Printing of digital color images with locally adjusted half-toning
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United States of America Patent
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Jan 11, 2005
Grant Date -
N/A
app pub date -
Jul 26, 2000
filing date -
Jul 26, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method of and apparatus for printing color images by the superimposition of a number of separations, using a first half-tone technique optimized for surface reproduction, such as dithering, and a second half-tone technique, differing from the first and optimized for edge reproduction, such as thresholding with error diffusion, is disclosed. The second half-tone technique is used in edge transitions for pixels of a separation which substantially influences the edge transition, and the first half-tone technique is used outside the edge transition. And the first half-tone technique is used throughout in the case of pixels of a separation which provide no or minimal contribution to the edge transition.
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Cited Art Landscape
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