Halftone Conversion Technique Super Circle, Symmetric and Asymmetric Dot Placement
Original Publication Date: 1978-May-01
Included in the Prior Art Database: 2005-Feb-21
Continuous-to-halftone picture conversion techniques are currently attracting interest in applications where binary displays and on-off printing technologies are used. The general objective of halftoning is to convert continuous tone pictures which contain tones ranging from white through intermediate grays to black, into a representation which contains black and white tones only. The digitized, continuous tone sample value is first quantized into an appropriate number of amplitude levels. The amplitude levels are compared against a fixed threshold value to produce either a "1" or "0" to produce the white and black tones.