Optimal binary image design based on the discrete cosine transform

Buh-Yun Lee; Tsann-Shyong Liu; Long-Wen Chang

doi:10.1117/12.233309

27 February 1996 Optimal binary image design based on the discrete cosine transform

Buh-Yun Lee, Tsann-Shyong Liu, Long-Wen Chang

Proceedings Volume 2727, Visual Communications and Image Processing '96; (1996) https://doi.org/10.1117/12.233309
Event: Visual Communications and Image Processing '96, 1996, Orlando, FL, United States

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.

Citation Download Citation

Buh-Yun Lee, Tsann-Shyong Liu, and Long-Wen Chang "Optimal binary image design based on the discrete cosine transform", Proc. SPIE 2727, Visual Communications and Image Processing '96, (27 February 1996); https://doi.org/10.1117/12.233309

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