Barycentric Screening

نویسندگان

  • Nur Arad
  • Doron Shaked
  • Zachi Baharav
  • Qian Lin
چکیده

color halftoning, dithering, barycentric coordinates. 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 generalizations 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 procedure based on a non-Cartesian coordinate system. Its main advantage over the traditional Cartesian thresholding is that it allows the rendition of solid color patches while using no more than a preselected quadruple of colors, thereby enabling a reduction of halftone noise.

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تاریخ انتشار 1999