Probabilistic Update Method for Binary Arithmetic Coding / Decoding and Entropy Coding / Decoding Device Using It

摘要

A probability update method used in CABAC is disclosed. A probability updating method for binary arithmetic decoding is a method for obtaining an autocorrelation value of each bin using values of received bins and calculating at least one scaling factor used for updating the probability of a binary value based on the autocorrelation value And updates the probability used in context-based adaptive binary arithmetic decoding using at least one determined scaling factor.