METHOD AND APPARATUS FOR VIDEO ENCODING CAPABLE OF PARALLEL ENTROPY ENCODING OF SUBREGIONS, METHOD AND APPARATUS FOR VIDEO DECODING CAPABLE OF PARALLEL ENTROPY DECODING OF SUBREGIONS

摘要

A video encoding method includes: generating encoding symbols by performing source coding on subregions formed by splitting a picture in a vertical direction, based on blocks having a predetermined size; determining a reference block to be referred to for determining code probability information of a start block in a current subregion, the reference block being determined from among boundary blocks of a neighboring subregion which are encoded before the start block and adjacent to a boundary between the current subregion and the neighboring subregion; performing entropy encoding on blocks of the current subregion, starting from the start block, by using the encoding symbols of the blocks of the current subregion based on the code probability information of the start block determined by using code probability information of the determined reference block; and performing entropy encoding on another subregion in parallel with performing entropy encoding on the current subregion.