Automatic contrast enhancement

Details Automatic contrast enhancement Automatic contrast enhancement

2011-05-31

2011-05-31

Patel, Kanji (Department: 2624)

Image analysis

Image enhancement or restoration

C382S168000, C382S273000, C358S522000

Reexamination Certificate

active

07953286

ABSTRACT:
In a process for enhancing contrast of an image having pixels in different brightness intensities, a histogram in discrete bins is generated. Each bin represents a pixel population of at least one pixel brightness intensity. A peak and a peak region of the histogram is then identified, wherein the peak region is a range of discrete bins around the peak. An average pixel population within the peak region is computed, and the pixel populations of the discrete bins within the peak region that exceeds the average pixel population are distributed. A transfer curve for mapping onto the image is then generated. The process can be used in an image processor for enhancing contrast of an image having pixel. Still further, a display having a receiver and a screen can include the foregoing image processor.

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