Image analysis – Image enhancement or restoration – Intensity – brightness – contrast – or shading correction
Reexamination Certificate
2011-07-12
2011-07-12
Mehta, Bhavesh M (Department: 2624)
Image analysis
Image enhancement or restoration
Intensity, brightness, contrast, or shading correction
C382S272000, C382S273000, C382S167000, C382S168000
Reexamination Certificate
active
07978927
ABSTRACT:
The invention discloses an image processing apparatus for adjusting lightness of an input image. The image processing apparatus includes a first processing module, a second processing module, a third processing module, and a fourth processing module. The first processing module is used for generating a lightness histogram with reference to the input image and determining a maximum lightness and an average lightness according to the lightness histogram. The second processing module is used for determining a first gain and a second gain according to the maximum lightness and a look-up table. The third processing module is used for selecting a lightness adjusting curve according to the average lightness. The fourth processing module is used for generating an output lightness corresponding to the input image.
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Hsu Kai-Chiang
Kao Hsu-Chia
Kao Hsu-Pin
Shan Yi-Chia
Bacon & Thomas PLLC
Marketech International Corp.
Mehta Bhavesh M
Thirugnanam Gandhi
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