Analysis of random halftone dithering using second order statistics

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Title: Analysis of random halftone dithering using second order statistics
Author: Steinberg, Eran
Abstract: An analytical approach is proposed to explain the appearance of unwanted low frequency artifacts during the random dithering halftoning process. The solution uses a theorem which relates the correlation of the input gray level (continuous) signal to the correlation of the output (halftone) binary signal. The numerical solution of the above relationship suggests that: 1. Introduction of low frequency artifacts is inevitable. 2. The effect is enhanced for mean gray levels farther from mid-gray. 3. High frequency information in the input signal is attenuated more than low frequency information.
Record URI: http://hdl.handle.net/1850/10976
Date: 1991-03

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