METHOD AND APPARATUS FOR ENTROPY CODING VIDEO AND METHOD AND APPARATUS FOR ENTROPY DECODING VIDEO

摘要

Provided are entropy decoding and encoding methods of a video. The entropy decoding method includes obtaining a transformation unit significant coefficient flag indicating whether a non-zero transformation coefficient exists in the transformation unit, from a bitstream, determining a context model for arithmetically 5 decoding the transformation unit significant coefficient flag, based on the transformation depth of the transformation unit and arithmetically decoding the transformation unit significant coefficient flag based on the determined context model.

主权项

1. A decoding method of a video, the method comprising:
obtaining a split transformation flag used to determine a transformation unit for an inverse transformation process, from a bitstream; obtaining at least one transformation unit from a coding unit based on the split transformation flag; determining a context model for arithmetic decoding a transformation unit significant coefficient flag indicating whether a non-zero transformation coefficient exists in the transformation unit, based on a transformation depth of the transformation unit; and arithmetic decoding the transformation unit significant coefficient flag based on the determined context model, wherein the transformation depth of the transformation unit indicates a number of times the coding unit is split, and wherein the context model is determined according to whether a value of the transformation depth is equal to 0 or not.