Patent · US Active

Indicating intra-prediction mode selection for video coding using CABAC

US8913662B2 · kind B2 · utility

13Cited by

4References

40Claims

0Family size

Assignee

QUALCOMM Incorporated · US

Inventors

Marta Karczewicz · San Diego, US
Xianglin Wang · Santa Ana, US
Wei-Jung Chien · San Diego, US

Key dates

Filing date	Jan 4, 2012
Grant date	Dec 16, 2014
Priority date	—
Expiry date	Nov 14, 2032

Classification

Technology area (CPC H)Electricity
CPC primaryH04N19/463
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

For a block of video data, a video encoder can signal to a video decoder, using a context-based adaptive binary arithmetic coding (CABAC) process, a selected intra-prediction mode using a codeword that is mapped to a modified intra-prediction mode index. The video decoder can perform a context-based adaptive binary arithmetic coding (CABAC) process to determine the codeword signaled by the video encoder, determine the modified intra-prediction mode index corresponding to the codeword, determine most probable modes based on a context, map the modified intra-prediction mode index to an intra-prediction mode index by comparing the modified intra-prediction mode index to the mode indexes of the most probable modes, and determine the selected intra-prediction mode used to encode the block of video data based on the intra-prediction mode index.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.