ABSTRACT
For human beings, color provides one of the most important descriptors of the world around us. The human visual system is particularly attuned to two things: edges and color. We have mentioned that the human visual system is not particularly good at recognizing subtle changes in gray values. In this section we shall investigate color briefly, and then some methods of processing color images
1. The physical properties of light which give rise to color
2. The nature of the human eye and the ways in which it detects color
3. The nature of the human vision center in the brain, and the ways in which messages from the eye are perceived as color
As we have seen in Chapter 1, visible light is part of the electromagnetic spectrum. The values for the wavelengths of blue, green, and red were set in 1931 by the CIE (Commission Internationale d’Eclairage), an organization responsible for color standards.
