06847739 is referenced by 10 patents and cites 12 patents.

A method for post-processing compressed image data for reducing blocking artifacts is suggested, in which a set of primary image data (PID) is decomposed into data sets (IID1, IID2) containing the fine structure of the image with structure being smaller than the blocking artifacts and without the blocking artifacts and structures being larger than or comparable to the blocking artifacts as well as the blocking artifacts, respectively. In the decomposition of the primary image data (PID) a non-linear filtering process (F1) is involved. After decomposition of the primary image data (PID) a filtering process (F3) can be applied to the set of intermediate image data (IID2) containing larger details of the image as well as the blocking artifacts. Therefore, in the process of filtering out the blocking artifacts, the fine structure of the image is not influenced.

Title
Method for processing compressed image data for reducing blocking artifacts
Application Number
9/882384
Publication Number
6847739 (B2)
Application Date
June 15, 2001
Publication Date
January 25, 2005
Inventor
Klaus Jostschulte
Dortmund
DE
Agent
William S Frommer
Frommer Lawrence & Haug
Assignee
Sony International
DE
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