HierSum: A Global and Local Attention Mechanism for Video Summarization

• URL: http://arxiv.org/abs/2504.18689v1
• Date: Fri, 25 Apr 2025 20:30:30 GMT
• Title: HierSum: A Global and Local Attention Mechanism for Video Summarization
• Authors: Apoorva Beedu, Irfan Essa,
• Abstract summary: We focus on summarizing instructional videos and propose a method for breaking down a video into meaningful segments.<n>HierSum integrates fine-grained local cues from subtitles with global contextual information provided by video-level instructions.<n>We show that HierSum consistently outperforms existing methods in key metrics such as F1-score and rank correlation.
• Score: 14.88934924520362
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Video summarization creates an abridged version (i.e., a summary) that provides a quick overview of the video while retaining pertinent information. In this work, we focus on summarizing instructional videos and propose a method for breaking down a video into meaningful segments, each corresponding to essential steps in the video. We propose \textbf{HierSum}, a hierarchical approach that integrates fine-grained local cues from subtitles with global contextual information provided by video-level instructions. Our approach utilizes the ``most replayed" statistic as a supervisory signal to identify critical segments, thereby improving the effectiveness of the summary. We evaluate on benchmark datasets such as TVSum, BLiSS, Mr.HiSum, and the WikiHow test set, and show that HierSum consistently outperforms existing methods in key metrics such as F1-score and rank correlation. We also curate a new multi-modal dataset using WikiHow and EHow videos and associated articles containing step-by-step instructions. Through extensive ablation studies, we demonstrate that training on this dataset significantly enhances summarization on the target datasets.

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