Clustered minority pixel error diffusion

نویسندگان

  • Pingshan Li
  • Jan P. Allebach
چکیده

We present a clustered-minority-pixel error-diffusion halftoning algorithm for which the quantizer threshold is modified on the basis of the past output and a dot activation map. Dot area, dot shape, and dot distribution are more controllable than with other clustered-dot halftone algorithms such as Levien's algorithm. This method also effectively reduces structured mazelike artifacts in midtones that occur in Levien's algorithm. The dot distribution is further improved by using different error-diffusion weights for different input gray levels.

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عنوان ژورنال:
  • Journal of the Optical Society of America. A, Optics, image science, and vision

دوره 21 7  شماره 

صفحات  -

تاریخ انتشار 2002