Image analysis – Image enhancement or restoration – Image filter
Reexamination Certificate
2004-05-20
2010-10-26
Bella, Matthew C (Department: 2624)
Image analysis
Image enhancement or restoration
Image filter
C382S261000, C382S262000, C382S271000, C382S272000, C348S597000, C358S448000, C358S003030
Reexamination Certificate
active
07822285
ABSTRACT:
The present disclosure provides methods and systems for image processing by locally adaptive filters that preserve the edges while smoothing the image. In the exemplary method, a filter adjusts image pixel values utilizing a locally adaptive weighted average method. To adjust the value of a target pixel, the filter uses the data corresponding to some of its surrounding pixels and modifies the weights in an inverse relation with both their distance from the target pixel and the difference between their data. Various embodiments present different schemes for selection of surrounding pixels and computation of weighted average values.
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Bella Matthew C
Blakely , Sokoloff, Taylor & Zafman LLP
OmniVision Technologies Inc.
Torres José M
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