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arXiv · 2405.12540

Context-Enhanced Video Moment Retrieval with Large Language Models

Weijia Liu·Bo Miao·Jiuxin Cao·Xuelin Zhu·Bo Liu·Mehwish Nasim·Ajmal Mian
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Abstract

Current methods for Video Moment Retrieval (VMR) struggle to align complex situations involving specific environmental details, character descriptions, and action narratives. To tackle this issue, we propose a Large Language Model-guided Moment Retrieval (LMR) approach that employs the extensive knowledge of Large Language Models (LLMs) to improve video context representation as well as cross-modal alignment, facilitating accurate localization of target moments. Specifically, LMR introduces a context enhancement technique with LLMs to generate crucial target-related context semantics. These semantics are integrated with visual features for producing discriminative video representations. Finally, a language-conditioned transformer is designed to decode free-form language queries, on the fly, using aligned video representations for moment retrieval. Extensive experiments demonstrate that LMR achieves state-of-the-art results, outperforming the nearest competitor by up to 3.28\% and 4.06\% on the challenging QVHighlights and Charades-STA benchmarks, respectively. More importantly, the performance gains are significantly higher for localization of complex queries.

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Weijia Liu, Bo Miao, Jiuxin Cao, Xuelin Zhu, Bo Liu, Mehwish Nasim, Ajmal Mian. 2024-05-21. Context-Enhanced Video Moment Retrieval with Large Language Models. https://arxiv.org/abs/2405.12540

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