Tone Dependent Color Error Di usion Project Report Multidimensional DSP , Spring 2003
نویسنده
چکیده
Conventional grayscale error di usion halftoning produces worms and other objectionable artifacts. Tone Dependent error di usion for grayscale halftoning (Li and Allebach) helps reduce these artifacts by controlling di usion of quantization errors based on the input graylevel value. Allebach et al. design error lters weights and thresholds for each (input) graylevel optimized based on a human visual system (HVS) model. In this report we extend tone dependent error di usion to color. A visually optimum deisgn approach for tone dependent error lters (for each color plane) is presented. The resulting halftones are seen to overcome most of the traditional error di usion artifacts.
منابع مشابه
Tone Dependent Color Error Diiusion Literature Survey Multidimensional Dsp Project, Spring 2003 Vishal Monga
Image halftoning converts a high-resolution image to a low-resolution image, e.g. an 8-bit grayscale image to a binary image, for printing and display. Conventional error di usion halftoning produces worms and other objectionable artifacts. Tone Dependent error di usion (Li and Allebach) helps reduce these artifacts by controlling di usion of quantization errors based on the input graylevel val...
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