arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2409.06299cs.CVcs.AI
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通过基于事件的分层记忆增强长视频理解

Enhancing Long Video Understanding via Hierarchical Event-Based Memory

Tencent(腾讯)

Dingxin Cheng, Mingda Li, Jingyu Liu, Yongxin Guo, Bin Jiang, Qingbin Liu, Xi Chen, Bo Zhao

AI总结:

针对长视频中粗粒度压缩导致的事件混杂与信息冗余问题,本文提出HEM-LLM,通过自适应事件分割、事件内记忆建模及前序事件信息注入增强长程依赖,并在多任务上达到SOTA。

摘要:

近来,将视觉基础模型集成到大型语言模型(LLM)中以构建视频理解系统已引起广泛关注。大多数现有模型会压缩整个视频中的多样语义信息,并将其输入LLM以进行内容理解。尽管该方法在短视频理解方面表现出色,但在长视频中,由于压缩较为粗糙,可能导致多个事件信息混杂在一起,从而造成信息冗余。因此,关键事件的语义可能会被淹没在海量信息中,妨碍模型的理解能力。为解决这一问题,我们提出了一种基于事件的分层记忆增强LLM(Hierarchical Event-based Memory-enhanced LLM,HEM-LLM),以更好地理解长视频。首先,我们设计了一种新颖的自适应序列分割方案,用于划分长视频中的多个事件。通过这种方式,我们可以对每个事件进行单独的记忆建模,建立事件内的上下文联系,从而减少信息冗余。其次,在对当前事件进行建模时,我们压缩并注入前一事件的信息,以增强视频中长期的事件间依赖关系。最后,我们在多种视频理解任务上进行了大量实验,结果表明我们的模型取得了最先进的性能。

英文摘要:

Recently, integrating visual foundation models into large language models (LLMs) to form video understanding systems has attracted widespread attention. Most of the existing models compress diverse semantic information within the whole video and feed it into LLMs for content comprehension. While this method excels in short video understanding, it may result in a blend of multiple event information in long videos due to coarse compression, which causes information redundancy. Consequently, the semantics of key events might be obscured within the vast information that hinders the model's understanding capabilities. To address this issue, we propose a Hierarchical Event-based Memory-enhanced LLM (HEM-LLM) for better understanding of long videos. Firstly, we design a novel adaptive sequence segmentation scheme to divide multiple events within long videos. In this way, we can perform individual memory modeling for each event to establish intra-event contextual connections, thereby reducing information redundancy. Secondly, while modeling current event, we compress and inject the information of the previous event to enhance the long-term inter-event dependencies in videos. Finally, we perform extensive experiments on various video understanding tasks and the results show that our model achieves state-of-the-art performances.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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