Yifan Wang;Shixuan Feng;Wei Zhang;Kai Li;Fuzheng Yang
{"title":"Fast H.266/VVC Intra Coding by Early Skipping Joint Coding of Chroma Residuals","authors":"Yifan Wang;Shixuan Feng;Wei Zhang;Kai Li;Fuzheng Yang","doi":"10.1109/LSP.2024.3456631","DOIUrl":null,"url":null,"abstract":"Versatile Video Coding (H.266/VVC) significantly enhances compression performance but also increases encoding complexity. Numerous fast intra coding algorithms have been proposed to balance the performance gains with the increased complexity introduced by various advanced tools. However, few fast algorithms are specific to Joint Coding of Chroma Residuals (JCCR), a newly introduced technique that requires additional rate-distortion optimization (RDO) processes. To address this gap, this letter introduces a fast intra coding algorithm that reduces complexity by early skipping unnecessary JCCR. Specifically, we propose skipping JCCR when the correlation between chroma components is low, and we construct a JCCR normalized reconstruction distortion to measure this correlation. The skip conditions are determined by statistical analysis, intelligently reducing the number of RDO processes for chroma components. Experimental results show that, compared to the Fraunhofer Versatile Video Encoder (VVenC), our algorithm achieves encoding time savings of 1.68% and 2.82% under Random Access (RA) and All Intra (AI) settings, respectively, with a performance loss of 0.03% and 0.09% only, demonstrating the effectiveness of our fast algorithm.","PeriodicalId":13154,"journal":{"name":"IEEE Signal Processing Letters","volume":null,"pages":null},"PeriodicalIF":3.2000,"publicationDate":"2024-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"IEEE Signal Processing Letters","FirstCategoryId":"5","ListUrlMain":"https://ieeexplore.ieee.org/document/10670004/","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}
引用次数: 0
Abstract
Versatile Video Coding (H.266/VVC) significantly enhances compression performance but also increases encoding complexity. Numerous fast intra coding algorithms have been proposed to balance the performance gains with the increased complexity introduced by various advanced tools. However, few fast algorithms are specific to Joint Coding of Chroma Residuals (JCCR), a newly introduced technique that requires additional rate-distortion optimization (RDO) processes. To address this gap, this letter introduces a fast intra coding algorithm that reduces complexity by early skipping unnecessary JCCR. Specifically, we propose skipping JCCR when the correlation between chroma components is low, and we construct a JCCR normalized reconstruction distortion to measure this correlation. The skip conditions are determined by statistical analysis, intelligently reducing the number of RDO processes for chroma components. Experimental results show that, compared to the Fraunhofer Versatile Video Encoder (VVenC), our algorithm achieves encoding time savings of 1.68% and 2.82% under Random Access (RA) and All Intra (AI) settings, respectively, with a performance loss of 0.03% and 0.09% only, demonstrating the effectiveness of our fast algorithm.
期刊介绍:
The IEEE Signal Processing Letters is a monthly, archival publication designed to provide rapid dissemination of original, cutting-edge ideas and timely, significant contributions in signal, image, speech, language and audio processing. Papers published in the Letters can be presented within one year of their appearance in signal processing conferences such as ICASSP, GlobalSIP and ICIP, and also in several workshop organized by the Signal Processing Society.