C

CCIR

CCIR is the standard monochrome video format used in most of Europe, Israel, and some other places in the world. CCIR products are also generally referred to as PAL because all PAL products can also handle black and white CCIR video.

Chrominance

A signal that represents the color information of an image.

CIF formats

CIF formats, commonly used in video teleconferencing systems for specific resolution, 352 x 288 for PAL and 352 x 240 for NTSC.

Contrast

The difference between the darkest and the brightest parts of an image.

COM

The Component Object Model was introduced by Microsoft in 1993. It is an object-oriented programming model, used to enable inter-process communication and dynamic object creation, in any programming language that supports the technology.

Comb filter

An electrical filter circuit that passes a series of frequencies and rejects the frequencies in between, it combs out the frequencies. Used on a composite video signal, to separate the chrominance signal and reject the luminance signal, or to select the luminance signal and reject the chrominance signal.

Cropping

Remove any unwanted areas in an image.

Cross luminance

See Dot crawl.