IEEE Transactions on Image Processing, vol. 16, no. 1, Jan. 2007, pp. 198-211.

Design of Tone Dependent Color Error Diffusion Halftoning Systems

Vishal Monga (1), Niranjan Damera-Venkata (2) and Brian L. Evans (1)

(1) Embedded Signal Processing Laboratory, Center for Perceptual Systems, The University of Texas at Austin, Austin, TX 78712-1084 USA -

(2) Hewlett-Packard Laboratories, 1501 Page Mill Road, Palo Alto, CA 94304

Draft of Paper

Image Archive

Halftoning Research at UT Austin


Conventional grayscale error diffusion halftoning produces worms and other objectionable artifacts. Tone dependent error diffusion reduces these artifacts by controlling the diffusion of quantization errors based on the input graylevel. This paper extends tone dependent error diffusion to color. In color error diffusion, what color to render becomes a major concern in addition to finding optimal dot patterns. We propose a visually meaningful scheme to train input level (or tone) dependent color error filters. Our design approach employs a Neugebauer printer model and a color HVS model that takes into account spatial considerations in color reproduction. The resulting halftones overcome several traditional error diffusion artifacts and achieve significantly greater accuracy in color rendition.

COPYRIGHT NOTICE: All the documents on this server have been submitted by their authors to scholarly journals or conferences as indicated, for the purpose of non-commercial dissemination of scientific work. The manuscripts are put on-line to facilitate this purpose. These manuscripts are copyrighted by the authors or the journals in which they were published. You may copy a manuscript for scholarly, non-commercial purposes, such as research or instruction, provided that you agree to respect these copyrights.

Last Updated 01/18/07.