DIP Lecture 20: Dithering and halftoning

ECSE-4540 Intro to Digital Image Processing
Rich Radke, Rensselaer Polytechnic Institute
Lecture 20: Dithering and halftoning (4/20/15)
0:00:03 How are grayscale images printed in newspapers and books?
0:02:16 Why not just threshold the image?
0:05:09 Dithering
0:06:58 Matlab examples
0:12:12 Halftoning
0:15:14 Digital halftoning with a tiled array
0:16:48 An example array
0:21:07 Matlab examples
0:23:48 Perceptual considerations
0:25:44 Color halftoning with arrays at different angles
0:28:27 Another halftone array
0:32:34 Error-diffusion dithering
0:34:02 Floyd-Steinberg dithering
0:37:02 Paper-and-pencil example
0:39:52 Matlab examples
0:42:35 Computer graphics approaches to non-photorealistic rendering
0:44:00 Wall Street Journal portraits
0:44:41 Digital engraving
0:46:26 Coherent line drawing
0:47:24 Pen-and-ink illustration