arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2007.09877cs.CVcs.LGeess.IV
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视频重定位的图神经网络

Graph Neural Network for Video Relocalization

Yuan Zhou, Mingfei Wang, Ruolin Wang, Shuwei Huo

摘要:

在本文中,我们专注于视频重定位任务,它使用查询视频片段作为输入检索语义相关的视频片段在另一个未修剪的长视频。我们发现在视频重定位数据集中,存在帧间特征相似度与视频间特征相似度不存在一致关系的现象,影响了帧间特征融合。针对这一现象,本文将视频特征看作一个图,将查询视频特征和建议视频特征沿时间维连接起来,每个时间步看作一个节点,特征矩阵的每一行看作每个节点的特征。然后,利用图神经网络的强大功能,我们提出了一个多图特征融合模块来融合该图的关系特征。在ActivityNet v1.2数据集和Thumos14数据集上评估我们的方法后,我们发现我们提出的方法优于现有的方法。

英文摘要:

In this paper, we focus on video relocalization task, which uses a query video clip as input to retrieve a semantic relative video clip in another untrimmed long video. we find that in video relocalization datasets, there exists a phenomenon showing that there does not exist consistent relationship between feature similarity by frame and feature similarity by video, which affects the feature fusion among frames. However, existing video relocalization methods do not fully consider it. Taking this phenomenon into account, in this article, we treat video features as a graph by concatenating the query video feature and proposal video feature along time dimension, where each timestep is treated as a node, each row of the feature matrix is treated as feature of each node. Then, with the power of graph neural networks, we propose a Multi-Graph Feature Fusion Module to fuse the relation feature of this graph. After evaluating our method on ActivityNet v1.2 dataset and Thumos14 dataset, we find that our proposed method outperforms the state of art methods.

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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