Image sharpness processing method and apparatus

Details Image sharpness processing method and apparatus Image sharpness processing method and apparatus

1997-05-22

1999-04-20

Boudreau, Leo H.

Image analysis

Image enhancement or restoration

Edge or contour enhancement

382162, 382254, G06K 940, G06K 900

Patent

active

058964690

ABSTRACT:
A gray edge component and RGB color components of each pixel in an original image are generated. Saturation of each pixel in the original image is evaluated, and a mixing ratio is determined according to the saturation. Mixed edge components are generated for each pixel by mixing the gray edge component and the respective RGB edge components in the mixing ratio determined. The mixed RGB edge components are added to the RGB components of each pixel in the original image, respectively, to output a sharpened image. Apart from the mixing ratio determined from saturation of each pixel, a common fixed mixing ratio may be designated by the operator for application to all pixels.

REFERENCES:
patent: 4972256 (1990-11-01), Hirosawa et al.
patent: 5682443 (1997-10-01), Gouch et al.

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