- METHOD AND APPARATUS OF IN-LOOP FILTERING BY ADAPTIVE BAND OFFSET BANDS AND APPPARATUS FOR DECODING AND ENCODING BY ADAPTIVE BAND OFFSET BANDS

摘要

The present invention discloses an in-loop filtering method and apparatus using an adaptive band offset period, and an encoding and decoding apparatus using an adaptive band offset period. The in-loop filtering method of the present invention includes a deblocking filtering step of removing block distortion of a reconstructed picture; And applying an adaptive sample offset (SAO) to the deblocking filtered image, wherein the applying of the adaptive sample offset is adaptive to a current block to which the sample offset is to be applied. And applying a band offset. According to the present invention, the possibility of selecting an appropriate offset according to the characteristics of a pixel is improved, an appropriate offset is selected according to the characteristics of each pixel, and a pixel value is more appropriately corrected, thereby improving video encoding efficiency.