--- license: apache-2.0 --- # Chinese-CLIP-ViT-Base-Patch16 ## Introduction This is the base-version of the Chinese CLIP, with ViT-B/16 as the image encoder and RoBERTa-wwm-base as the text encoder. Chinese CLIP is a simple implementation of CLIP on a large-scale dataset of around 200 million Chinese image-text pairs. For more details, please refer to our technical report https://arxiv.org/abs/2211.01335 and our official github repo https://github.com/OFA-Sys/Chinese-CLIP ## Use with the official API We provide a simple code snippet to show how to use the API for Chinese-CLIP. For starters, please install cn_clip: ```bash # to install the latest stable release pip install cn_clip # or install from source code cd Chinese-CLIP pip install -e . ``` After installation, use Chinese CLIP as shown below: ```python import torch from PIL import Image import cn_clip.clip as clip from cn_clip.clip import load_from_name, available_models print("Available models:", available_models()) # Available models: ['ViT-B-16', 'ViT-L-14', 'ViT-L-14-336', 'ViT-H-14', 'RN50'] device = "cuda" if torch.cuda.is_available() else "cpu" model, preprocess = load_from_name("ViT-B-16", device=device, download_root='./') model.eval() image = preprocess(Image.open("examples/pokemon.jpeg")).unsqueeze(0).to(device) text = clip.tokenize(["杰尼龟", "妙蛙种子", "小火龙", "皮卡丘"]).to(device) with torch.no_grad(): image_features = model.encode_image(image) text_features = model.encode_text(text) # Normalize the features. Please use the normalized features for downstream tasks. image_features /= image_features.norm(dim=-1, keepdim=True) text_features /= text_features.norm(dim=-1, keepdim=True) logits_per_image, logits_per_text = model.get_similarity(image, text) probs = logits_per_image.softmax(dim=-1).cpu().numpy() print("Label probs:", probs) # [[1.268734e-03 5.436878e-02 6.795761e-04 9.436829e-01]] ``` However, if you are not satisfied with only using the API, feel free to check our github repo https://github.com/OFA-Sys/Chinese-CLIP for more details about training and inference.

## Results **MUGE Text-to-Image Retrieval**:
SetupZero-shotFinetune
MetricR@1R@5R@10MRR@1R@5R@10MR
Wukong42.769.078.063.252.777.985.672.1
R2D249.575.783.269.560.182.989.477.5
CN-CLIP63.084.189.278.868.988.793.183.6

**Flickr30K-CN Retrieval**:
TaskText-to-ImageImage-to-Text
SetupZero-shotFinetuneZero-shotFinetune
MetricR@1R@5R@10R@1R@5R@10R@1R@5R@10R@1R@5R@10
Wukong51.778.986.377.494.597.076.194.897.592.799.199.6
R2D260.986.892.784.496.798.477.696.798.995.699.8100.0
CN-CLIP71.291.495.583.896.998.681.697.598.895.399.7100.0

**COCO-CN Retrieval**:
TaskText-to-ImageImage-to-Text
SetupZero-shotFinetuneZero-shotFinetune
MetricR@1R@5R@10R@1R@5R@10R@1R@5R@10R@1R@5R@10
Wukong53.480.290.174.094.498.155.281.090.673.394.098.0
R2D256.485.093.179.196.598.963.389.395.779.397.198.7
CN-CLIP69.289.996.181.596.999.163.086.692.983.597.399.2

**Zero-shot Image Classification**:
TaskCIFAR10CIFAR100DTDEuroSATFERFGVCKITTIMNISTPCVOC
GIT88.561.142.943.441.46.722.168.950.080.2
ALIGN94.976.866.152.150.825.041.274.055.283.0
CLIP94.977.056.063.048.333.311.579.062.384.0
Wukong95.477.140.950.3------
CN-CLIP96.079.751.252.055.126.249.979.463.584.9

## Citation If you find Chinese CLIP helpful, feel free to cite our paper. Thanks for your support! ``` @article{chinese-clip, title={Chinese CLIP: Contrastive Vision-Language Pretraining in Chinese}, author={Yang, An and Pan, Junshu and Lin, Junyang and Men, Rui and Zhang, Yichang and Zhou, Jingren and Zhou, Chang}, journal={arXiv preprint arXiv:2211.01335}, year={2022} } ```