Method of color correction including transforming co-ordinate sy

Details Method of color correction including transforming co-ordinate sy Method of color correction including transforming co-ordinate sy

1976-09-13

1978-11-28

Griffin, Robert L.

Facsimile and static presentation processing

Static presentation processing

Attribute control

G03F 308

Patent

active

041278712

ABSTRACT:
A method of color correction of the particular application to a color scanner or a color facsimile for producing color separation images by photoelectrically scanning a color original. Usually, color separation signals obtained from the scanning operation are used as addressing signals for reading out correction signals or already-corrected recording signals memorized in a memory. In this case, according to this method, there is provided before the memory a premasking circuit which is capable of converting the functions of the color separation signals so as to convert co-ordinate systems of the color separation signals and the memorized signals. The conversion of the co-ordinate systems facilitates a considerable reduction of the memory's capacity and, at the same time, achieves more efficient use of the memory.

REFERENCES:
patent: 2790844 (1957-04-01), Neugebauer
patent: 3612753 (1971-10-01), Korman
patent: 3800071 (1974-03-01), Reeber
patent: 3800071 (1974-03-01), Reeber
patent: 3801736 (1974-04-01), Kosaka et al.
patent: 3893166 (1975-07-01), Pugsley
patent: 3904816 (1975-09-01), Taudt et al.
patent: 4017894 (1977-04-01), Akami et al.
patent: 4020502 (1977-04-01), Hayami et al.

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