Color printer calibration architecture

Details Color printer calibration architecture Color printer calibration architecture

1992-10-01

1994-04-19

Powell, Mark R.

Facsimile and static presentation processing

Natural color facsimile

Color correction

358523, H04N 146

Patent

active

053051190

ABSTRACT:
In a printer which produces images as a function of the combination of cyan (C), magenta (M), yellow (Y) and black (K) colorants on an output color print, responsive to device independent colorimetric description of an image, there is provided a method of calibrating the response of the printer to an image described in terms of colorimetric values, including the steps of first, gray balancing or linearizing colorant signals; secondly, adding black to an ideal device dependent description of a color image in accordance with a predetermined black addition process, and thirdly, providing a color correction transformation process, where the color correction transformation is accomplished via a method of interpolating printer responses from a look-up table indexing colorimetric descriptions of measured real responses, which take into account subsequent black addition and signal linearization.

REFERENCES:
patent: 2790844 (1957-04-01), Neugebauer
patent: 4275413 (1981-06-01), Sakamoto et al.
patent: 4500919 (1985-02-01), Schreiber
patent: 4636845 (1987-01-01), Alkofer
patent: 4959790 (1990-09-01), Morgan
Po-Chieh Hung, "Tetrahedral Division Technique Applied to Colorimetric Calibration for Imaging Media", Annual Meeting IS&T, NJ, May, 1992, pp. 419-422.
Po-Chieh Hung, "Colorimetric Calibration for Scanners and Media", SPIE, vol. 1448, Camera and Input Scanner System (1991).
Sigfredo I. Nin et al, "Printing CIELAB Images on a CMYK Printer Using Tri-Linear Interpolation", SPIE Proceedings, vol. 1670, 1992, pp. 316-324.

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