METHODS AND APPARATUS FOR EXPLICIT UPDATES FOR SYMBOL PROBABILITIES OF AN ENTROPY ENCODER OR DECODER

摘要

Methods and apparatus are provided for explicit updates for symbol probabilities of an entropy encoder or decoder. An apparatus includes a video encoder (100) having an entropy encoder (145) for encoding symbols for picture data for at least a portion of a picture. An explicit update function is used to update probabilities of the symbols processed by the entropy encoder. The explicit update function at least one of is truncated at a threshold value and has a varying rate of adaptation.