Bitmap definition

Bitmap





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2 definitions found

From WordNet (r) 2.0 [wn]:

  bitmap
       n : an image represented as a two dimensional array of
           brightness values for pixels [syn: {electronic image}]

From The Free On-line Dictionary of Computing (27 SEP 03) [foldoc]:



  bitmap
       
           A data file or structure which
          corresponds {bit} for bit with an {image} displayed on a
          screen, probably in the same format as it would be stored in
          the display's {video memory} or maybe as a {device independent
          bitmap}.  A bitmap is characterised by the width and height of
          the image in {pixels} and the number of bits per pixel which
          determines the number of shades of grey or colours it can
          represent.  A bitmap representing a coloured image (a
          "{pixmap}") will usually have pixels with between one and
          eight bits for each of the red, green, and blue components,
          though other colour encodings are also used.  The green
          component sometimes has more bits that the other two to cater
          for the human eye's greater discrimination in this component.
       
          See also {vector graphics}, {image formats}.
       
          (1996-09-21)
       
       

















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