first before use. The code requires `python>=3.10`, as well as `torch>=2.5.1` and `torchvision>=0.20.1`. Please follow the instructions [here](https://pytorch.org/get-started/locally/) to install both PyTorch and TorchVision dependencies. You can install SAM 2 on a GPU machine using:
```bash
git clone https://github.com/facebookresearch/sam2.git && cd sam2
pip install -e .
```
If you are installing on Windows, it's strongly recommended to use [Windows Subsystem for Linux (WSL)](https://learn.microsoft.com/en-us/windows/wsl/install) with Ubuntu.
To use the SAM 2 predictor and run the example notebooks, `jupyter` and `matplotlib` are required and can be installed by:
```bash
pip install -e ".[notebooks]"
```
Note:
1. It's recommended to create a new Python environment via [Anaconda](https://www.anaconda.com/) for this installation and install PyTorch 2.5.1 (or higher) via `pip` following https://pytorch.org/. If you have a PyTorch version lower than 2.5.1 in your current environment, the installation command above will try to upgrade it to the latest PyTorch version using `pip`.
2. The step above requires compiling a custom CUDA kernel with the `nvcc` compiler. If it isn't already available on your machine, please install the [CUDA toolkits](https://developer.nvidia.com/cuda-toolkit-archive) with a version that matches your PyTorch CUDA version.
3. If you see a message like `Failed to build the SAM 2 CUDA extension` during installation, you can ignore it and still use SAM 2 (some post-processing functionality may be limited, but it doesn't affect the results in most cases).
Please see [`INSTALL.md`](./INSTALL.md) for FAQs on potential issues and solutions.
## Getting Started
### Download Checkpoints
First, we need to download a model checkpoint. All the model checkpoints can be downloaded by running:
```bash
cd checkpoints && \
./download_ckpts.sh && \
cd ..
```
or individually from:
- [sam2.1_hiera_tiny.pt](https://dl.fbaipublicfiles.com/segment_anything_2/092824/sam2.1_hiera_tiny.pt)
- [sam2.1_hiera_small.pt](https://dl.fbaipublicfiles.com/segment_anything_2/092824/sam2.1_hiera_small.pt)
- [sam2.1_hiera_base_plus.pt](https://dl.fbaipublicfiles.com/segment_anything_2/092824/sam2.1_hiera_base_plus.pt)
- [sam2.1_hiera_large.pt](https://dl.fbaipublicfiles.com/segment_anything_2/092824/sam2.1_hiera_large.pt)
(note that these are the improved checkpoints denoted as SAM 2.1; see [Model Description](#model-description) for details.)
Then SAM 2 can be used in a few lines as follows for image and video prediction.
### Image prediction
SAM 2 has all the capabilities of [SAM](https://github.com/facebookresearch/segment-anything) on static images, and we provide image prediction APIs that closely resemble SAM for image use cases. The `SAM2ImagePredictor` class has an easy interface for image prompting.
```python
import torch
from sam2.build_sam import build_sam2
from sam2.sam2_image_predictor import SAM2ImagePredictor
checkpoint = "./checkpoints/sam2.1_hiera_large.pt"
model_cfg = "configs/sam2.1/sam2.1_hiera_l.yaml"
predictor = SAM2ImagePredictor(build_sam2(model_cfg, checkpoint))
with torch.inference_mode(), torch.autocast("cuda", dtype=torch.bfloat16):
predictor.set_image(<your_image>)
masks, _, _ = predictor.predict(<input_prompts>)
```
Please refer to the examples in [image_predictor_example.ipynb](./notebooks/image_predictor_example.ipynb) (also in Colab [here](https://colab.research.google.com/github/facebookresearch/sam2/blob/main/notebooks/image_predictor_example.ipynb)) for static image use cases.
SAM 2 also supports automatic mask generation on images just like SAM. Please see [automatic_mask_generator_example.ipynb](./notebooks/automatic_mask_generator_example.ipynb) (also in Colab [here](https://colab.research.google.com/github/facebookresearch/sam2/blob/main/notebooks/automatic_mask_generator_example.ipynb)) for automatic mask generation in images.
### Video prediction
For promptable segmentation and tracking in videos, we provide a video predictor with APIs for example to add prompts and propagate masklets throughout a video. SAM 2 supports video inference on multiple objects and uses an inference state to keep track of the interactions in each video.
```python
import torch
from sam2.build_sam import build_sam2_video_predictor
checkpoint = "./checkpoints/sam2.1_hiera_large.pt"
model_cfg = "configs/sam2.1/sam2.1_hiera_l.yaml"
predictor = build_sam2_video_predictor(model_cfg, checkpoint)
with torch.inference_mode(), torch.autocast("cuda", dtype=torch.bfloat16):
state = predictor.init_state(<your_video>)
# add new prompts and instantly get the output on the same frame
frame_idx, object_ids, masks = predictor.add_new_points_or_box(state, <your_prompts>):
# propagate the prompts to get masklets throughout the video
for frame_idx, object_ids, masks in predictor.propagate_in_video(state):
...
```
Please refer to the examples in [video_predictor_example.ipynb](./notebooks/video_predictor_example.ipynb) (also in Colab [here](https://colab.research.google.com/github/facebookresearch/sam2/blob/main/notebooks/video_predictor_example.ipynb)) for details on how to add click or box prompts, make refinements, and track multiple objects in videos.
## Load from 🤗 Hugging Face
Alternatively, models can also be loaded from [Hugging Face](https://huggingface.co/models?search=facebook/sam2) (requires `pip install huggingface_hub`).
For image prediction:
```python
import torch
from sam2.sam2_image_predictor import SAM2ImagePredictor
predictor = SAM2ImagePredictor.from_pretrained("facebook/sam2-hiera-large")
with torch.inference_mode(), torch.autocast("cuda", dtype=torch.bfloat16):
predictor.set_image(<your_image>)
masks, _, _ = predictor.predict(<input_prompts>)
```
For video prediction:
```python
import torch
from sam2.sam2_video_predictor import SAM2VideoPredictor
predictor = SAM2VideoPredictor.from_pretrained("facebook/sam2-hiera-large")
with torch.inference_mode(), torch.autocast("cuda", dtype=torch.bfloat16):
state = predictor.init_state(<your_video>)
# add new prompts and instantly get the output on the same frame
frame_idx, object_ids, masks = predictor.add_new_points_or_box(state, <your_prompts>):
# propagate the prompts to get masklets throughout the video
for frame_idx, object_ids, masks in predictor.propagate_in_video(state):
...
```
## Model Description
### SAM 2.1 checkpoints
The table below shows the improved SAM 2.1 checkpoints released on September 29, 2024.
| **Model** | **Size (M)** | **Speed (FPS)** | **SA-V test (J&F)** | **MOSE val (J&F)** | **LVOS v2 (J&F)** |
| :------------------: | :----------: | :--------------------: | :-----------------: | :----------------: | :---------------: |
| sam2.1_hiera_tiny <br /> ([config](sam2/configs/sam2.1/sam2.1_hiera_t.yaml), [checkpoint](https://dl.fbaipublicfiles.com/segment_anything_2/092824/sam2.1_hiera_tiny.pt)) | 38.9 | 91.2 | 76.5 | 71.8 | 77.3 |
| sam2.1_hiera_small <br /> ([config](sam2/configs/sam2.1/sam2.1_hiera_s.yaml), [checkpoint](https://dl.fbaipublicfiles.com/segment_anything_2/092824/sam2.1_hiera_small.pt)) | 46 | 84.8 | 76.6 | 73.5 | 78.3 |
| sam2.1_hiera_base_plus <br /> ([config](sam2/configs/sam2.1/sam2.1_hiera_b+.yaml), [checkpoint](https://dl.fbaipublicfiles.com/segment_anything_2/092824/sam2.1_hiera_base_plus.pt)) | 80.8 | 64.1 | 78.2 | 73.7 | 78.2 |
| sam2.1_hiera_large <br /> ([config](sam2/configs/sam2.1/sam2.1_hiera_l.yaml), [checkpoint](https://dl.fbaipublicfiles.com/segment_anything_2/092824/sam2.1_hiera_large.pt)) | 224.4 | 39.5 | 79.5 | 74.6 | 80.6 |
### SAM 2 checkpoints
The previous SAM 2 checkpoints released on July 29, 2024 can be found as follows:
| **Model** | **Size (M)** | **Speed (FPS)** | **SA-V test (J&F)** | **MOSE val (J&F)** | **LVOS v2 (J&F)** |
| :------------------: | :----------: | :--------------------: | :-----------------: | :----------------: | :---------------: |
| sam2_hiera_tiny <br /> ([config](sam2/configs/sam2/sam2_hiera_t.yaml), [checkpoint](https://dl.fbaipublicfiles.com/segment_anything_2/072824/sam2_hiera_tiny.pt)) | 38.9 | 91.5 | 75.0 | 70.9 | 75.3 |
| sam2_hiera_small <br /> ([config](sam2/configs/sam2/sam2_hiera_s.yaml), [checkpoint](https://dl.fbaipublicfiles.com/segment_anything_2/072824/sam2_hiera_small.pt)) | 46 | 85.6 | 74.9 | 71.5 | 76.4 |
| sam2_hiera_base_plus <br /> ([config](sam2/configs/sam2/sam2_hiera_b+.yaml), [checkpoint](https://dl.fbaipublicfiles.com/segment_anything_2/072824/sam2_hiera_base_plus.pt)) | 80.8 | 64.8 | 74.7 | 72.8 | 75.8 |
| sam2_hiera_large <br /> ([config](sam2/configs/sam2/sam2_hiera_l.yaml), [checkpoint](https://dl.fbaipublicfiles.com/segment_anything_2/072824/sam2_hiera_large.pt)) | 224.4 | 39.7 | 76.0 | 74.6 | 79.8 |
Speed measured on an A100 with `torch 2.5.1, cuda 12.4`. See `benchmark.py` for an example on benchmarking (compiling all the model components). Compiling only the image encoder can be more flexible and also provide (a smaller) speed-up (set `compile_image_encoder: True` in the config).
## Segment Anything Video Dataset
See [sav_dataset/README.md](sav_dataset/README.md) for details.
## Training SAM 2
You can train or fine-tune SAM 2 on custom datasets of images, videos, or both. Please check the training [README](training/README.md) on how to get started.
## Web demo for SAM 2
We have released the frontend + backend code for the SAM 2 web demo (a locally deployable version similar to https://sam2.metademolab.com/demo). Please see the web demo [README](demo/README.md) for details.
## License
The SAM 2 model checkpoints, SAM 2 demo code (front-end and back-end), and SAM 2 training code are licensed under [Apache 2.0](./LICENSE), however the [Inter Font](https://github.com/rsms/inter?tab=OFL-1.1-1-ov-file) and [Noto Color Emoji](https://github.com/googlefonts/noto-emoji) used in the SAM 2 demo code are made available under the [SIL Open Font License, version 1.1](https://openfontlicense.org/open-font-license-official-text/).
## Contributing
See [contributing](CONTRIBUTING.md) and the [code of conduct](CODE_OF_CONDUCT.md).
## Contributors
The SAM 2 project was made possible with the help of many contributors (alphabetical):
Karen Bergan, Daniel Bolya, Alex Bosenberg, Kai Brown, Vispi Cassod, Christopher Chedeau, Ida Cheng, Luc Dahlin, Shoubhik Debnath, Rene Martinez Doehner, Grant Gardner, Sahir Gomez, Rishi Godugu, Baishan Guo, Caleb Ho, Andrew Huang, Somya Jain, Bob Kamma, Amanda Kallet, Jake Kinney, Alexander Kirillov, Shiva Koduvayur, Devansh Kukreja, Robert Kuo, Aohan Lin, Parth Malani, Jitendra Malik, Mallika Malhotra, Miguel Martin, Alexander Miller, Sasha Mitts, William Ngan, George Orlin, Joelle Pineau, Kate Saenko, Rodrick Shepard, Azita Shokrpour, David Soofian, Jonathan Torres, Jenny Truong, Sagar Vaze, Meng Wang, Claudette Ward, Pengchuan Zhang.
Third-party code: we use a GPU-based connected component algorithm adapted from [`cc_torch`](https://github.com/zsef123/Connected_components_PyTorch) (with its license in [`LICENSE_cctorch`](./LICENSE_cctorch)) as an optional post-processing step for the mask predictions.
## Citing SAM 2
If you use SAM 2 or the SA-V dataset in your research, please use the following BibTeX entry.
```bibtex
@article{ravi2024sam2,
title={SAM 2: Segment Anything in Images and Videos},
author={Ravi, Nikhila and Gabeur, Valentin and Hu, Yuan-Ting and Hu, Ronghang and Ryali, Chaitanya and Ma, Tengyu and Khedr, Haitham and R{\"a}dle, Roman and Rolland, Chloe and Gustafson, Laura and Mintun, Eric and Pan, Junting and Alwala, Kalyan Vasudev and Carion, Nicolas and Wu, Chao-Yuan and Girshick, Ross and Doll{\'a}r, Piotr and Feichtenhofer, Christoph},
journal={arXiv preprint arXiv:2408.00714},
url={https://arxiv.org/abs/2408.00714},
year={2024}
}
```
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## SAM 2 release notes
### 12/11/2024 -- full model compilation for a major VOS speedup and a new `SAM2VideoPredictor` to better handle multi-object tracking
- We now support `torch.compile` of the entire SAM 2 model on videos, which can be turned on by setting `vos_optimized=True` in `build_sam2_video_predictor` (it uses the new `SAM2VideoPredictorVOS` predictor class in `sam2/sam2_video_predictor.py`).
* Compared to the previous setting (which only compiles the image encoder backbone), the new full model compilation gives a major speedup in inference FPS.
* In the VOS prediction script `tools/vos_inference.py`, you can specify this option in `tools/vos_inference.py` via the `--use_vos_optimized_video_predictor` flag.
* Note that turning on this flag might introduce a small variance in the predictions due to numerical differences caused by `torch.compile` of the full model.
* **PyTorch 2.5.1 is the minimum version for full support of this feature**. (Earlier PyTorch versions might run into compilation errors in some cases.) Therefore, we have updated the minimum PyTorch version to 2.5.1 accordingly in the installation scripts.
- We also update the implementation of the `SAM2VideoPredictor` class for the SAM 2 video prediction in `sam2/sam2_video_predictor.py`, which allows for independent per-object inference. Specifically, in the new `SAM2VideoPredictor`:
* Now **we handle the inference of each object independently** (as if we are opening a separate session for each object) while sharing their backbone features.
* This change allows us to relax the assumption of prompting for multi-object tracking. Previously (due to the batching behavior in inference), if a video frame receives clicks for only a subset of objects, the rest of the (non-prompted) objects are assumed to be non-existent in this frame (i.e., in such frames, the user is telling SAM 2 that the rest of the objects don't appear). Now, if a frame receives clicks for only a subset of objects, we do not make any assumptions about the remaining (non-prompted) objects (i.e., now each object is handled independently and is not affected by how other objects are prompted). As a result, **we allow adding new objects after tracking starts** after this change (which was previously a restriction on usage).
* We believe that the new version is a more natural inference behavior and therefore switched to it as the default behavior. The previous implementation of `SAM2VideoPredictor` is backed up to in `sam2/sam2_video_predictor_legacy.py`. All the VOS inference results using `tools/vos_inference.py` should remain the same after this change to the `SAM2VideoPredictor` class.
### 09/30/2024 -- SAM 2.1 Developer Suite (new checkpoints, training code, web demo) is released
- A new suite of improved model checkpoints (denoted as **SAM 2.1**) are released. See [Model Description](#model-description) for details.
* To use the new SAM 2.1 checkpoints, you need the latest model code from this repo. If you have installed an earlier version of this repo, please first uninstall the previous version via `pip uninstall SAM-2`, pull the latest code from this repo (with `git pull`), and then reinstall the repo following [Installation](#installation) below.
- The training (and fine-tuning) code has been released. See [`training/README.md`](training/README.md) on how to get started.
- The frontend + backend code for the SAM 2 web demo has been released. See [`demo/README.md`](demo/README.md) for details.
### 07/29/2024 -- SAM 2 is released
- We release Segment Anything Model 2 (SAM 2), a foundation model towards solving promptable visual segmentation in images and videos.
* SAM 2 code: https://github.com/facebookresearch/sam2
* SAM 2 demo: https://sam2.metademolab.com/
* SAM 2 paper: https://arxiv.org/abs/2408.00714
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ARG BASE_IMAGE=pytorch/pytorch:2.5.1-cuda12.1-cudnn9-runtime
ARG MODEL_SIZE=base_plus
FROM ${BASE_IMAGE}
# Gunicorn environment variables
ENV GUNICORN_WORKERS=1
ENV GUNICORN_THREADS=2
ENV GUNICORN_PORT=5000
# SAM 2 environment variables
ENV APP_ROOT=/opt/sam2
ENV PYTHONUNBUFFERED=1
ENV SAM2_BUILD_CUDA=0
ENV MODEL_SIZE=${MODEL_SIZE}
# Install system requirements
RUN apt-get update && apt-get install -y --no-install-recommends \
ffmpeg \
libavutil-dev \
libavcodec-dev \
libavformat-dev \
libswscale-dev \
pkg-config \
build-essential \
libffi-dev
COPY setup.py .
COPY README.md .
RUN pip install --upgrade pip setuptools
RUN pip install -e ".[interactive-demo]"
# https://github.com/Kosinkadink/ComfyUI-VideoHelperSuite/issues/69#issuecomment-1826764707
RUN rm /opt/conda/bin/ffmpeg && ln -s /bin/ffmpeg /opt/conda/bin/ffmpeg
# Make app directory. This directory will host all files required for the
# backend and SAM 2 inference files.
RUN mkdir ${APP_ROOT}
# Copy backend server files
COPY demo/backend/server ${APP_ROOT}/server
# Copy SAM 2 inference files
COPY sam2 ${APP_ROOT}/server/sam2
# Download SAM 2.1 checkpoints
ADD https://dl.fbaipublicfiles.com/segment_anything_2/092824/sam2.1_hiera_tiny.pt ${APP_ROOT}/checkpoints/sam2.1_hiera_tiny.pt
ADD https://dl.fbaipublicfiles.com/segment_anything_2/092824/sam2.1_hiera_small.pt ${APP_ROOT}/checkpoints/sam2.1_hiera_small.pt
ADD https://dl.fbaipublicfiles.com/segment_anything_2/092824/sam2.1_hiera_base_plus.pt ${APP_ROOT}/checkpoints/sam2.1_hiera_base_plus.pt
ADD https://dl.fbaipublicfiles.com/segment_anything_2/092824/sam2.1_hiera_large.pt ${APP_ROOT}/checkpoints/sam2.1_hiera_large.pt
WORKDIR ${APP_ROOT}/server
# https://pythonspeed.com/articles/gunicorn-in-docker/
CMD gunicorn --worker-tmp-dir /dev/shm \
--worker-class gthread app:app \
--log-level info \
--access-logfile /dev/stdout \
--log-file /dev/stderr \
--workers ${GUNICORN_WORKERS} \
--threads ${GUNICORN_THREADS} \
--bind 0.0.0.0:${GUNICORN_PORT} \
--timeout 60
checkpoints/download_ckpts.sh 0 → 100755
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#!/bin/bash
# Copyright (c) Meta Platforms, Inc. and affiliates.
# All rights reserved.
# This source code is licensed under the license found in the
# LICENSE file in the root directory of this source tree.
# Use either wget or curl to download the checkpoints
if command -v wget &> /dev/null; then
CMD="wget"
elif command -v curl &> /dev/null; then
CMD="curl -L -O"
else
echo "Please install wget or curl to download the checkpoints."
exit 1
fi
# Define the URLs for SAM 2 checkpoints
# SAM2_BASE_URL="https://dl.fbaipublicfiles.com/segment_anything_2/072824"
# sam2_hiera_t_url="${SAM2_BASE_URL}/sam2_hiera_tiny.pt"
# sam2_hiera_s_url="${SAM2_BASE_URL}/sam2_hiera_small.pt"
# sam2_hiera_b_plus_url="${SAM2_BASE_URL}/sam2_hiera_base_plus.pt"
# sam2_hiera_l_url="${SAM2_BASE_URL}/sam2_hiera_large.pt"
# Download each of the four checkpoints using wget
# echo "Downloading sam2_hiera_tiny.pt checkpoint..."
# $CMD $sam2_hiera_t_url || { echo "Failed to download checkpoint from $sam2_hiera_t_url"; exit 1; }
# echo "Downloading sam2_hiera_small.pt checkpoint..."
# $CMD $sam2_hiera_s_url || { echo "Failed to download checkpoint from $sam2_hiera_s_url"; exit 1; }
# echo "Downloading sam2_hiera_base_plus.pt checkpoint..."
# $CMD $sam2_hiera_b_plus_url || { echo "Failed to download checkpoint from $sam2_hiera_b_plus_url"; exit 1; }
# echo "Downloading sam2_hiera_large.pt checkpoint..."
# $CMD $sam2_hiera_l_url || { echo "Failed to download checkpoint from $sam2_hiera_l_url"; exit 1; }
# Define the URLs for SAM 2.1 checkpoints
SAM2p1_BASE_URL="https://dl.fbaipublicfiles.com/segment_anything_2/092824"
sam2p1_hiera_t_url="${SAM2p1_BASE_URL}/sam2.1_hiera_tiny.pt"
sam2p1_hiera_s_url="${SAM2p1_BASE_URL}/sam2.1_hiera_small.pt"
sam2p1_hiera_b_plus_url="${SAM2p1_BASE_URL}/sam2.1_hiera_base_plus.pt"
sam2p1_hiera_l_url="${SAM2p1_BASE_URL}/sam2.1_hiera_large.pt"
# SAM 2.1 checkpoints
echo "Downloading sam2.1_hiera_tiny.pt checkpoint..."
$CMD $sam2p1_hiera_t_url || { echo "Failed to download checkpoint from $sam2p1_hiera_t_url"; exit 1; }
echo "Downloading sam2.1_hiera_small.pt checkpoint..."
$CMD $sam2p1_hiera_s_url || { echo "Failed to download checkpoint from $sam2p1_hiera_s_url"; exit 1; }
echo "Downloading sam2.1_hiera_base_plus.pt checkpoint..."
$CMD $sam2p1_hiera_b_plus_url || { echo "Failed to download checkpoint from $sam2p1_hiera_b_plus_url"; exit 1; }
echo "Downloading sam2.1_hiera_large.pt checkpoint..."
$CMD $sam2p1_hiera_l_url || { echo "Failed to download checkpoint from $sam2p1_hiera_l_url"; exit 1; }
echo "All checkpoints are downloaded successfully."
coco_mini/LICENSE 0 → 100644
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coco_mini/README.txt 0 → 100644
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# Introduction
This directory contains software developed by Ultralytics LLC, and **is freely available for redistribution under the GPL-3.0 license**. For more information please visit https://www.ultralytics.com.
# Description
The https://github.com/ultralytics/COCO2YOLO repo contains code to convert JSON datasets into YOLO (darknet) format. The code works on Linux, MacOS and Windows.
# Requirements
Python 3.7 or later with the following `pip3 install -U -r requirements.txt` packages:
- `numpy`
- `tqdm`
# Citation
[![DOI](https://zenodo.org/badge/186122711.svg)](https://zenodo.org/badge/latestdoi/186122711)
# Contact
Issues should be raised directly in the repository. For additional questions or comments please email Glenn Jocher at glenn.jocher@ultralytics.com or visit us at https://contact.ultralytics.com.
\ No newline at end of file
coco_mini/annotations/instances_train2017.json 0 → 100644
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