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Articles by Werner Purgathofer
A Simple Method for Color Quantization: Octree Quantization
Michael Gervautz
, Werner Purgathofer
Graphics Gems
, Pages 287–293
Improved Threshold Matrices for Ordered Dithering
Werner Purgathofer,
Robert F. Tobler
,
Manfred Geiler
Graphics Gems V
, Pages 297–301