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README.md
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license: apache-2.0
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# Model Details
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Perception Encoder (PE) is a state-of-the-art encoder for image and video understanding trained via simple vision-language learning. It was introduced in "[Perception Encoder: The best visual embeddings
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<img src="https://huggingface.co/facebook/PE-Core-G14-448/resolve/main/docs/pe_image1.png" style="width: 100%; margin: 0 auto; display: block;" />
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# How to use
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```shell
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git clone https://github.com/facebookresearch/perception_models.git
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cd perception_models
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conda create --name
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conda activate
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# Install PyTorch
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pip install torch==2.5.1 torchvision==0.20.1 torchaudio==2.5.1 xformers --index-url https://download.pytorch.org/whl/cu124
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# We use torchcodec for decoding videos into PyTorch tensors
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pip install torchcodec==0.1 --index-url=https://download.pytorch.org/whl/cu124
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pip install -e .
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```
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```python
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import torch
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from
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from PIL import Image
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model_name = 'PEv1-
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pretrained='PATH_TO_PE_Core_L14_336'
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model, _, preprocess = create_model_and_transforms(
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model_name,
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journal={arXiv:xxx.xxxxx},
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year={2025}
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}
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---
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license: apache-2.0
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---
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# Model Details
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Perception Encoder (PE) is a state-of-the-art encoder for image and video understanding trained via simple vision-language learning. It was introduced in "[Perception Encoder: The best visual embeddings
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<img src="https://huggingface.co/facebook/PE-Core-G14-448/resolve/main/docs/pe_image1.png" style="width: 100%; margin: 0 auto; display: block;" />
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#### Model Configurations
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PE core curently comes in 3 sizes. PE core G is the main checkpoint, with L and B models distilled from it.
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| Scale | Tower | Params | Width | Depth | MLP | Heads | CLIP Dim | Resolution / Context Len |
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|:-----:|:------:|:------:|:-----:|:-----:|:----:|:-----:|:--------:|:-------------------------:|
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| **B/16** | Vision | 0.09B | 768 | 12 | 3072 | 12 | 1024 | 224px |
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| | Text | 0.31B | 1024 | 24 | 4096 | 16 | 1024 | 32 tokens |
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| **L/14** | Vision | 0.32B | 1024 | 24 | 4096 | 16 | 1024 | 336px |
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| | Text | 0.31B | 1024 | 24 | 4096 | 16 | 1024 | 32 tokens |
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| **G/14** | Vision | 1.88B | 1536 | 50 | 8960 | 16 | 1280 | 448px |
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| | Text | 0.47B | 1280 | 24 | 5120 | 20 | 1280 | 72 tokens |
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All PE core models use an attention pooling block with 8 heads on top of the vision tower. The L and B models _additionally_ have a class token for global aggregation. See the paper for more details.
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#### Model Performance
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PE core obtains extremely strong results across the board on zero-shot image classification and retrieval _as well as_ zero-shot video classification and retrieval. We present a sample of its performance across those domains below.
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| Model | IN-1k | IN-v2 | IN-A | ObjectNet | COCO-T2I | Kinetics-400 | VTT-T2I | Checkpoint |
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|:---:|:---:|:---:|:---:|:---:|:---:|:---:|:---:|:---:|
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| **B/16 @224** | 78.4 | 71.7 | 62.4 | 71.9 | 50.9 | 65.6 | 47.6 | [PE-Core-B16-224](https://huggingface.co/facebook/PE-Core-B16-224) |
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| **L/14 @336** | 83.5 | 77.9 | 89.0 | 84.7 | 57.1 | 73.4 | 50.3 | [PE-Core-L14-336](https://huggingface.co/facebook/PE-Core-L14-336) |
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| **G/14 @448** | 85.4 | 80.2 | 92.6 | 88.2 | 58.1 | 76.9 | 51.2 | [PE-Core-G14-448](https://huggingface.co/facebook/PE-Core-G14-448) |
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PE core performs particularly well on the _hard_ benchmarks such as ObjectNet and ImageNet-A.
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# How to use
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```shell
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git clone https://github.com/facebookresearch/perception_models.git
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cd perception_models
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conda create --name perception_models python=3.12
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conda activate perception_models
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# Install PyTorch
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pip install torch==2.5.1 torchvision==0.20.1 torchaudio==2.5.1 xformers --index-url https://download.pytorch.org/whl/cu124
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# We use torchcodec for decoding videos into PyTorch tensors
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pip install torchcodec==0.1 --index-url=https://download.pytorch.org/whl/cu124
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pip install -e .
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```
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This will install an editable version of repo, allowing you to make changes to the code without needing to reinstall the package every time.
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## Image and Textg Feature extraction with a Trained Model
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```python
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import torch
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from core.vision_encoder.factory import create_model_and_transforms, get_tokenizer
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from PIL import Image
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model_name = 'PEv1-L14_336'
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pretrained = 'PATH_TO_PE_Core_L14_336'
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model, _, preprocess = create_model_and_transforms(
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model_name,
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journal={arXiv:xxx.xxxxx},
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year={2025}
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}
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