Exploiting long-term temporal dynamics for video captioning

Yuyu Guo; Jingqiu Zhang; Lianli Gao

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arXiv · 2202.10828

Exploiting long-term temporal dynamics for video captioning

Yuyu Guo·Jingqiu Zhang·Lianli Gao

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Abstract

Automatically describing videos with natural language is a fundamental challenge for computer vision and natural language processing. Recently, progress in this problem has been achieved through two steps: 1) employing 2-D and/or 3-D Convolutional Neural Networks (CNNs) (e.g. VGG, ResNet or C3D) to extract spatial and/or temporal features to encode video contents; and 2) applying Recurrent Neural Networks (RNNs) to generate sentences to describe events in videos. Temporal attention-based model has gained much progress by considering the importance of each video frame. However, for a long video, especially for a video which consists of a set of sub-events, we should discover and leverage the importance of each sub-shot instead of each frame. In this paper, we propose a novel approach, namely temporal and spatial LSTM (TS-LSTM), which systematically exploits spatial and temporal dynamics within video sequences. In TS-LSTM, a temporal pooling LSTM (TP-LSTM) is designed to incorporate both spatial and temporal information to extract long-term temporal dynamics within video sub-shots; and a stacked LSTM is introduced to generate a list of words to describe the video. Experimental results obtained in two public video captioning benchmarks indicate that our TS-LSTM outperforms the state-of-the-art methods.

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BibTeX RIS

Yuyu Guo, Jingqiu Zhang, Lianli Gao. 2022-02-22. Exploiting long-term temporal dynamics for video captioning. https://arxiv.org/abs/2202.10828

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