Clustered aperiodic mask

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 aperiodi...

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Bibliographic Details
Main Authors WU; CHAI WAH, TRESSER; CHARLES P, THOMPSON; GERHARD ROBERT
Format Patent
LanguageEnglish
Published 29.06.1999
Edition6
Subjects
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
PICTORIAL COMMUNICATION, e.g. TELEVISION
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Summary: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.
Bibliography:Application Number: US19970943881