CLIP-It! Language-Guided Video Summarization

• URL: http://arxiv.org/abs/2107.00650v1
• Date: Thu, 1 Jul 2021 17:59:27 GMT
• Title: CLIP-It! Language-Guided Video Summarization
• Authors: Medhini Narasimhan, Anna Rohrbach, Trevor Darrell
• Abstract summary: This work introduces CLIP-It, a single framework for addressing both generic and query-focused video summarization. We propose a language-guided multimodal transformer that learns to score frames in a video based on their importance relative to one another. Our model can be extended to the unsupervised setting by training without ground-truth supervision.
• Score: 96.69415453447166
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: A generic video summary is an abridged version of a video that conveys the whole story and features the most important scenes. Yet the importance of scenes in a video is often subjective, and users should have the option of customizing the summary by using natural language to specify what is important to them. Further, existing models for fully automatic generic summarization have not exploited available language models, which can serve as an effective prior for saliency. This work introduces CLIP-It, a single framework for addressing both generic and query-focused video summarization, typically approached separately in the literature. We propose a language-guided multimodal transformer that learns to score frames in a video based on their importance relative to one another and their correlation with a user-defined query (for query-focused summarization) or an automatically generated dense video caption (for generic video summarization). Our model can be extended to the unsupervised setting by training without ground-truth supervision. We outperform baselines and prior work by a significant margin on both standard video summarization datasets (TVSum and SumMe) and a query-focused video summarization dataset (QFVS). Particularly, we achieve large improvements in the transfer setting, attesting to our method's strong generalization capabilities.

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