Image analysis – Image enhancement or restoration – Edge or contour enhancement
Patent
1994-11-07
1997-02-11
Coles, Sr., Edward L.
Image analysis
Image enhancement or restoration
Edge or contour enhancement
382316, 358455, 358456, 358429, 358298, 358536, H04N 140, H04N 141
Patent
active
056029438
ABSTRACT:
A digital halftoning method for creating a gray-scale monochrome reproduction of a source image includes subdividing the source image into regions based on a trace of the space filing curve, further subdividing each of the regions into equally sized pixels, scanning the source image along the trace of the space filling curve to visit all pixels of the source image, calculating an average image intensity for each region, establishing a range of pixel cluster intensity levels based on a number of pixels in a cluster, and generating a dot pattern for each of the pixel clusters by activating individual ones of the pixels to an 0N state in accordance with a sequential order along the trace of the space filling curve.
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Gomes Jonas M.
Velho Luiz C.
Coles Sr. Edward L.
Downey P.A. Robert M.
Williams Kimberly A.
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