VIDEO ENCODING METHOD USING OFFSET ADJUSTMENTS ACCORDING TO PIXEL CLASSIFICATION AND APPARATUS THEREFOR, VIDEO DECODING METHOD AND APPARATUS THEREFOR

摘要

A video encoding method and apparatus and video decoding method and apparatus generate a restored image having a minimum error with respect to an original image based on offset merge information indicating whether offset parameters of a current block and at least one neighboring block from among blocks of video are identical.

主权项

1. A video decoding method comprising:
parsing, from a bitstream, offset merge information indicating whether a sample offset parameter of a current block is derived from a sample offset parameter of a neighboring block; when the offset merge information indicates that the sample offset parameter of the current block is derived from the sample offset parameter of the neighboring block, determining the sample offset parameter of the current block using the sample offset parameter of the neighboring block; when the offset merge information indicates that the sample offset parameter of the current block is not derived from the sample offset parameter of the neighboring block, obtaining the sample offset parameter of the current block from the bitstream; and compensating for a sample value of a restored pixel by using offset value included in the sample offset parameter of the current block.