arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2102.00831cs.CVcs.AI
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基于语义匹配网络的视频描述

Semantic Grouping Network for Video Captioning

Korea Advanced Institute of Science and Technology (KAIST)(韩国科学技术院)

Hobin Ryu, Sunghun Kang, Haeyong Kang, Chang D. Yoo

摘要:

本文考虑了一个视频字幕生成网络,称为语义网络(SGN),它试图(1)分组视频帧与部分解码字幕的判别词短语,然后(2)解码这些语义对齐的组在预测下一个词。由于连续帧不太可能提供唯一信息,因此现有方法集中于仅基于输入视频来丢弃或合并重复信息。SGN学习一种算法来捕获部分解码的字幕的最有区别的单词短语,以及将每个短语与相关视频帧相关联的映射-建立这种映射允许语义相关的帧被聚类,这减少了冗余。与现有方法相比,来自解码单词的连续反馈使得SGN能够动态地更新适应于部分解码字幕的视频表示。此外,提出了一种对比注意力损失,以促进准确的对齐之间的单词短语和视频帧,而无需手动注释。SGN通过在MSVD和MSR-VTT数据集上的CIDEr-D评分中分别以2.1%p和2.4%p的幅度优于亚军方法来实现最先进的性能。大量的实验证明了SGN的有效性和可解释性。

英文摘要:

This paper considers a video caption generating network referred to as Semantic Grouping Network (SGN) that attempts (1) to group video frames with discriminating word phrases of partially decoded caption and then (2) to decode those semantically aligned groups in predicting the next word. As consecutive frames are not likely to provide unique information, prior methods have focused on discarding or merging repetitive information based only on the input video. The SGN learns an algorithm to capture the most discriminating word phrases of the partially decoded caption and a mapping that associates each phrase to the relevant video frames - establishing this mapping allows semantically related frames to be clustered, which reduces redundancy. In contrast to the prior methods, the continuous feedback from decoded words enables the SGN to dynamically update the video representation that adapts to the partially decoded caption. Furthermore, a contrastive attention loss is proposed to facilitate accurate alignment between a word phrase and video frames without manual annotations. The SGN achieves state-of-the-art performances by outperforming runner-up methods by a margin of 2.1%p and 2.4%p in a CIDEr-D score on MSVD and MSR-VTT datasets, respectively. Extensive experiments demonstrate the effectiveness and interpretability of the SGN.

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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