Color and Its Measurements*

Synopsis--An account is given for the fundamental principles of diffuse and tristimulus re-flectance measurements. The experimental basis for these measurements, including the CIE and Munsell systems for defining color space, is also discussed. These principles are sup-ported with qualitative and quantitative examples for color matching, as well as interaction studies with reflectance values and the Kubelka-Munk equation. A review of several availa-ble commercial color measuring devices, reference standards, and sample preparation tech-niques are also presented