Block distortion detection method, block distortion detection apparatus, block distortion removal method, and block distortion removal apparatus
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United States of America Patent
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Jun 28, 2011
Grant Date -
Jun 10, 2010
app pub date -
Feb 16, 2010
filing date -
Oct 20, 2000
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Abstract
A video decoder is connected with a block distortion detector for specifying the boundary of blocks where block boundary occurs, using decoded image data and information of motion vectors, which are supplied from the video decoder; and a block distortion remover for subjecting pixels in the vicinity of the block boundary of the decoded image to filtering on the basis of the result of detection from the block distortion detector, thereby removing the block distortion. Therefore, block distortion is accurately detected when a compressed and coded image is decoded, and the detected block distortion is removed while minimizing the blurriness of the image.
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