METHOD AND APPARATUS FOR VIDEO ENCODING WITH ADJUSTING OFFSETS BASED ON PIXEL CLASSIFICATION, METHOD AND APPARATUS FOR VIDEO DECODING WITH ADJUSTING OFFSETS BASED ON PIXEL CLASSIFICATION

摘要

The present invention proposes a video encoding method, an apparatus therefor, a video decoding method and an apparatus therefor, which generate a restored image having a minimum error with respect to an original image. The video decoding method includes: parsing the offset merge information of a current block from a received bitstream; restoring an offset type and offset values among the offset parameters of the current block based on the offset merge information; determining an edge class or a pixel value band of a restored pixel based on an edge type or a pixel value band type of the current block, which the offset type indicates; and determining an offset value corresponding to the edge class or the pixel value band of the restored pixel from the offset values and adjusting a pixel value of the restored pixel according to the determined offset value.