Complexity-scalable intra-frame prediction technique

Details Complexity-scalable intra-frame prediction technique Complexity-scalable intra-frame prediction technique

2007-01-30

2007-01-30

Philippe, Gims (Department: 2621)

Pulse or digital communications

Bandwidth reduction or expansion

Television or motion video signal

C382S236000

Reexamination Certificate

active

10427818

ABSTRACT:
This invention is a method of encoding intra frames when encoding a motion picture. A set of intra frame prediction modes includes a low-complexity subset. A probability table relates the prediction mode of adjacent sub-blocks to the prediction mode of the current sub-block. For each combination of adjacent sub-blocks, the probability table includes a list of prediction modes in order of expected occurrence. The probability table is adjusted so that each list for prediction modes within the low-complexity subset include initial prediction modes of the low-complexity subset. Individual sub-blocks of intra frames are predictively coded in a low-complexity encoding the using the low-complexity subset or in a high-complexity encoding using any prediction mode. This permits a low-complexity decoder responsive to only the low-complexity subset.

REFERENCES:
patent: 5677735 (1997-10-01), Ueno et al.
patent: 6556718 (2003-04-01), Piccinelli et al.
patent: 6765964 (2004-07-01), Conklin

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