The interpolation of color pixel values prior to digital halftoning is discussed and a new color interpolation sheme is presented by a directional copy of color values in the gradient field of luma. Error diffusion quantization is combined with clustered-dot ordered dithering to prevent from contouring. Experimental results demonstrate that sharp and false color-free interpolation is obtained to produce color bilevel AM halftones with weak rosettes and no contouring artifacts.
雑誌名
IEICE electronics express
巻
5
号
5
ページ
170 - 175
発行年
2008-03
出版者
Institute of Electronics, Information and Communication Engineers