| 摘要 |
<P>PROBLEM TO BE SOLVED: To minimize image quality degradation of an entire screen and improve local image quality degradation. <P>SOLUTION: For each macroblock, an adaptive loop filter 111 classifies decoded images from a deblocking filter 21 into classes corresponding to intra-prediction mode information from a prediction mode buffer 112. For each classified class, the adaptive loop filter 111 performs filter coefficient calculation so as to minimize the residual between a source image from a screen rearrangement buffer 12 and an image from the deblocking filter 21. For each classified class, the adaptive loop filter 111 performs filter processing using the calculated filter coefficient and outputs the image after filter processing to a frame memory 22. This image processing device and method can, for example, be applied in an image encoding device that encodes with an H.264/AVC method as a base. <P>COPYRIGHT: (C)2012,JPO&INPIT |
