@article{oai:niigata-u.repo.nii.ac.jp:00001755, author = {Kikuchi, Hisakazu and Iijima, Akira and Muramatsu, Shogo and Sasaki, Shigenobu}, issue = {5}, journal = {IEICE electronics express}, month = {Mar}, note = {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.}, pages = {170--175}, title = {Luma-based directional copy interpolation for color bilevel AM halftoning for printing}, volume = {5}, year = {2008} }