METHOD FOR ENTROPY-ENCODING SLICE SEGMENT AND APPARATUS THEREFOR, AND METHOD FOR ENTROPY-DECODING SLICE SEGMENT AND APPARATUS THEREFOR

摘要

Provided are entropy encoding and entropy decoding for video encoding and decoding. The video entropy decoding method includes: determining a bin string and a bin index for a maximum coding unit that is obtained from a bitstream; determining a value of a syntax element by comparing the determined bin string with bin strings that is assignable to the syntax element in the bin index; storing context variables for the maximum coding unit when the syntax element is a last syntax element in the maximum coding unit, a dependent slice segment is includable in a picture in which the maximum coding unit is included, and the maximum coding unit is a last maximum coding unit in a slice segment; and restoring symbols of the maximum coding unit by using the determined value of the syntax element.

主权项

1. A video decoding apparatus comprising:
an obtaining unit configured for obtaining, from a bitstream, information about a maximum size of a coding unit and first information indicating whether a dependent slice segment is permitted to be included in a picture; and a decoder configured for determining at least one maximum coding unit included in a first slice segment, based on a maximum coding unit size which is determined by using the information about the maximum size, wherein the obtaining unit is further configured for obtaining, from the bitstream, second information indicating whether a current maximum coding unit is at an end of the first slice segment or not, wherein the decoder is further configured for storing a context variable of the first slice segment if the first information indicates that a dependent slice segment is permitted to be included in the picture and the second information indicates that a current maximum coding unit is at an end of the first slice segment, and wherein the decoder is further configured for decoding a dependent slice segment which is located next to the first slice segment in the picture by using the stored context variable.