Image Processing

       The MPAC image processing functions provide for the display and
       manipulation of image data.  This allows for interactively
       improving, modifying, and adjusting images for human viewing.
       Display and manipulation functions are prefaced by a standard
       file selection screen.  The user may specify an image to be
       processed, request a range of image names to be displayed for
       selection, or request a list of all available images to be
       displayed.

       File formats supported include TIFF, PCX, and raw image files.
       Rendering may be in monochrome, grayscale, or full color.  File
       format and image rendering determinations are made automatically.
       Display operators include page up/down, center, home, end, pan,
       zoom, and negate.  Zoom may be from 1% to 30,000%.  At high zoom
       rates, detail is intelligently manufactured via normalized-
       distance interpolation.  Updated images may be saved in the TIFF
       format.

       System management functions are provided for the maintenance of
       various system operating parameters.  The directory to be used
       for storing image data may be specified here.  An indicator is
       provided as to whether initial presentation should be in positive
       or negative rendering.  Percentages are available for initial
       presentation size and pan and zoom increments.  A switch is also
       provided as to whether a histogram may be displayed.

       Image Processing functions:
               Scan image
               Display image
               Image manipulation
               System management