Straight to the Point : Fast-forwarding Videos via Reinforcement Learning Using Textual Data

De Souza Ramos, Washington and Silva, Michel M. and Araujo, Edson R. and Soriano Marcolino, Leandro and Nascimento, Erickson R. (2020) Straight to the Point : Fast-forwarding Videos via Reinforcement Learning Using Textual Data. In: Proceedings of the 2020 IEEE Conference on Computer Vision and Pattern Recognition, CVPR 2020 :. IEEE, pp. 10928-10937. ISBN 9781728171685

Text (2020_cvpr_ramos)
2020_cvpr_ramos_arxiv.pdf - Accepted Version
Available under License Creative Commons Attribution-NonCommercial.
Download (10MB)

Abstract

The rapid increase in the amount of published visual data and the limited time of users bring the demand for processing untrimmed videos to produce shorter versions that convey the same information. Despite the remarkable progress that has been made by summarization methods, most of them can only select a few frames or skims, which creates visual gaps and breaks the video context. In this paper, we present a novel methodology based on a reinforcement learning formulation to accelerate instructional videos. Our approach can adaptively select frames that are not relevant to convey the information without creating gaps in the final video. Our agent is textually and visually oriented to select which frames to remove to shrink the input video. Additionally, we propose a novel network, called Visually-guided Document Attention Network (VDAN), able to generate a highly discriminative embedding space to represent both textual and visual data. Our experiments show that our method achieves the best performance in terms of F1 Score and coverage at the video segment level.