Conditional Color Gamut for Color Management of Multiview Printed Images

A number of printing or surface coloration technologies have recently emerged, able to print color images on various kinds of supports with various benefits in terms of color rendering. Some of them are even able to produce image with variable colors, where each point in the print can display two or more colors according to the illumination or observation conditions (modes). For most printing systems presenting these variable color properties, the colors displayable in one mode depend on the colors that we want to display in the other modes. Because of this interdependence of the colors displayable in the different modes, the color gamut concept as defined for traditional printing is not sufficient anymore to perform efficient color management. We propose to extend it by taking into account the constraints induced by the selection of colors in some modes, and introduce the concept of conditional color gamut, illustrated through the case of recto-verso halftone prints viewed in reflection or transmission modes, where gamuts can be easily predicted thanks to prediction models.