公开(公告)号：US20160021380A1

公开(公告)日：2016-01-21

申请号：US14336246

申请日：2014-07-21

Applicant: Cisco Technology Inc.

Inventor： Zhi Li ,  Josh Gahm

IPC: H04N19/36 ,  H04N19/86

CPC classification number: H04N19/36 ,  H04N17/004 ,  H04N19/154 ,  H04N19/86

Abstract: In one embodiment, a video processing system includes a processor to read a mapping between a peak signal to noise ratio, PSNR, and a video quality metric, M, for an encoded version of a first video portion encoded at full resolution Rmax, read an up-sampled peak signal to noise ratio, uPSNR(Rx) of an up-sampled decoded video portion deriving from the first video portion being encoded at a resolution Rx, which is less than the full resolution Rmax, yielding an encoded video portion, the encoded video portion being decoded and then up-sampled to the full resolution Rmax; and lookup a value, V′, that maps to uPSNR(Rx) in the mapping, V′ representing a resolution normalized M value of the encoded video portion encoded at the resolution Rx. Related apparatus and methods are also described.

Abstract translation: 在一个实施例中，视频处理系统包括处理器，用于读取在全分辨率Rmax编码的第一视频部分的编码版本的峰值信噪比PSNR和视频质量度量M之间的映射，读取 上采样的峰值信噪比，从第一视频部分导出的上采样解码视频部分的uPSNR（Rx）以小于全分辨率Rmax的分辨率Rx进行编码，产生编码视频部分， 编码视频部分被解码，然后被上采样到全分辨率Rmax; 并且在映射中查找映射到uPSNR（Rx）的值V'，V'表示在分辨率Rx处编码的编码视频部分的分辨率归一化的M值。 还描述了相关装置和方法。

公开(公告)号：US09426478B2

公开(公告)日：2016-08-23

申请号：US14336246

申请日：2014-07-21

Applicant: Cisco Technology Inc.

Inventor： Zhi Li ,  Josh Gahm

IPC: H04N19/00 ,  H04N19/36 ,  H04N19/86 ,  H04N17/00 ,  H04N19/154

CPC classification number: H04N19/36 ,  H04N17/004 ,  H04N19/154 ,  H04N19/86

Abstract: In one embodiment, a video processing system includes a processor to read a mapping between a peak signal to noise ratio, PSNR, and a video quality metric, M, for an encoded version of a first video portion encoded at full resolution Rmax, read an up-sampled peak signal to noise ratio, uPSNR(Rx) of an up-sampled decoded video portion deriving from the first video portion being encoded at a resolution Rx, which is less than the full resolution Rmax, yielding an encoded video portion, the encoded video portion being decoded and then up-sampled to the full resolution Rmax; and lookup a value, V′, that maps to uPSNR(Rx) in the mapping, V′ representing a resolution normalized M value of the encoded video portion encoded at the resolution Rx. Related apparatus and methods are also described.

Abstract translation: 在一个实施例中，视频处理系统包括处理器，用于读取在全分辨率Rmax编码的第一视频部分的编码版本的峰值信噪比PSNR和视频质量度量M之间的映射，读取 上采样的峰值信噪比，从第一视频部分导出的上采样解码视频部分的uPSNR（Rx）以小于全分辨率Rmax的分辨率Rx进行编码，产生编码视频部分， 编码视频部分被解码，然后被上采样到全分辨率Rmax; 并且在映射中查找映射到uPSNR（Rx）的值V'，V'表示在分辨率Rx处编码的编码视频部分的分辨率归一化的M值。 还描述了相关装置和方法。