Abstract
This chapter focuses on color from theory to implementation. Difference in intensity and wavelengths distribution between light sources has profound effect on the color observed for a carpet, because the carpet can absorb and reflect only that light that is available to it from the source. In color measurement, the human eye is replaced by a photocell that detects the light energy present at various visible wavelengths. Most color measurement systems are based on a standard light source and a “standard observer” for quantitative measurement of color. The human eye doesn't respond uniformly to color throughout the visible region, but gives maximum response in the middle visible wavelength.
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