Butterfly: Multiple Reference Frames Feature Propagation Mechanism for Neural Video Compression

• URL: http://arxiv.org/abs/2303.02959v1
• Date: Mon, 6 Mar 2023 08:19:15 GMT
• Title: Butterfly: Multiple Reference Frames Feature Propagation Mechanism for Neural Video Compression
• Authors: Feng Wang, Haihang Ruan, Fei Xiong, Jiayu Yang, Litian Li and Ronggang Wang
• Abstract summary: We present a more reasonable multi-reference frames propagation mechanism for neural video compression. Our method can significantly outperform the previous state-of-the-art (SOTA) Our neural dataset can achieve -7.6% save on HEVC Class D when compared with our base single-reference frame model.
• Score: 17.073251238499314
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Using more reference frames can significantly improve the compression efficiency in neural video compression. However, in low-latency scenarios, most existing neural video compression frameworks usually use the previous one frame as reference. Or a few frameworks which use the previous multiple frames as reference only adopt a simple multi-reference frames propagation mechanism. In this paper, we present a more reasonable multi-reference frames propagation mechanism for neural video compression, called butterfly multi-reference frame propagation mechanism (Butterfly), which allows a more effective feature fusion of multi-reference frames. By this, we can generate more accurate temporal context conditional prior for Contextual Coding Module. Besides, when the number of decoded frames does not meet the required number of reference frames, we duplicate the nearest reference frame to achieve the requirement, which is better than duplicating the furthest one. Experiment results show that our method can significantly outperform the previous state-of-the-art (SOTA), and our neural codec can achieve -7.6% bitrate save on HEVC Class D dataset when compares with our base single-reference frame model with the same compression configuration.

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