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Please use this identifier to cite or link to this item: http://hdl.handle.net/10119/4907

Title: New dispersed-dot halftoning technique by elimination of unstable pixels for electrophotography
Authors: Sasahara, Shinji
Asano, Tetsuo
Keywords: unstable pixels
stable printing
nonlinear printer model
iterative improvement
Issue Date: 2005-04
Publisher: International Society for Optical Engineering (SPIE)
Magazine name: Journal of Electronic Imaging
Volume: 14
Number: 2
Start page: 023006
DOI: 10.1117/1.1902703
Abstract: Printing processes of electrophotography basically involve some unstableness of analog nature. These instabilities make small dot reproduction stochastic and degrade image quality. To overcome the analog instabilities in this paper, we have developed a dispersed-dot halftoning technique for high resolution electrophotography. Based on the characteristic of electrophotography, a combination of a Gaussian filter with a sigmoid nonlinear function was used to calculate the probability of toner transfer in print. We can obtain a predicted image in print using this nonlinear printer model. Halftone images having good image quality are formed under this model in a way so that the perceptive error with respect to an original gray scale image is small. To achieve this, unstable pixels that have their transfer probabilities within a band in our nonlinear printer model are eliminated as much as possible by an iterative improvement method. As a result, perceptive error was much improved compared to conventional cluster-dot halftoning.
Rights: Copyright 2005 Society of Photo-Optical Instrumentation Engineers. This paper was published in Shinji Sasahara, Tetsuo Asano, Journal of Electronic Imaging, 14(2), 2005, 023006 and is made available as an electronic reprint with permission of SPIE. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.
URI: http://hdl.handle.net/10119/4907
Material Type: author
Appears in Collections:b10-1. 雑誌掲載論文 (Journal Articles)

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