Adaptive color conversion algorithm to achieve both high brightness and wide color gamut
We present a new color conversion algorithm for the new projector with the forth liquid crystal panel which controls the yellow light separately from RGB lights of the three-LCD system. This algorithm controls the volume of yellow light and corrects distorted color based on image analysis, and thus achieves high brightness and wide color gamut.
72.2: Invited Paper: Color Processing for Wide Gamut and Multi‐Primary Displays
Until recently most displays were based on CRT. Since all CRTs have similar color characteristics, RGB data represent colors tuned according to the CRT properties, and thus no processing is required at the display end. The emergence of wide gamut displays changed this situation, since rendering of RGB data on wide gamut displays without suitable processing would result in unnatural colors. In the article we discuss color processing for wide gamut displays, and describe algorithms and methods for gamut mapping and multi‐primary conversion.
Color-to-colorant transformation for a seven ink process
Adding RGB inks to the traditional set of CMYK inks increases the attainable color gamut. But the added complexity poses a challenge in generating suitable separations for rendering of color images. The approach taken in this study reduces the dimensionality of the problem by subdividing the 7 inks into smaller groupings. A series of 4 ink subsets from the 7 ink superset of CMYKRGB were individually characterized and a colorimetric transform from ink to color was obtained for each subset. In color space the 4 ink subsets represent adjacent and overlapping subgamuts of the 7 ink gamut. By utilizing these characterizations both individually and in combination with one another, an inktable which transforms color to ink was generated. In the darker tonal region, 4 inks/color permits access to regions of the full 7 ink gamut which are inaccessible to schemes employing 3 inks/color.