版权说明:本文档由用户提供并上传,收益归属内容提供方,若内容存在侵权,请进行举报或认领
文档简介
基于统计建模的HEVC码率与失真估计算法摘要:高效视频编码(HEVC)已成为最新的视频编码标准之一,广泛应用于数字媒体的压缩及传输领域。对于视频编码标准而言,码率和失真是两个至关重要的因素。因此,本文基于统计建模理论,提出了一种计算HEVC码率与失真估计的算法。该算法通过对视频序列中像素值的概率分布进行统计,并使用高斯混合模型对这些概率分布进行建模,然后运用算术编码技术得出码率。同时,采用熵编码技术将用于计算失真的误差图像压缩到比特流中,从而得出失真。为了准确地计算码率与失真,本文采用了一种自适应区域块大小选择算法,即通过动态计算区域块大小来进一步提高准确度。实验结果表明,本文提出的算法能够在保证视频质量的前提下减少码率,从而在视觉效果和传输效率方面取得了良好的表现。
关键词:统计建模,高效视频编码,码率,失真,高斯混合模型,算术编码,熵编码,自适应区域块大小选择。
Abstract:HighEfficiencyVideoCoding(HEVC)hasbecomeoneofthelatestvideocodingstandards,widelyusedinthefieldofcompressionandtransmissionofdigitalmedia.Forvideocodingstandards,bitrateanddistortionaretwocrucialfactors.Therefore,thispaperproposesanalgorithmforcalculatingHEVCbitrateanddistortionestimationbasedonstatisticalmodelingtheory.Thisalgorithmstatisticallymodelstheprobabilitydistributionofpixelvaluesinthevideosequence,usesGaussianmixturemodelstomodeltheseprobabilitydistributions,andthenusesarithmeticcodingtechnologytoobtainthebitrate.Atthesametime,entropycodingtechnologyisusedtocompresserrorimagesusedtocalculatedistortionintobitstreams,therebyobtainingdistortion.Inordertoaccuratelycalculatebitrateanddistortion,thispaperadoptsanadaptiveblocksizeselectionalgorithm,thatis,dynamicallycalculatestheblocksizetofurtherimproveaccuracy.Theexperimentalresultsshowthatthealgorithmproposedinthispapercanreducebitratewhileensuringvideoquality,andachievegoodperformanceintermsofvisualeffectsandtransmissionefficiency.
Keywords:statisticalmodeling,highefficiencyvideocoding,bitrate,distortion,Gaussianmixturemodel,arithmeticcoding,entropycoding,adaptiveblocksizeselectionVideocompressionisanessentialtechniqueforreducingthesizeofvideodataandimprovingtransmissionefficiency.However,traditionalvideocompressiontechniquesbasedonfixedblocksizesoftenresultininefficienciesinsomepartsofthevideo.Therefore,thereisaneedfordynamicblocksizeselectionalgorithmstooptimizethecompressionefficiency.
Inthispaper,weproposeablocksizeselectionalgorithmthatusesstatisticalmodelingtodynamicallycalculatetheblocksizesforeachframe.ThealgorithmisbasedontheGaussianmixturemodel(GMM)andusesarithmeticandentropycodingtoencodethevideodata.Theproposedalgorithmalsoadaptstothecomplexityofeachframe,resultinginbettercompressionefficiencywhilemaintainingthevideoquality.
Experimentalresultsshowthatouralgorithmcanreducethebitratewhileensuringthevideoquality.Moreover,ourproposedalgorithmachievesgoodperformanceintermsofvisualeffectsandtransmissionefficiency.
Insummary,ourproposedadaptiveblocksizeselectionalgorithmisapromisingsolutionforimprovingvideocompressionefficiencyandachievingbettervideoquality.Webelievethatourapproachcanbeappliedtovariousvideocodingstandards,suchastheupcominghighefficiencyvideocoding(HEVC)standardAnotheradvantageofourproposedalgorithmisitslowcomplexity.Itcanbeeasilyimplementedandexecutedonhardwarewithlimitedcomputationalcapacity,makingitidealforuseinlow-costdevices.Additionally,ouralgorithmdoesnotrequireanychangestothecompressionstandardordetractfromtheoverallcompressionefficiency.
Onepotentiallimitationofourapproachisitsdependenceonthepixelcharacteristicsofthevideoframes.Thus,inscenarioswherethepixelcharacteristicsvarysignificantlyoverthecourseofthevideo,suchasinsomeaction-packedscenes,ouralgorithmmaynotperformoptimally.However,webelievethatthislimitationcanbeaddressedbyfurtherrefinementofthealgorithm,suchasbyutilizingmachinelearningtechniquestoadapttochangingscenes.
Overall,weareconfidentthatourproposedadaptiveblocksizeselectionalgorithmcancontributetothedevelopmentofbettervideocodingstandardsandenhancetheviewingexperienceforconsumers.Withfurtherresearchanddevelopment,webelievethatourapproachcanbecomeanindustrystandardforvideocompressionandimprovetheefficiencyofvideostreamingandstorageInadditiontoutilizingmachinelearningtechniquesforrefinement,ourproposedadaptiveblocksizeselectionalgorithmcanalsobenefitfromintegrationwithothercompressiontechnologies.Forexample,hybridapproachesthatcombinetheuseofspatialandtemporalredundanciescanfurtherimprovetheefficiencyofvideocompression.
Furthermore,ouralgorithmcanalsobeextendedtosupportthecompressionandstreamingof360-degreevideos,whicharebecomingincreasinglypopularinvirtualrealityapplications.Theuseofadaptiveblocksizescanaidinreducingdistortionandimprovingthevisualqualityofsuchvideos.
Onepotentiallimitationofouralgorithmisthecomputationalcomplexityoftheblocksizeselectionprocess,asitrequiresanalyzingmultipleblocksizesandtheircorrespondingrate-distortiontradeoffs.However,thiscanbeaddressedthroughtheuseofparallelprocessingtechniquesandhardwareacceleration,whicharebecomingmoreaccessiblewithadvancementsintechnology.
Overall,thedevelopmentofeffectivevideocompressionalgorithmsisessentialforenablingtheefficientstorageandtransmissionofvideocontent,particularlyintheeraofhigh-resolutionandhigh-frameratevideo.Webelievethatourproposedadaptiveblocksizeselectionalgorithmisapromisingsteptowardsachieving
温馨提示
- 1. 本站所有资源如无特殊说明,都需要本地电脑安装OFFICE2007和PDF阅读器。图纸软件为CAD,CAXA,PROE,UG,SolidWorks等.压缩文件请下载最新的WinRAR软件解压。
- 2. 本站的文档不包含任何第三方提供的附件图纸等,如果需要附件,请联系上传者。文件的所有权益归上传用户所有。
- 3. 本站RAR压缩包中若带图纸,网页内容里面会有图纸预览,若没有图纸预览就没有图纸。
- 4. 未经权益所有人同意不得将文件中的内容挪作商业或盈利用途。
- 5. 人人文库网仅提供信息存储空间,仅对用户上传内容的表现方式做保护处理,对用户上传分享的文档内容本身不做任何修改或编辑,并不能对任何下载内容负责。
- 6. 下载文件中如有侵权或不适当内容,请与我们联系,我们立即纠正。
- 7. 本站不保证下载资源的准确性、安全性和完整性, 同时也不承担用户因使用这些下载资源对自己和他人造成任何形式的伤害或损失。
最新文档
- 摄像机相关项目建议书
- 带有密封螺旋盖的广口玻璃瓶市场环境与对策分析
- 人音版小学音乐五下说课稿
- 人音版六年级上册音乐计划及进度和教案
- 谈谈信息技术与各学科的整合信息技术论文
- 手动泵项目评价分析报告
- 圆插头连接器项目可行性实施报告
- 日式茶壶市场环境与对策分析
- 捕蝴蝶用网项目可行性实施报告
- 国开2024年《中级财务会计#》形考作业1-4答案
- 公司采购物品审批单
- 看花识草辨药材(山东联盟)智慧树知到答案章节测试2023年山东中医药大学
- 蜗轮蜗杆的计算
- 卫生专业技术资格任职聘用证明表
- 统一用户管理平台系统操作手册
- 悬臂式挡墙施工方案
- JJG 626-2003球轴承轴向游隙测量仪
- GB/T 6495.4-1996晶体硅光伏器件的I-V实测特性的温度和辐照度修正方法
- IT外包服务网络安全管理办法v21
- 2023年同等学力英语真题解析
- 2023年最新电大高等数学基础形成性考核手册答案含题目
评论
0/150
提交评论