Patent · US Active

Direction detection algorithms for H.264/AVC intra prediction

US8204114B2 · kind B2 · utility

21Cited by

4References

17Claims

0Family size

Assignee

NATIONAL CHENG KUNG UNIVERSITY · TW

Inventors

Jhing-Fa Wang · Tainan, TW
Wei-Guang Lin · Tainan, TW
An-Chao Tsai · Tainan, TW

Key dates

Filing date	Jul 3, 2008
Grant date	Jun 19, 2012
Priority date	—
Expiry date	Apr 19, 2031

Classification

Technology area (CPC H)Electricity
CPC primaryH04N19/61
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

A block intra prediction direction detection algorithm comprises acts of dividing a block, finding directions from edge assent rules, determining a main edge of the block, selecting prediction modes from the main edge, choosing base prediction modes and using all unique selected and base prediction modes in intra prediction. The algorithms comprise a 4×4 block intra prediction direction detection algorithm, a 16×16 luminance block intra prediction direction detection algorithm and an 8×8 chrominance block intra prediction direction detection algorithm.

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