Image sharpening by variable contrast mapping

Details Image sharpening by variable contrast mapping Image sharpening by variable contrast mapping

2005-07-05

2005-07-05

Johns, Andrew W. (Department: 2621)

Image analysis

Image enhancement or restoration

Intensity, brightness, contrast, or shading correction

C382S251000, C382S252000, C382S253000, C382S274000

Reexamination Certificate

active

06915024

ABSTRACT:
Image sharpening is performed by applying variable contrast stretching to pixels of interest in a digital image. For each pixel of interest, the amount of contrast stretching is a function of minimum and maximum intensity values in a local pixel neighborhood.

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