Image analysis – Image enhancement or restoration – Intensity – brightness – contrast – or shading correction
Reexamination Certificate
2008-01-29
2008-01-29
Patel, Kanjibhai (Department: 2624)
Image analysis
Image enhancement or restoration
Intensity, brightness, contrast, or shading correction
C382S263000
Reexamination Certificate
active
07324703
ABSTRACT:
A system and a method are provided for correcting the effect of non-uniform illumination on a reproduced image of a 2-D object. An image of a reference card in an illuminated setting is captured by an image capturing device. A 2-D object is placed in the same illuminated setting and the image of the object is captured. Next, a smoothing function for the reference card image is generated. The smoothing function is used to generate a smoothed reference card image. The smoothed reference card image is processed to compute inverse correction values, which are mathematical inverse of the pixel values in the smoothed reference card image. A pixel-by-pixel correction is then applied to the captured image of the 2-D object using the inverse correction values.
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Bhachech Miheer
DiCarlo Jeffrey M.
Hewlett--Packard Development Company, L.P.
Patel Kanjibhai
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