06707952 is referenced by 31 patents.

A method to remove ringing artifacts from locations near dominant edges of an image reconstructed after compression. The image is decomposed into blocks small enough so that each would contain only one significant edge. A significant edge is tested as to whether it is a dominant edge of the image. If there is no dominant edge, the block is not processed. In the remaining blocks, the exact pixels that include the dominant edges are output without filtering. The direction of the dominant edges is inferred, and then the remaining pixels are filtered with a directional de-ringing filter. The de-ringing filter has a main direction that is aligned with the direction of the edge, and thus also with an inherent direction of the ringing artifacts.

Title
Method for removing ringing artifacts from locations near dominant edges of an image reconstructed after compression
Application Number
9/584036
Publication Number
6707952 (B1)
Application Date
May 30, 2000
Publication Date
March 16, 2004
Inventor
Shawmin Lei
Camas
WA, US
Wenjun Zeng
Vancouver
WA, US
Yap Peng Tan
Singapore
US
Agent
Marger Johnson & McCollom PC
US
Assignee
Sharp Laboratories of America
WA, US
IPC
G06K 9/40
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