07203234 is referenced by 38 patents and cites 41 patents.

A method of post-processing decompressed images includes identification of the direction of an image edge in a pixel block of the image and filtering applied along the boundary of the block in a direction substantially parallel to the detected image edge. Pixels are selected for filtering on the basis of the quantization parameter of the block of which they are members, the relative difference between pixels adjacent to the block boundary, and significant changes value of pixels in a filtering segment. Filtering is applied parallel to the detected edge to protect the sharpness of the edge while reducing or eliminating blocking and ringing artifacts. A method of separately post-processing fields of interlaced video eliminating complications arising from separate compression of the fields is also disclosed.

Title
Method of directional filtering for post-processing compressed video
Application Number
9/541141
Publication Number
7203234 (B1)
Application Date
March 31, 2000
Publication Date
April 10, 2007
Inventor
Wenjun Zeng
Vancouver
WA, US
Agent
Chernoff Vilhauer McClung & Stenzel
Assignee
Sharp Laboratories of America
WA, US
IPC
H04B 1/66
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