CLIP-ViP: Adapting Pre-trained Image-Text Model to Video-Language Representation Alignment

• URL: http://arxiv.org/abs/2209.06430v1
• Date: Wed, 14 Sep 2022 05:47:02 GMT
• Title: CLIP-ViP: Adapting Pre-trained Image-Text Model to Video-Language Representation Alignment
• Authors: Hongwei Xue, Yuchong Sun, Bei Liu, Jianlong Fu, Ruihua Song, Houqiang Li, Jiebo Luo
• Abstract summary: We propose a Omni Crossmodal Learning method equipped with a Video Proxy mechanism on the basis of CLIP, namely CLIP-ViP. Our approach improves the performance of CLIP on video-text retrieval by a large margin. Our model also achieves SOTA results on a variety of datasets, including MSR-VTT, DiDeMo, LSMDC, and ActivityNet.
• Score: 146.3128011522151
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: The pre-trained image-text models, like CLIP, have demonstrated the strong power of vision-language representation learned from a large scale of web-collected image-text data. In light of the well-learned visual features, some existing works transfer image representation to video domain and achieve good results. However, how to utilize image-language pre-trained model (e.g., CLIP) for video-language pre-training (post-pretraining) is still under explored. In this paper, we investigate two questions: 1) what are the factors hindering post-pretraining CLIP to further improve the performance on video-language tasks? and 2) how to mitigate the impact of these factors? Through a series of comparative experiments and analyses, we find that the data scale and domain gap between language sources have great impacts. Motivated by these, we propose a Omnisource Cross-modal Learning method equipped with a Video Proxy mechanism on the basis of CLIP, namely CLIP-ViP. Extensive results show that our approach improves the performance of CLIP on video-text retrieval by a large margin. Our model also achieves SOTA results on a variety of datasets, including MSR-VTT, DiDeMo, LSMDC, and ActivityNet. We release our code and pre-trained CLIP-ViP models at https://github.com/microsoft/XPretrain/tree/main/CLIP-ViP.

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