Method of graphic data redundancy reduction in an optical facsim

Details Method of graphic data redundancy reduction in an optical facsim Method of graphic data redundancy reduction in an optical facsim

1976-12-20

1978-08-29

Britton, Howard W.

Facsimile and static presentation processing

Facsimile

Recording apparatus

358256, 340347DD, H04N 712

Patent

active

041107950

ABSTRACT:
A method of graphic data redundancy reduction in an optical facsimile system wherein picture elements are optically represented by a grey coded number having N digits where N is at least 5 comprising evaluating at least the first N-2 bit planes to determine whether these bit planes should be processed in high or low resolution, and arbitrarily processing the remaining at least one bit plane at low resolution.

REFERENCES:
patent: 3849592 (1974-11-01), Rosenheck
patent: 4004079 (1977-01-01), Boston
Spencer, "Bit Plane Coding of Continuous-Tone Pictures," pp. 101-120, 1969.

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