Update README.md

README.md

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----
-license: apache-2.0
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+---
+license: apache-2.0
+---
+
+
+Repository for SAM 2: Segment Anything in Images and Videos, a foundation model towards solving promptable visual segmentation in images and videos from FAIR. See the [SAM 2 paper](https://arxiv.org/abs/2408.00714) for more information.
+
+
+The official code is publicly release in this [repo](https://github.com/facebookresearch/segment-anything-2/).
+To download the SAM 2 (Hiera-S) checkpoint:
+
+```
+from huggingface_hub import hf_hub_download
+hf_hub_download(repo_id = "facebook/sam2-hiera-small", filename="sam2_hiera_small.pt", local_dir = "./")
+```
+
+### Citation
+
+To cite the paper, model, or software, please use the below:
+```
+@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}
+}
+```