| 摘要 |
A block-based image processing method and an apparatus therefor, in which blocking artifacts caused by a block-based image processing can be removed by using spatial adaptive filtering based on image restoration theory. The block-based image processing method, for removing blocking artifacts induced in processing an image in blocks of a predetermined unit size, includes the steps of: (a) dividing the processed image signal into blocks of the predetermined unit size; (b) detecting an edge direction of the image for each block divided; (c) band-pass filtering the processed image signal to obtain plurality of filtered image signals equal in number to the possible types of edge direction; (d) selecting one of the band-pass filtered image signals for each block, according to the detected edge direction; and (e) synthesizing the selected image signals for all the blocks to obtain an original signal from which the blocking artifact is removed. |
