Y -

      Refers to the luminance portion of a Y/C video signal.
    Y/C -
      Color image encoding that separates luminance ((Y) and chrominance (C) signals.
    YIQ -
      Image encoding scheme similar to YUV that selects the direction of the two color axes, I and Q, to align with natural images. As an average, the I signal bears much more information than the Q signal. (YIQ is used in the NTSC video standard.)
    YUV -
      Color image encoding scheme that separates luminance (Y) and two color signals: red minus Y (U), and blue minus Y (V). Transmission of YUV can take advantage of the eye's greater sensitivity to luminance detail than color detail.
    zoom in -
      An optical camera change where the camera appears to approach the subject it is shooting.
    zooming -
      The progressive scaling of an image in order to give the visual impression of movement of all or part of a display group toward or away from an observer.
    zoom out -
      An optical camera change where the camera appears to back up from the subject it is shooting.


    [Back]