Reproducing Color Images as DuotonesJoanna L. Power
Brad S. West
Eric J. Stollnitz
David H. Salesin
University of Washington
We investigate a new approach for reproducing color images. Rather than mapping the colors in an image onto the gamut of colors that can be printed with cyan, magenta, yellow, and black inks, we choose the set of printing inks for the particular image being reproduced. In this paper, we look at the special case of selecting inks for duotone printing, a relatively inexpensive process in which just two inks are used. Specifically, the system we describe takes an image as input, and allows a user to select 0, 1, or 2 inks. It then chooses the remaining ink or inks so as to reproduce the image as accurately as possible and produces the appropriate color separations automatically.
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