基于下采样的HEVC视频一致性通过率控制

Yu-Yao Shen, Chih-Hung Kuo
{"title":"基于下采样的HEVC视频一致性通过率控制","authors":"Yu-Yao Shen, Chih-Hung Kuo","doi":"10.1109/ICME.2018.8486544","DOIUrl":null,"url":null,"abstract":"Rate control plays an important role in video coding and streaming applications with bandwidth constraints. While most researches are proposed to improve the coding efficiency’ the fluctuation of video quality is seldom considered. Many rate control schemes suffer from unreliable initialization of coding parameters, which leads to seriously inconsistent quality at the beginning of a video. Besides, the hierarchical structure for frame references introduces more quality fluctuations, although it improves the coding efficiency significantly. This paper presents a two pass rate control method that aims for a consistent visual quality. The video is downsampled by four times, and then encoded for the first pass. A fixed Lagrange multiplier $(\\lambda)$ is derived from the information recorded in the first pass, and then applied for all frames in the second coding pass. A QP adjustment policy is adopted to maintain a consistent quality and a constant bitrate. Experimental results show that the proposed rate control method can reduce the fluctuation of video quality to be averagely 94.63% less than that encoded by the HEVC Test Model (HM16.9).","PeriodicalId":426613,"journal":{"name":"2018 IEEE International Conference on Multimedia and Expo (ICME)","volume":"60 30 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"4","resultStr":"{\"title\":\"Two Pass Rate Control for Consistent Quality Based on Down-Sampling Video in HEVC\",\"authors\":\"Yu-Yao Shen, Chih-Hung Kuo\",\"doi\":\"10.1109/ICME.2018.8486544\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Rate control plays an important role in video coding and streaming applications with bandwidth constraints. While most researches are proposed to improve the coding efficiency’ the fluctuation of video quality is seldom considered. Many rate control schemes suffer from unreliable initialization of coding parameters, which leads to seriously inconsistent quality at the beginning of a video. Besides, the hierarchical structure for frame references introduces more quality fluctuations, although it improves the coding efficiency significantly. This paper presents a two pass rate control method that aims for a consistent visual quality. The video is downsampled by four times, and then encoded for the first pass. A fixed Lagrange multiplier $(\\\\lambda)$ is derived from the information recorded in the first pass, and then applied for all frames in the second coding pass. A QP adjustment policy is adopted to maintain a consistent quality and a constant bitrate. Experimental results show that the proposed rate control method can reduce the fluctuation of video quality to be averagely 94.63% less than that encoded by the HEVC Test Model (HM16.9).\",\"PeriodicalId\":426613,\"journal\":{\"name\":\"2018 IEEE International Conference on Multimedia and Expo (ICME)\",\"volume\":\"60 30 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2018-07-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"4\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"2018 IEEE International Conference on Multimedia and Expo (ICME)\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/ICME.2018.8486544\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"2018 IEEE International Conference on Multimedia and Expo (ICME)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ICME.2018.8486544","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 4

摘要

速率控制在带宽受限的视频编码和流媒体应用中起着重要的作用。大多数研究都是为了提高编码效率而提出的,但很少考虑到视频质量的波动。许多码率控制方案存在编码参数初始化不可靠的问题,导致视频开始时质量严重不一致。此外,帧参考的分层结构虽然显著提高了编码效率,但也带来了更多的质量波动。本文提出了一种双通过率控制方法,以获得一致的视觉质量。视频被下行采样四次,然后对第一遍进行编码。一个固定的拉格朗日乘法器$(\lambda)$是从第一次编码中记录的信息派生出来的,然后应用于第二次编码中的所有帧。采用QP调整策略以保持一致的质量和恒定的比特率。实验结果表明,所提出的速率控制方法能使视频质量波动比HEVC测试模型(HM16.9)编码的视频质量波动平均小94.63%。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Two Pass Rate Control for Consistent Quality Based on Down-Sampling Video in HEVC
Rate control plays an important role in video coding and streaming applications with bandwidth constraints. While most researches are proposed to improve the coding efficiency’ the fluctuation of video quality is seldom considered. Many rate control schemes suffer from unreliable initialization of coding parameters, which leads to seriously inconsistent quality at the beginning of a video. Besides, the hierarchical structure for frame references introduces more quality fluctuations, although it improves the coding efficiency significantly. This paper presents a two pass rate control method that aims for a consistent visual quality. The video is downsampled by four times, and then encoded for the first pass. A fixed Lagrange multiplier $(\lambda)$ is derived from the information recorded in the first pass, and then applied for all frames in the second coding pass. A QP adjustment policy is adopted to maintain a consistent quality and a constant bitrate. Experimental results show that the proposed rate control method can reduce the fluctuation of video quality to be averagely 94.63% less than that encoded by the HEVC Test Model (HM16.9).
求助全文
通过发布文献求助,成功后即可免费获取论文全文。 去求助
来源期刊
自引率
0.00%
发文量
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:604180095
Book学术官方微信