UNSLICE(1) 1 (May 21, 1987) UNSLICE(1)
NAME
unslice - Quickly assemble image slices
SYNOPSIS
unslice [ -f ctlfile ] [ -y ymax ] [ -o outfile ] infiles
...
DESCRIPTION
Unslice quickly assembles a number of horizontal image
strips into a single output image. A typical use for
unslice is to put together portions of an image ("slices")
computed independently into a single output picture.
Because unslice uses the "raw" RLE library calls to read and
write the images, it runs much faster than doing the
equivalent operations with crop and comp.
unslice has two modes of operation. If given the -f flag,
unslice reads a control file telling it how to assemble the
images. This is a text file with two decimal numbers on
each line, one line for each slice to be assembled into the
output image. Each line gives the starting and stopping
scanlines (inclusive) for each slice. These must be in
ascending order. This is useful if the slices have excess
image area that should be cropped away.
If no control file is given, the -y flag is used. This
tells unslice what the maximum Y value of the output image
is. Unslice reads the files in order, using the RLE headers
to determine where to place the slices. If two slices
overlap, the first scanlines from the second slice are
thrown away. In both cases, the slices must be in ascending
order, and are expected to be of uniform width.
SEE ALSO
crop(1), rlecomp(1), rlepatch(1), repos(1), urt(1), RLE(5).
AUTHOR
John W. Peterson
BUGS
Unslice has really been superceded by rlepatch(1).
Page 1 (printed 12/1/98)
