ABSTRACT
The quality of a color reproduction is evaluated by how close the reproduced image is to that of the original image or scene. The term 'close' can be measured both quantitatively and qualitatively. Color reproduction systems can be of two types—additive and subtractive depending on the way two or more colors are mixed to create a new color in the color reproducing system. In subtractive color mixture, the color of a surface depends on the capacity of the surface to reflect some wavelengths and absorb others. The phosphor colors match the standard red green blue color gamut, but they age easily becoming progressively less bright. Liquid Crystal Displays (LCD) displays are a spatial array of red, green and blue segments, each of which is a colored filter over a cell of liquid crystal material that can be made variably transparent. The transfer function of LCDs is usually linear.
