Dictionary of Electrical Engineering

Commonly used terms in the Electrical industry.

lighting system
any scheme used for illuminating a scene, usually for acquisition by a digital system. Illumination is crucial to digital images, since even illumination gradients that cannot be perceived by the eye can have an influence on the results of digital processing. For inspection tasks and document digitization, a uniform, reproducable, high level of lighting is usually required. Other applications have other requirements for uniformity, frequency, and intensity.

Structured lighting schemes are used to collect multiple images of a scene each having different illumination .

Strobe lights can be used to effectively freeze motion, and are useful for many visual inspection tasks.
See structured light