Video signal processing with added probabilistic dither

Details Video signal processing with added probabilistic dither Video signal processing with added probabilistic dither

1991-06-07

1992-12-29

Wysocki, A. Jonathan

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

395131, 358 29, H04N 900

Patent

active

051758075

ABSTRACT:
A system in which a characteristic of individual picture points is provided to an accuracy of m binary bits but conveyed by n bits, where n is less than m. The value of a lower order bit of the n bit signal is switched to cause said binary value to represent, for any one picture point, either a value above or a value below the original value. The new values are distributed without order among the picture points with a probability dependent upon the value of the (m-n) lowest order bits of the desired value.

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