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Proceedings Paper

Wavelet-based approach to inverse halftoning
Author(s): Zixiang Xiong; Michael T. Orchard; Kannan Ramchandran
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Paper Abstract

This paper introduces a new approach to inverse halftoning using nonorthogonal wavelets. The distinct features of this wavelet-based approach are: a) edge information in the highpass wavelet images of a halftone is extracted and used to assist inverse halftoning, b) cross-scale correlations in the multiscale wavelet decomposition are used for removing background halftoning noise while preserving important edges in the wavelet lowpass image, c) experiments show that our simple wavelet-based approach outperforms the best results obtained from inverse halftoning methods published in the literature, which are iterative in nature.

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: 10.1117/12.271578
Show Author Affiliations
Zixiang Xiong, Princeton Univ. (United States)
Michael T. Orchard, Princeton Univ. (United States)
Kannan Ramchandran, Univ. of Illinois/Urbana-Champaign (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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