Variable blocking artifact size and offset detection

摘要

An aspect of the invention includes a system and method for determining a block size and offset for a block artifact. A content is identified. The content can be an image, a frame of video, or any other appropriate content. Edge differences are calculated in each dimension of the content based on the pixel values. The edge differences are filtered. From the filtered edge differences, block attributes, such as block size and offset, can be determined.

主权项

1. A system, comprising:
a computer; a memory in the computer; a content stored in the memory of the computer, the content having pixels arranged in two or more dimensions; an edge difference calculator to calculate edge differences of the content in a first dimension of the two or more dimensions, the edge difference calculator being structured to calculate absolute differences within multiple sets of adjacent pixels in the content, the adjacent pixels within each of the multiple sets being adjacent in a dimension orthogonal to the first dimension and each pixel in each of the multiple sets of adjacent pixels being adjacent to a pixel in another set of the multiple sets, sum the absolute differences of the multiple sets of adjacent pixels to produce a sum, and scale the sum of the absolute differences by a number of pixels in the first dimension to produce the edge differences; an edge difference filter to filter said edge differences to produce filtered edge differences; and a block attribute calculator to determine a block attribute from said filtered edge differences.