Method of sharpening image using luminance channel

Details Method of sharpening image using luminance channel Method of sharpening image using luminance channel

2007-10-30

2007-10-30

Patel, Kanjibhai (Department: 2624)

Image analysis

Image enhancement or restoration

Image filter

C358S532000, C345S604000, C348S712000

Reexamination Certificate

active

10943977

ABSTRACT:
A method for sharpening an image, the method including the steps of: (a) receiving a data set including at least one colour plane indicative of the image; and (b) extracting an initial luminance channel from the data set, the initial luminance channel being in a colour space different to that of the at least one colour plane; the method being characterized by the further steps of: (c) sharpening the initial luminance channel to form a revised luminance channel; and (d) adding the revised luminance channel to at least one of the colour planes of the data set.

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