Patent
1994-07-29
1996-11-26
Zimmerman, Mark K.
H04N 121
Patent
active
055794572
ABSTRACT:
A method and apparatus for digital halftoning places curving structure centers at random locations within a halftone cell. Pixel illumination ordering is determined based on displacement from a pixel to a nearest CSC along a curving structure. Curving structures including spirals with varying numbers of arms, varying angles of departure, varying orientations, and varying other parameters are used to achieve visual aesthetics as desired.
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Ulichney, Robert, Digital Halftoning, (Cambridge, Massachusetts: MIT Press, 1987) (ISBN#0-262-21009-6).
Meyer Stuart P.
The Harlequin Group Ltd.
Vo Cliff N.
Zimmerman Mark K.
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