ICS：33.160 CCS：M61 世界超高清视频产业联盟标准 T/UWA005.1-2022 2022-02-10发布 2022-02-10实施 世界超高清视频产业联盟高动态范围（HDR）视频技术第1部分:元数据及适配 HighDynamicRangeVideoTechnologyPart1:MetadataandProcessing （V1.2征求意见稿V1.0） 全国团体标准信息平台 全国团体标准信息平台 T/UWA005.1-2022 I目次 前言...................................................................................................................................................................II 引言.................................................................................................................................................................III 1范围.....................................................................................................................................................................1 2规范性引用文件.................................................................................................................................................1 3术语和定义.........................................................................................................................................................1 4缩略语.................................................................................................................................................................2 5符号与运算.........................................................................................................................................................2 6端到端系统要求.................................................................................................................................................8 7元数据.................................................................................................................................................................9 8元数据封装.......................................................................................................................................................16 9HDR动态元数据显示适配................................................................................................................................19 10HDR（PQ和HLG）的SDR动态元数据显示适配...........................................................................................37 11HLG显示适配..................................................................................................................................................41 附录A（资料性）动态元数据提取方法...............................................................................................45 A.1概述.............................................................................................................................................................45 A.2HDRVivid信号预处理过程......................................................................................................................45 A.3动态元数据minimum_maxrgb_pq[w]和maximum_maxrgb_pq[w]的计算..............................................45 A.4动态元数据average_maxrgb_pq[w]的计算............................................................................................46 A.5动态元数据variance_maxrgb_pq[w]的计算..........................................................................................46 A.6基础曲线参数元数据生成过程.................................................................................................................46 A.7三次样条参数元数据生成过程.................................................................................................................55 A.8饱和度调整参数元数据生成过程.......................................................................................................57 A.9动态元数据的时域滤波...........................................................................................................................58 A.10动态元数据的时域质量环内调节反馈.................................................................................................59 附录B（资料性）元数据在HEVC/VVC码流中的封装........................................................................61 B.1概述.............................................................................................................................................................61 B.2语义..............................