
Viewimage(Display Utils)     Khoros      Viewimage(Display Utils)

     DISPLAY UTILITIES

     Through the "Display Utilities" pull-down menu, three of
     viewimage's subforms can be accessed. The subforms deal with
     psuedocoloring an image, using the interactive lookup table
     to change the colormap of an image, and thresholding an
     image.  Note that these three subforms are identical in
     appearance and function as the subforms by the same name in
     the editimage program.  The action button found on the
     "Display Utilities" pull-down menu allow you to change the
     band that is currently displayed.

     1) Interactive LUT

          The first subform, Interactive LUT, brings up the sub-
          form which allows you to use the interactive look up
          table to change the colormap of the currently displayed
          image.

     2) Psuedocoloring

          The second subform, Psuedocolor, lets you interactively
          pseudocolor an image.

     5) Pixel Windowing / Pixel Thresholding

          The third subform, Window/Threshold, allows you to
          threshold an image.

     CHANGE BANDS

          The CHANGE BANDS option of the "Display Utilities"
          pull-down menu allows you to immediately change the
          band that is currently displayed.  When you select the
          CHANGE BAND option, a list widget will pop up, listing
          the bands that are currently available in the VIFF file
          currently being used.  Selecting a band from the list
          widget will cause viewimage to immediately replace the
          currently displayed band with the new band.  NOTE: THIS
          OPTION IS ONLY VALID WITH MULTI-BAND IMAGES!  Also note
          that the default option of viewimage is to display the
          1st band of the VIFF data provided.  If the VIFF data
          has only one image, that is considered the first band.

     Colorspace Models

          The interactive look up table, pseudocoloring, and
          thresholding operations offered by viewimage each work
          with any of 8 colorspace models. It is very important
          that you fully understand these colormodels, as well as
          the relationship between each of the colormodels,
          before the full functionality of viewimage can be
          intelligently used.  These are the colorspace models
          that are available:

          RGB (Red, Green, Blue)
          CMY (Cyan, Magenta, Yellow)
          HSV (Hue, Saturation, Value)
          HLS (Hue, Lightness, Saturation)
          YIQ (Illuminance, Chrominances)
          CIE XYZ
          CIE UVW
          GREY

     Copyright 1991, University of New Mexico. All rights
     reserved.

Version: 0                 Release: 1                           1

