Method and apparatus for coalescing a grayscale image and render

Details Method and apparatus for coalescing a grayscale image and render Method and apparatus for coalescing a grayscale image and render

1994-03-30

1996-03-12

Boudreau, Leo H.

Image analysis

Image enhancement or restoration

Variable threshold, gain, or slice level

382293, 358456, G06K 936

Patent

active

054993059

ABSTRACT:
Pixels in a grayscale image are identified for coalescing based on a corresponding value in a threshold matrix. This threshold matrix value is then used to determine both the color and number of pixels to be coalesced at this location. Grayscale pixels are then coalesced based on pixels which will ultimately be the same color as the identified pixel. The coalesced grayscale image is then compared on a pixel-by-pixel basis to corresponding values in the threshold matrix to determine a halftone image.

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