  XDisplay_Opt help page



  GENERAL DESCRIPTION

  The XDisplay_Opt widget allows the user to define the
  options to display a given image.

 
 
  PARAMETERS

  'Minimum intensity':
      Minimum intensity level to display. Values lower than
      this bound are set to 'Minimum intensity' before display.

  'Maximum intensity':
      Maximum intensity level to display.

  'Stretch':
      Define display scale. Possible choices are
      - square (maximum contrast)
      - linear
      - square root
      - logarithm (minimum contrast)

  'Reverse scale':
      Reverse gray level scale: the brightest pixels will be
      represented by the lowest gray level.

  'Chopping threshold':
      Pixels above this threshold are set to the minimum gray
      level. This options is useful to highlight saturated
      regions in the image.

  'Color Table':
      Select a pre-defined color table. A suitable choice is
      'STERN SPECIAL'.
      This option might not work properly if the screen is not
      set to 256 colors.



  CONTROLS/BUTTONS

  'Apply options':
      Display the input array with the currently defined
      options. The options are applied to a copy of the input
      array, which of course is not modified.

  'Help':
      Display this help page.

  'Exit':
      Quit XDisplay_Opt.