Color Perception
These shortcomings can only be solved by using color instrumentation with internationally specified color systems. This guarantees objective description of colored objects. Visual color perception is influenced by different color sensitivities from person to person (mood, age, etc.), varying environments such as lightness and color, as well as the deficiency to communicate and document color and color differences.
Light Source
- The CIE (Commission Internationale de l’Eclairage) standardized light sources by the amount of emitted energy at each wavelength (= relative spectral power distribution).
- In practice, important illuminants are:
- Daylight D65, C
- Incandescent light A
- Fluorescent light F2, F11
Object
Light source and observer are defined by the CIE and their spectral functions are stored within color struments. Optical properties of an object are the only variables that need to be measured