Tonal conversion method for pictures

Details Tonal conversion method for pictures Tonal conversion method for pictures

1988-03-09

1989-03-07

Goldberg, E. A.

Facsimile and static presentation processing

Facsimile

Recording apparatus

358283, H04N 121

Patent

active

048111082

ABSTRACT:
An original continuous-tone picture is converted into a halftone picture, which is to be reproduced, on the basis of pictorial information from the original picture. The information is processed in such a way that the base density of a desired control point on the original picture and the halftone intensity of a corresponding control point on the halftone picture are correlated in accordance with a specific conversion formula.

REFERENCES:
patent: 4680646 (1987-07-01), Ikeda et al.
Principles of Color Reproduction, John Wiley & Sons, Inc., 1967, pp. 110-111, by J. A. C. Yule.

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