Image data stream filtering method, entering results of initial filtering of horizontal edges of image data in 2 intermediate memory locations in alternation

摘要

The filtering method has the image data divided into image blocks, each divided into image block lines, with separate filtering of the horizontal edges and the vertical edges of the image blocks, the filtered image data for adjacent image block lines held in separate memory locations (S1,2). The results of the initial filtering of the horizontal edges for adjacent image block lines are entered in alternation in 2 intermediate memory locations (Z1,2). An Independent claim for a device for filtering an image data stream is also included.