
This directory includes a number of shell scripts which use SGI's image
tools to do various things.

movingfade:
   Suppose that you have two series of images that you want to put together
   into a movie.  Suppose you also wanted to create a "fade" between these
   two segments such that the fade occurs as the last of the first segment
   is played out.  Here is a time line of what I mean:

	|----first segment----|
                          |----second segment----|

   Movingfade can be used to create the overlapping portion (1 second/30
   frames).

rotoscope:
   This script can be used to paint on a series of images.  I use the SGI
   program "imp".  The way this is done is kind of clumsy but it works.

sgifade:
   This script is used to generate a 30 frame transition between two images
   of the same size.  A variety of transition types are possible with this
   command.

smart_vfr:
   This command is used to send image data to the Abekas A60.  It can handle
   sgi, rla, rle, yuv, and other image types.  It's best feature is that it
   can be run while the image files are being generated.  In an image file
   is not yet completely rendered, smart_vfr will wait for it to finish
   before trying to send it.

tontsc:
   This command is used to scale an image into a variety of image formats.
   I use it mostly to scale image data into a 720x486 format (NTSC).  I
   have added a number of other "standard" size options to it (they are
   easy to add).


You may wish to copy these tools to a directory (like /usr/local/bin) in
your path.  To see more details on how these commands are used, look in
the man directory.

If you have any questions, comments, bugs, or suggestions, please contact
us at gvlware@ahpcrc.umn.edu.


	Wesley C. Barris
	Army High Performance Computing Research Center (AHPCRC)
	Minnesota Supercomputer Center, Inc.
