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Halftoning Method Using the Dispersed CMY Dithering and Blue Noise Mask  

김윤태 (경북대학교 전자전기컴퓨터학부)
조양호 (경북대학교 전자전기컴퓨터학부)
이철희 (경운대학교 컴퓨터공학과)
하영호 (경북대학교 전자전기컴퓨터학부)
Publication Information
Journal of the Institute of Electronics Engineers of Korea SP / v.40, no.1, 2003 , pp. 1-9 More about this Journal
Abstract
In this paper, we propose a new method dispersing spatially C(Cyan), M(Magenta), Y(Yellow) instead of K(black) in the bright region. The overlapping of black dots decreases brightness in the dark region, and black dots are very sensitive to human visual system in the bright region. Therefore, to avoid this problem, bright and dark gray region in the color image is considered in the proposed approach. A new method which uses CMY simultaneously in single mask is proposed, and CMY dots are used dispersing spatially for the bright region instead of black dot by this method. And tone curve connection is used to consider the gray level of dark region. In previous method, BNM (Blue Noise Mask) has high granularity and a narrow dynamic range. But the proposed method has the low granularity, wide dynamic range, and high contrast properties. Because the proposed method uses three times dots spatially in the different position than a conventional BNM, it can express more spatial information and a similar gray level compared with BNM.
Keywords
디지털 하프토닝;블루 노이즈 마스크;분산 CMY 디더링;인간시각체계모델;낟알 특성;
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Times Cited By KSCI : 1  (Citation Analysis)
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