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RedHat 9 (Linux i386) - man page for ppmfade (redhat section 1)

PPMFADE(1)			     General Commands Manual			       PPMFADE(1)

NAME
       ppmfade - generate a transition between two image files using special effects.

SYNOPSIS
       ppmfade	[  -f first.ppm ] [ -l last.ppm ] [ -mix|-spread|-shift|-relief|-oil|-edge|-bent-
       ley|-block ] [ -base name ]

DESCRIPTION
       This program generates a transition between either two input images or between  one  input
       image  and black.  You can use the 30 intermediate images generated to show a smooth tran-
       sition between segments of a movie.  The input and  output  images  are	in  the  Portable
       Pixmap (PPM) format.  If you specify both input images, they should both be the same size.
       If you want to fade from black to an image, specify only the last image.  If you  want  to
       fade  from  an  image to black, specify only the first image.  ppmfade names the resulting
       image files base.nnnn .ppm, where nnnn is a number varying between 0001 and 0030 and  base
       is what you specify with via the -base option (default fade).

       Another way to convert by steps from one image to another is morphing.  You can use xmorph
       to do that.

OPTIONS
       -f first.ppm
	      This is the image file (PPM format) to be used at the beginning of the  transition.
	      If not specified, the fade will start from black.

       -l last.ppm
	      This is the image file (PPM format) to be used at the ending of the transition.  If
	      not specified, the fade will end with black.

       -mix   The two images are superimposed with the brightness of the first	image  decreasing
	      from  full  to  none  and the brightness of the final image increasing from none to
	      full.  The transition is quadratic in brightness	with  faster  transition  in  the
	      beginning and slower at the end.

       -spread
	      The pixels in the first image will be moved (spread) further and further from their
	      original location and then moved into the proper location in the final image.  This
	      is the default transition.

       -shift The pixels in the first image will be shifted further and further horizontally from
	      their original location and then moved into the proper location in the final image.

       -relief
	      The first image is faded to a Laplacian relief filtered version of the first image.
	      This  is	then faded to a Laplacian relief filtered version of the second image and
	      finally faded to the final image.

       -oil   The first image is faded to an "oil transfer" version of the first image.  This  is
	      then  faded  to  an "oil transfer" version of the second image and finally faded to
	      the final image.

       -edge  The first image is faded to an edge detected version of the first image.	 This  is
	      then faded to an edge detected version of the second image and finally faded to the
	      final image.

       -bentley
	      The first image is faded to a "Bentley Effect" version of the first image.  This is
	      then  faded  to a "Bentley Effect" version of the second image and finally faded to
	      the final image.

       -block The first image is defocused to small blocks.  The small blocks  are  converted  to
	      match  a	defocused version of the last image.  The block version of the last image
	      is then focused to the final image.

       -basename
	      This forms part of the output filenames, as described above.

       EXAMPLES
	      ppmfade -f teapot.ppm -l pyr.ppm

	      Fade from teapot.ppm to pyr.ppm generating fade.0001.ppm to fade.0030.ppm using the
	      "spread" transition.

	      ppmfade -l teapot.ppm

	      Fade from black to teapot.ppm generating fade.0001.ppm to fade.0030.ppm.

	      ppmfade -f teapot.ppm -base end

	      Fade from teapot.ppm to black generating end.0001.ppm to end.0030.ppm.

SEE ALSO
       tontsc(1), sgifade(1), smart_vfr(1), xmorph(1), ppm(5),

AUTHOR
       Wesley C. Barris (wesb@msc.edu)
       Army High Performance Computing Research Center (AHPCRC)
       Minnesota Supercomputer Center, Inc.

1					  April 1, 2000 			       PPMFADE(1)


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