Patent ID: 9485521
Filing Date: 2016-11-01
CPC Classification: H04N

Claim Text:
1. A video decoding method by a video decoding apparatus, comprising: receiving video information including picture reconstruction information for reconstructing a picture and offset information for sample adaptive offset (SAO) process; reconstructing the picture on the basis of the picture reconstruction information; and applying an in-loop filtering process to the reconstructed picture, wherein applying the in-loop filtering process includes wherein the offset information includes offset type information indicating whether an edge offset type is applied to the sample, or a band offset type is applied to the sample, wherein when the offset type information indicating the band offset type is applied to the sample, the offset information includes an explicit band information indicating one of 32 bands as a starting band of a band group consisting of n bands among the 32 bands, the band group is determined based on the starting band, and an offset corresponding a band among the n bands is applied to the sample, wherein n is an integer.