新一代视频编码HEVC标准 简介

新一代视频编码HEVC标准

HEVC （High Efficiency Video Coding）是即H.264后的视频编码方案，由 ISO/IEC (MPEG) and ITU-T 的 Video Coding Experts Group (VCEG) 联合构建，通过JCT-VC（ Joint Collaborative Team on Video Coding ）运作（类似于H.264中的JVT）。这就是以后的H.265。

参考代码：

类似于H.264中的JM模型，HEVC模型为TMuC（Test Model under Consideration），目前已经到HM7.0版本了：下载地址：https://hevc.hhi.fraunhofer.de/svn/svn_HEVCSoftware/branches/HM-7.0-dev

可以通过TortoiseSVN下载。

目前基本编码工具介绍：

adaptive loop filter (ALF),
extended macroblock size (EMS),
larger transform size (LTS),
internal bit depth increasing (IBDI),
adaptive quantization matrix selection (AQMS),

as well as new coding tools, such as

modified intra prediction,
modified de-block filter,

decoder-side motion vector derivation (DMVD).

Many new features are proposed to meet the requirements:

2-D non-separable adaptive interpolation filter (AIF)
Separable AIF
Directional AIF
"Supermacroblock" structure up to 64x64 with additional transforms
Adaptive prediction error coding (APEC) in spatial and frequency domain
Competition-based scheme for motion vector selection and coding
Mode-dependent KLT
for intra coding.