Method of detecting flesh color in color originals

Details Method of detecting flesh color in color originals Method of detecting flesh color in color originals

1977-06-22

1980-05-20

Corbin, John K.

Optics: measuring and testing

By shade or color

355 77, G03B 2776

Patent

active

042036712

ABSTRACT:
Red, green and blue densities of a number of points of a color negative or original are measured. If the measured values of the densities fall within an ellipsoid when plotted in a three dimensional coordinate system or within an ellipse when plotted in two-dimensional coordinate system the axes of which represent the red, green and blue densities or combinations of the three color densities, the measured point is determined to have flesh color. When the negative or original has more than a certain number of points of flesh color, it is determined that the principal subject matter of the negative or original is a human figure and the exposure in a printer is controlled to give a print having a desirable flesh color.

REFERENCES:
patent: 2608125 (1952-08-01), Hall
patent: 4120581 (1978-10-01), Takahashi et al.

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