DAILY DIGITAL FACTS

LUMINANCE
a component of video:the black and white or brightness element,of an image.It is written as Y,so the Y in Y,B-Y,R-Y,YUV,YIQand Y.Cr,Cb is the luminance information of the signal.

Daily Digital Facts

RGB
The abbreviation for the Red,Greenand Blue signals,the primary colors of television.Camera and telecines have red,greenand blue receptors,the TV screen has red,green and blue phosphors or LED's.RGB is digitized with 4:4:4 sampling which generates 50% more data than 4:2:2

DAILY DIGITAL FACTS

Pixel (or Pel)
A shortened version of 'Picture cell or Picture Element'.The name given to one sample of picture information.Pixel can refer to an individual sample of R G B,luminance or chrominance,or sometime to a collection of such samples if they are co-sited and together produce element.