Filtering method for removing block artifacts and/or ringing noise and apparatus therefor

摘要

Provided are a filtering method and apparatus for removing blocking artifacts and ringing noise. The filtering method includes transforming video data on a block-by-block basis, and detecting the presence of an edge region in the video data by checking the distribution of values obtained by the transformation. Accordingly, it is possible to completely remove blocking artifacts and/or ringing noise by more effectively detecting the presence of an edge region in video data.

主权项

1. A filtering method for removing blocking artifacts, comprising:
(a) transforming and quantizing a block comprising video data in pixel units so as to obtain quantized values, checking the obtained quantized values, and creating filter information for the block based on the checking; (b) determining filtering strength for the block based on the created filter information of the block; and (c) filtering by a loop filter, the block based on the determined filtering strength, wherein the creating filter information is carried out in the loop filter located in a feedback path, and wherein the filtering strength indicates the number of pixels to be filtered.