Notes for March 20, 2017 ------------------------ Dithering Images - reducing the number of colors in an image, but preserving the overall "look" of the image. See pages 293-295 in the Companion. Page 295, custom dithers: Both Shiau-Fan, patented xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx PX 4/8 1/8 1/8 2/8 xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx PX 8/16 1/16 1/16 2/16 4/16