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bitmap

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bitmap


  2  definitions  found 
 
  From  WordNet  r  1.6  [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  (13  Mar  01)  [foldoc]: 
 
  bitmap 
 
  file  format>  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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