Image processing method and apparatus for adjusting the tone den

Details Image processing method and apparatus for adjusting the tone den Image processing method and apparatus for adjusting the tone den

1995-06-06

1998-01-20

Boudreau, Leo

Image analysis

Image enhancement or restoration

Edge or contour enhancement

382268, 382254, G06K 940

Patent

active

057108404

ABSTRACT:
An image processing method and apparatus capable of sufficiently emphasizing binary density image area without deterioration of the image quality of a gray-scale or middle tone image area. During image processing, a density A.sub.0 of a center pixel is converted into a -A.sub.i).vertline.-K.sub.2).times..SIGMA.(A.sub.0 -A.sub.i)
wherein A.sub.i is a density of peripheral pixels surrounding the center pixel and K.sub.1 and K.sub.2 are constants, respectively.

REFERENCES:
patent: 4571635 (1986-02-01), Mahmoodi et al.
patent: 4903138 (1990-02-01), Arakagaki
patent: 4941190 (1990-07-01), Joyce
patent: 5189529 (1993-02-01), Ishiwata et al.
patent: 5390264 (1995-02-01), Ishihara et al.

Affiliated with

Also associated with

Rating

Image processing method and apparatus for adjusting the tone den does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Image processing method and apparatus for adjusting the tone den, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Image processing method and apparatus for adjusting the tone den will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-731456