Clustered aperiodic mask
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United States of America Patent
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Jun 29, 1999
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N/A
app pub date -
Oct 3, 1997
filing date -
Oct 3, 1997
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Abstract
A technique combines most of the advantages of both blue noise and clustering in generating a clustered aperiodic mask and using it in a dither array algorithm for halftoning. The method of halftoning of grey scale images utilizes a pixel-by-pixel comparison of the image against a clustered aperiodic mask in which the clustered aperiodic mask is comprised of a partly random and partly deterministic single valued function which is designed to produce visually pleasing dot configurations when thresholded at any level of grey.
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