A method for reducing block artifacts with the boundaries of digital image blocks, which consists of a field of pels, wherein a plurality of image blocks form an image or field

摘要

A method for reducing block artifacts with the boundaries of digital image blocks (b_{x, y}), the from a field of pels, wherein a plurality of image blocks (b_{x, y}) an image (frame) or field (field), by carrying out of filter operations for each image block (b_{x, y}) of the image (frame) or field (field) by applying to a filtering of a vertical block boundaries column of the respective image block (b_{x – 1, y}) immediately a filtering of horizontal block boundaries of an image block (b_{x – 1, y}) follows and the block boundaries, at the same time, both for a current image block (b_{x – 1, y}) as well as for the block boundary to be filtered to the adjacent image block (b_{x, y} and / or b_{x – 1, y – 1}) to be filtered, characterized by reading in each case in a whole line of a current image block (b_{x – 1, y}) from a main memory (mm) and an entire row of an adjacent image block (b_{x, y}) from an image block memory (bm1) for the simultaneous filtering of the vertical block boundaries of the current and of the adjacent image block (b_{x – 1, y}; b_{x, y}), the rows of the image blocks (b_{x – 1, y}; b_{x, y}) read in and in succession to be filtered, subsequent reading-in in each case one entire column..