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Proceedings Paper

Improved halftone detection method in digital document reproduction
Author(s): Jeng-Nan Shiau
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Paper Abstract

To enable optimal reproduction of a compound document containing both text and halftones, it is necessary to identify the halftone regions of the document and process them separately from the text and line arts portion. A technique for halftone detection using the auto correlation of the video stream has been improved to reduce the false classification of small kanji and to enable detection of non-45-degree screens. Typical examples of the detection map and the processed images are presented.

Paper Details

Date Published: 9 May 1994
PDF: 10 pages
Proc. SPIE 2171, Color Hard Copy and Graphic Arts III, (9 May 1994); doi: 10.1117/12.175320
Show Author Affiliations
Jeng-Nan Shiau, Xerox Corp. (United States)

Published in SPIE Proceedings Vol. 2171:
Color Hard Copy and Graphic Arts III
Jan Bares, Editor(s)

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