Unified Multisensory Perception: Weakly-Supervised Audio-Visual Video Parsing

• URL: http://arxiv.org/abs/2007.10558v1
• Date: Tue, 21 Jul 2020 01:53:31 GMT
• Title: Unified Multisensory Perception: Weakly-Supervised Audio-Visual Video Parsing
• Authors: Yapeng Tian, Dingzeyu Li, and Chenliang Xu
• Abstract summary: A new problem, named audio-visual video parsing, aims to parse a video into temporal event segments and label them as audible, visible, or both. We propose a novel hybrid attention network to explore unimodal and cross-modal temporal contexts simultaneously. Experimental results show that the challenging audio-visual video parsing can be achieved even with only video-level weak labels.
• Score: 48.87278703876147
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: In this paper, we introduce a new problem, named audio-visual video parsing, which aims to parse a video into temporal event segments and label them as either audible, visible, or both. Such a problem is essential for a complete understanding of the scene depicted inside a video. To facilitate exploration, we collect a Look, Listen, and Parse (LLP) dataset to investigate audio-visual video parsing in a weakly-supervised manner. This task can be naturally formulated as a Multimodal Multiple Instance Learning (MMIL) problem. Concretely, we propose a novel hybrid attention network to explore unimodal and cross-modal temporal contexts simultaneously. We develop an attentive MMIL pooling method to adaptively explore useful audio and visual content from different temporal extent and modalities. Furthermore, we discover and mitigate modality bias and noisy label issues with an individual-guided learning mechanism and label smoothing technique, respectively. Experimental results show that the challenging audio-visual video parsing can be achieved even with only video-level weak labels. Our proposed framework can effectively leverage unimodal and cross-modal temporal contexts and alleviate modality bias and noisy labels problems.

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