Pixel, Pel (abbreviation of Picture Element)
A dot that can vary in brightness and/or color.
A two-dimensional array of pixels.
A digitized image that can vary in brightness and color.
A digitized image which contains pixels which vary only in brightness in fine steps from black to white.
A digitized image which contains pixels which may only be fully black or white.
The number of pixel spaces used in sampling a unit length of the image.
Tonal Resolution (or Pixel Depth)
The number of bits required to represent the number of distinguishable shades preserved in the image.