COHERENCE GROUPS: REGION DESCRIPTORS FOR LOW BIT RATE ENCODING,申请号US201313913169-传众专利搜索

COHERENCE GROUPS: REGION DESCRIPTORS FOR LOW BIT RATE ENCODING

申请公布号：US2014362919(A1)

申请号：US201313913169

申请日期：2013.06.07

申请公布日期：2014.12.11

申请人：

Apple Inc.

发明人：Zhou Xiaosong;Wu Hsi-Jung;Chung Chris Y.;Keinath Albert E.;Conrad David R.;Zheng Yunfei;Zhang Dazhong;Kim Jae Hoon

分类号：H04N19/583

主分类号：H04N19/583

地址：Cupertino CA US

摘要：The invention is directed to an efficient way for encoding and decoding video. Embodiments include identifying different coding units that share a similar characteristic. The characteristic can be, for example: quantization values, modes, block sizes, color space, motion vectors, depth, facial and non-facial regions, and filter values. An encoder may then group the units together as a coherence group. An encoder may similarly create a table or other data structure of the coding units. An encoder may then extract the commonly repeating characteristic or attribute from the coding units. The encoder may transmit the coherence groups along with the data structure, and other coding units which were not part of a coherence group. The decoder may receive the data, and utilize the shared characteristic by storing locally in cache, for faster repeated decoding, and decode the coherence group together.

主权项：1. A coding method, comprising: parsing a source frame into a plurality of coding units, coding the coding units according to motion compensated predictive coding, searching among the coded coding units for common characteristics, assigning select coded coding units to a coherence group according to identified common characteristics, transmitting, in a channel, data representing the coherence group that includes: a map identifying the coding units that are assigned to the coherence group,data representing the common characteristics of the coding units assigned to the coherence group, and transmitting, in the channel, remaining data of the coded coding units.