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| Presentation | 2022-02-22 10:15 Contrastive Self-Supervised Learning Framework for Unsupervised Video Summarization Xianliang Zhang, Li Tao (UTokyo), Xueting Wang (CyberAgent AI Lab), Toshihiko Yamasaki (UTokyo)  ITS2021-44 IE2021-53 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | The rapid growth of video data aggravates the effort by viewers in exploring informative data. This paper presents a framework based on contrastive learning for unsupervised video summarization to help people to extract important parts in those videos. In contrastive learning, anchor-positive and anchor-negative pairs are usually employed to fulfill learning deep representation from the anchor. In our study, a positive sample by reversing the anchor video is introduced, whose summarization should also be a reversed one. Meanwhile, by destroying temporal relations in the anchor video, the intra-negative video is generated, whose summarization should be quite different from the anchor. Finally, we design our framework to explore the similarity and differences of such samples with the anchor by two proposed summary losses. Experimental evaluations on two benchmark datasets show that our proposed framework surpasses the state-of-the-art unsupervised methods in terms of F-score and correlation coefficients. Without using any annotation, our method can even outperform many supervised methods. We also show that our framework can further enhance the summarization performance by training on large-scale external data that are collected from social networks. Quantitative experiments also show that our method can be integrated into other models with better performance and quicker convergence, indicating the generality of the algorithm. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | contrastive learning / video summarization / large-scale external data / quicker convergence / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 121, no. 374, IE2021-53, pp. 115-120, Feb. 2022. | |
| Paper # | IE2021-53 | |
| Date of Issue | 2022-02-14 (ITS, IE) | |
| ISSN | Online edition: ISSN 2432-6380 | |
| Copyright and reproduction |
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) | |
| Download PDF | ITS2021-44 IE2021-53 |
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| Conference Information | |
| Committee | IE ITS ITE-AIT ITE-ME ITE-MMS |
| Conference Date | 2022-02-21 - 2022-02-22 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Image Processing, etc. |
| Paper Information | |
| Registration To | IE |
| Conference Code | 2022-02-IE-ITS-AIT-ME-MMS |
| Language | English |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Contrastive Self-Supervised Learning Framework for Unsupervised Video Summarization |
| Sub Title (in English) | |
| Keyword(1) | contrastive learning |
| Keyword(2) | video summarization |
| Keyword(3) | large-scale external data |
| Keyword(4) | quicker convergence |
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| 1st Author's Name | Xianliang Zhang |
| 1st Author's Affiliation | The University of Tokyo (UTokyo) |
| 2nd Author's Name | Li Tao |
| 2nd Author's Affiliation | The University of Tokyo (UTokyo) |
| 3rd Author's Name | Xueting Wang |
| 3rd Author's Affiliation | CyberAgent AI Lab (CyberAgent AI Lab) |
| 4th Author's Name | Toshihiko Yamasaki |
| 4th Author's Affiliation | The University of Tokyo (UTokyo) |
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| Speaker | Author-1 |
| Date Time | 2022-02-22 10:15:00 |
| Presentation Time | 15 minutes |
| Registration for | IE |
| Paper # | ITS2021-44, IE2021-53 |
| Volume (vol) | vol.121 |
| Number (no) | no.373(ITS), no.374(IE) |
| Page | pp.115-120 |
| #Pages | 6 |
| Date of Issue | 2022-02-14 (ITS, IE) |
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