Stochastic halftoning screening method

Details Stochastic halftoning screening method Stochastic halftoning screening method

1996-06-17

1997-09-30

Coles, Sr., Edward L.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358457, G03B 2160

Patent

active

056731213

ABSTRACT:
An idealized stochastic screen is characterized by all of the predominant color dots (black or white) uniformly distributed. The present invention seeks to approach this optimization by iteratively selecting pairs of threshold levels in the screen matrix, and measuring the approach to the idealized stochastic screen. The threshold values are then swapped in position to determine whether the swap improves the measurement or not. If it does, the swap is maintained. The process is iterated until the desired result is obtained.

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