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Proceedings Paper

Optimal binary image design based on the discrete cosine transform
Author(s): Buh-Yun Lee; Tsann-Shyong Liu; Long-Wen Chang
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Paper Abstract

Halftoning is a technique to display a continuous gray-tone image with a bilevel device. Conventionally, halftoning is done in the spatial domain. A new halftoning technique in the frequency domain is proposed. It chooses a best bilevel image to display the original continuous-tone image and minimize the mean square error between them with the weight coefficients based on the criterion of human vision in the frequency domain of the discrete cosine transform. The simulation results indicate that our algorithm shows better bilevel image visually without false contours.

Paper Details

Date Published: 27 February 1996
PDF: 11 pages
Proc. SPIE 2727, Visual Communications and Image Processing '96, (27 February 1996); doi: 10.1117/12.233309
Show Author Affiliations
Buh-Yun Lee, National Tsing Hua Univ. (Taiwan)
Tsann-Shyong Liu, National Tsing Hua Univ. (Taiwan)
Long-Wen Chang, National Tsing Hua Univ. (Taiwan)


Published in SPIE Proceedings Vol. 2727:
Visual Communications and Image Processing '96
Rashid Ansari; Mark J. T. Smith, Editor(s)

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