Multiscale Probabilistic Dithering for Suppressing Contour Artifacts in Digital Images

  title={Multiscale Probabilistic Dithering for Suppressing Contour Artifacts in Digital Images},
  author={Sitaram Bhagavathy and Joan Llach and Jiefu Zhai},
  journal={IEEE Transactions on Image Processing},
A method is proposed for reducing the visibility of ldquocontour artifacts,rdquo i.e., false contours resulting from color quantization in digital images. The method performs a multiscale analysis on the neighborhood of each pixel, determines the presence and scale of contour artifacts, and probabilistically dithers (perturbs) the color of the pixel. The overall effect is to ldquobreak downrdquo the false contours, making them less visible. The proposed method may be used to reduce contour… CONTINUE READING


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