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Proceedings Paper

Universal descreening technique via wavelet analysis
Author(s): Jiebo Luo; Ricardo L. de Queiroz; Zhigang Fan
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Paper Abstract

In this paper, a novel wavelet-based approach to recover continuous tone images from halftone images is presented. Wavelet decomposition of the halftone image facilitates a series of spatial and frequency selective processing to preserve most of the original image contents while eliminating the halftone noise. Furthermore, optional non- linear filtering can be applied as post-processing stage to create the final aesthetic contone image. This approach lends itself to practical applications since it is independent of parameter estimation and hence universal to all types of halftoned images, including those obtained by scanning printed halftones.

Paper Details

Date Published: 4 April 1997
PDF: 12 pages
Proc. SPIE 3018, Color Imaging: Device-Independent Color, Color Hard Copy, and Graphic Arts II, (4 April 1997); doi: 10.1117/12.271596
Show Author Affiliations
Jiebo Luo, Eastman Kodak Co. (United States)
Ricardo L. de Queiroz, Xerox Corp. (United States)
Zhigang Fan, Xerox Corp. (United States)


Published in SPIE Proceedings Vol. 3018:
Color Imaging: Device-Independent Color, Color Hard Copy, and Graphic Arts II
Giordano B. Beretta; Reiner Eschbach, Editor(s)

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