Image analysis – Image enhancement or restoration – Intensity – brightness – contrast – or shading correction
Reexamination Certificate
2007-02-05
2010-10-19
Tucker, Wes (Department: 2624)
Image analysis
Image enhancement or restoration
Intensity, brightness, contrast, or shading correction
C382S266000, C382S275000, C382S261000
Reexamination Certificate
active
07817875
ABSTRACT:
An image processing apparatus including a contrast detector that detects a contrast intensity of a pixel in a first image; a flat-intensity detector that detects a flat intensity of the pixel; an edge-intensity detector that detects an edge intensity of the pixel; a flat-weight setter that sets a flat weight for the pixel; an edge-weight setter that sets an edge weight for the pixel; an attenuator that attenuates components in a predetermined frequency band of the first image to form a second image; a first combiner that combines the first and second images to form a third image using weights based on the flat weight; an edge enhancer that enhances edges in the third image to form a fourth image; and a second combiner that combines the first and fourth images using weights based on the edge weight.
REFERENCES:
patent: 6731823 (2004-05-01), Gallagher
patent: 6956582 (2005-10-01), Tidwell
patent: 7437013 (2008-10-01), Anderson
patent: 1 486 916 (2004-12-01), None
International Search Report dated May 31, 2007.
Aoyama Koji
Michel Xavier
Sonnenschein Nath & Rosenthal LLP
Sony Corporation
Tucker Wes
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