Learned Video Compression for YUV 4:2:0 Content Using Flow-based Conditional Inter-frame Coding

Yung Han Ho, Chih Hsuan Lin, Peng Yu Chen, Mu Jung Chen, Chih Peng Chang, Wen Hsiao Peng, Hsueh-Ming Hang

研究成果: Conference contribution同行評審

3 引文 斯高帕斯(Scopus)

摘要

This paper proposes a learning-based video compression framework for variable-rate coding on YUV 4:2:0 content. Most existing learning-based video compression models adopt the traditional hybrid-based coding architecture, which involves temporal prediction followed by residual coding. However, recent studies have shown that residual coding is suboptimal from the information-theoretic perspective. In addition, most existing models are optimized with respect to RGB content. Furthermore, they require separate models for variable-rate coding. To address these issues, this work presents an attempt to incorporate the conditional inter-frame coding for YUV 4:2:0 content. We introduce a conditional flow-based inter-frame coder to improve the inter-frame coding efficiency. To adapt our codec to YUV 4:2:0 content, we adopt a simple strategy of using space-to-depth and depth-to-space conversions. Lastly, we employ a rate-adaption net to achieve variable-rate coding without training multiple models. Experimental results show that our model performs better than x265 on UVG and MCL-JCV datasets in terms of PSNR-YUV. However, on the more challenging datasets from ISCAS'22 GC, there is still ample room for improvement. This insufficient performance is due to the lack of inter-frame coding capability at a large GOP size and can be mitigated by increasing the model capacity and applying an error propagationaware training strategy.

原文English
主出版物標題IEEE International Symposium on Circuits and Systems, ISCAS 2022
發行者Institute of Electrical and Electronics Engineers Inc.
頁面829-833
頁數5
ISBN(電子)9781665484855
DOIs
出版狀態Published - 2022
事件2022 IEEE International Symposium on Circuits and Systems, ISCAS 2022 - Austin, United States
持續時間: 27 5月 20221 6月 2022

出版系列

名字Proceedings - IEEE International Symposium on Circuits and Systems
2022-May
ISSN(列印)0271-4310

Conference

Conference2022 IEEE International Symposium on Circuits and Systems, ISCAS 2022
國家/地區United States
城市Austin
期間27/05/221/06/22

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