DragonFly On-Line Manual Pages

UNSLICE(1)             DragonFly General Commands Manual            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       Unslice has really been superceded by rlepatch(1).

4th Berkeley Distribution        May 21, 1987                       UNSLICE(1)