21 December 1999 Dithering in color simplexes
Author Affiliations +
Abstract
Monochrome dither halftoning is a gray-scale image rendering procedure where gray-levels in an image are compared against a periodic threshold array, placing a Black dot in every location whose gray-level is smaller than the corresponding threshold value. Current generalization to color printing result in Cartesian thresholding procedures, namely RGB values are compared component-wise to trivariate thresholds. In this report we develop a color dithering framework based on a non-Cartesian coordinate system. To this end we generalize multidimensional dithering in a non-separable manner, and define it only as a space-varying point- operator. Three dithering methods are proposed within this framework. The main advantage of simplex dither over the traditional Cartesian dither is that it allows the rendition of solid color patches while using no more than a preselected quadruple of colors, thereby enabling a reduction in halftone noise.
© (1999) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Doron Shaked, Zachi Z. Baharav, Nur Arad, "Dithering in color simplexes", Proc. SPIE 3963, Color Imaging: Device-Independent Color, Color Hardcopy, and Graphic Arts V, (21 December 1999); doi: 10.1117/12.373420; https://doi.org/10.1117/12.373420
PROCEEDINGS
10 PAGES


SHARE
KEYWORDS
RGB color model

Halftones

Solids

Color printing

Computing systems

Silicon

Visual system

RELATED CONTENT

Multilevel color halftoning algorithms
Proceedings of SPIE (February 07 1997)
G/M dither or color dither from monochrome dither matrices
Proceedings of SPIE (December 18 2003)
Color diffusion: error diffusion for color halftones
Proceedings of SPIE (December 22 1998)
Adaptive color artwork
Proceedings of SPIE (January 29 2007)
Fakery in graphic arts
Proceedings of SPIE (March 16 2000)
Grouping through local, parallel interactions
Proceedings of SPIE (August 22 1995)

Back to Top