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Article

Neugebauer Models for Color Error Diffusion Halftoning

Department of Communication Design Science, Kyushu University, Fukuoka 815-8540, Japan
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Received: 4 March 2020 / Revised: 14 April 2020 / Accepted: 16 April 2020 / Published: 17 April 2020
In this paper, we propose a method for halftoning color images based on an error diffusion technique, a color design criterion and Neugebauer models for expressing colors. For a natural extension of the conventional method for grayscale error diffusion to its color version, we first reformulate grayscale error diffusion with a one-dimensional Neugebauer model. Then we increase the dimension of the model to derive a color error diffusion method based on a three-dimensional Neugebauer model in RGB (red, green and blue) color space. Moreover, we propose a sparse Neugebauer model based on a color design criterion, or the minimal brightness variation criterion (MBVC), from which we derive a sparse Neugebauer model-based error diffusion method. Experimental results show that color halftone images produced by the proposed methods preserve the color contents in original continuous-tone images better than that by conventional color error diffusion methods. We also demonstrate that the proposed sparse method reduce halftone noise better than the state-of-the-art method based on MBVC. View Full-Text
Keywords: halftoning; error diffusion; sparse Neugebauer model halftoning; error diffusion; sparse Neugebauer model
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MDPI and ACS Style

Wu, K.; Inoue, K.; Hara, K. Neugebauer Models for Color Error Diffusion Halftoning. J. Imaging 2020, 6, 23. https://0-doi-org.brum.beds.ac.uk/10.3390/jimaging6040023

AMA Style

Wu K, Inoue K, Hara K. Neugebauer Models for Color Error Diffusion Halftoning. Journal of Imaging. 2020; 6(4):23. https://0-doi-org.brum.beds.ac.uk/10.3390/jimaging6040023

Chicago/Turabian Style

Wu, Kaiming, Kohei Inoue, and Kenji Hara. 2020. "Neugebauer Models for Color Error Diffusion Halftoning" Journal of Imaging 6, no. 4: 23. https://0-doi-org.brum.beds.ac.uk/10.3390/jimaging6040023

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