- 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

Disclosed are an in-loop filtering method and apparatus using an adaptive band offset interval, and an apparatus for encoding and decoding using an adaptive band offset interval. An in-loop filtering method of the present invention includes a deblocking filtering step of removing block distortion of a reconstructed picture; and applying a Sample Adaptive Offset (SAO) to the deblocking-filtered image, wherein the applying the adaptive sample offset is adaptive to the current block to which the sample offset is to be applied. 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 the pixel value is more appropriately corrected, thereby improving video encoding efficiency.