Reduced calculations in determining intra-prediction type...

Details Reduced calculations in determining intra-prediction type... Reduced calculations in determining intra-prediction type...

2008-03-27

2011-10-04

Rahmjoo, Mike (Department: 2624)

Image analysis

Pattern recognition

Feature extraction

C382S176000, C382S173000, C382S190000, C382S232000, C382S302000, C348S701000, C348S607000

Reexamination Certificate

active

08031946

ABSTRACT:
The method, system, and apparatus of source statistics based intra prediction type is disclosed. In one embodiment, a method includes classifying a four-pixel square block in an edge class (e.g., may include a DC edge class, a vertical edge class, a horizontal edge class, a diagonal edge class, and/or a planar edge class) based on an edge classifier, classifying an eight-pixel square block having the four-pixel square block and other four-pixel square blocks as a homogenous class if the four-pixel square block and the other four-pixel square blocks of the eight-pixel square block belong to the edge class, assigning a direction to the edge class of the eight-pixel square block, and determining an optimal intra-prediction type through the classification such that empirical testing of all possible ones of the edge class and the direction is avoided when the homogenous class is identified.

REFERENCES:
patent: 6611608 (2003-08-01), Wu et al.
patent: 7840071 (2010-11-01), Tang et al.

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