Patent ID: 9294770
Filing Date: 2016-03-22
CPC Classification: H04N

Claim Text:
1. A video decoding method for deriving a reconstructed picture, the method comprising: obtaining video information including picture reconstruction information for reconstructing a picture and offset information from a bitstream; reconstructing the picture on a basis of the picture reconstruction information; and applying in-loop filtering to the reconstructed picture, wherein applying the in-loop filtering includes applying a deblocking filtering process to the reconstructed picture, and applying a sample adaptive offset (SAO) process to at least one of a luma sample and a chroma sample after completing the deblocking filtering process, wherein the offset information includes first offset information indicating whether the SAO process is applied to the luma sample and second offset information indicating whether a SAO process is applied to the chroma sample, and wherein the offset information includes band information indicating a starting band of a band group consisting of n (n is integer) bands among 32 bands, the band group is determined based on the starting band, an offset from the SAO process for the luma sample or the chroma sample is applied to at least one of the n bands.