Image analysis – Image enhancement or restoration – Edge or contour enhancement
Reexamination Certificate
2005-01-25
2005-01-25
Patel, Kanji (Department: 2625)
Image analysis
Image enhancement or restoration
Edge or contour enhancement
C382S262000, C358S463000, C375S240290
Reexamination Certificate
active
06847739
ABSTRACT:
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.
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Frommer William S.
Patel Kanji
Sony International (Europe) GmbH
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