Choosing the correct type of lighting is of prime importance when developing machine-vision applications.
Human vision is an extremely complex phenomenon and has yet to be duplicated in machine-vision systems. While machine-vision systems use CCD (or CMOS) based cameras to image areas of a scene, the cameras do not "see" the object presented to them-they only measure the light that an object reflects to them. The goal of machine-vision lighting is to consistently allow a machine-vision system to measure the energy reflected from objects. The camera will not change, and the object is not supposed to change, but if the light reflected from the observed object changes, the camera will record a different image.