| 摘要 |
A context-based adaptive binary arithmetic coding, decoding method and apparatus thereof are provided to improve the performance of context-based binary arithmetic coding by performing binary arithmetic coding according to subdivided context. A significance coefficient, not 0, among coefficients provided in a current residual block is determined, and the significance coefficient is set as 1 to generate a significance map indicating the position of the significance coefficient in the current residual block(910). Context to be used for coding the significance map of the current residual block is determined according to whether or not a coefficient corresponding to at least one or more previous residual blocks which have been coded before the current residual block is a significance coefficient(920). Binary values constituting the significance map of the current residual block are binary-arithmetic- coded by using a probability value of an MPS(Most Probable Symbol) and that of an LPS(Least Probable Symbol) according to a selected context(930). |
