METHOD AND DEVICE OF ADAPTIVE CHOICE OF CONTEXT MODEL FOR ENTROPY ENCODING Russian patent published in 2008 - IPC H04N7/50 G06T7/20 

FIELD: physics, video technics.

SUBSTANCE: invention concerns video signal encoding/decoding, particularly adaptive choice of context model for entropy encoding, and video decoder. The invention claims a method of residual prediction flag encoding, indicating prediction of residual data for enhanced layer unit of multilayer video signal, based on residual data from bottom layer unit correlating to residual data from enhanced layer unit. The method involves stages of residual data energy calculation for bottom layer unit, determination of residual prediction flag encoding method according to the energy, and residual prediction flag encoding by the determined encoding method.

EFFECT: method and device for efficient flag compression.

66 cl, 17 dwg