More Color and Human Perception Homework Solutions

1. A computer monitor manufacturer claims that it has developed three new types of red, green, an blue phosphors that provide a larger range of colors than other monitors. How could you validate this claim?

You would find the (x,y) location of the colors produced by the new phosphors for maximum luminance (or intensity) and plot them on the chramticity diagram. The triangle given by these points define the monitor's color gamut. This can be compared to other monitors by drawing each monitor's color gamut (defined by their three phosphers) on the diagram, and comparing the areas of the triangles.

2. Given a RGB color, (0.2, 0.3, 0.8), what is its corresponding color in the CMY model? What is its representation in the CMYK model?

CMY: (1.0, 1.0, 1.0) - (0.2, 0.3, 0.8) = (0.8, 0.7, 0.2)

CMYK: CMY values as above. K is min(C, M, Y) = 0.2. The answer is, therefore, (0.8, 0.7, 0.2, 0.2)