USAGE: imagestack -<option>[[/]<t>/<n>] <source> .. <source> <dest>
       combines <source>s and write result to <dest>.
       The imagefile <dest> should not exist.
       Single channel imagefiles are converted to grey-RGB.
       If specified, the <source>s are prescaled by the ratio <t>/<n>.
       Usemap coords are written as:
<dirname|./><TAB><basename><TAB><extension><TAB>"<ulx>,<uly>,<lrx>,<lry>"
USAGE: imagestack -<option>[[:]<t>:<n>] <source> .. <source> <dest>
       Idem, if specified, <dest> is scaled by the ratio <t>/<n>.
       Usemap coords are not written if <t>!=<n>.
OPTION:
 -h[orizontal]    make a horizontal row of <source>s.
                  Sizes: equal height.
                  Usemap coords are written to stdout.
 -v[ertical]      make a vertical column of <source>s.
                  Sizes: equal width.
                  Usemap coords are written to stdout.
 -m[inimalheight] like -h, but scale <source>s to the minimum of their height.
                  Sizes: no restriction.
                  Usemap coords are written to stdout.
 -a[verage]       sum pixelvalues and divide by number of <source>s.
                  Sizes: all equal.
                  Avg,Std are written to stdout.
 -<greylevel>r<rowlength>[/<t>/<n>] fill <dest> with matrix of <source>s
                  with grey background, cellsize maxwidth x maxheight.
                  Usemap coords are written to stdout.
 -d<prefix>/<suffix>/<greylevel>/<rowlength>[/<t>/<n>] idem, but the first
                  <prefix> <source>s and the last <suffix> <source>s are
                  not considered in determining maxwidth and maxheight.
                  These <source>s are scaled to maxwidth x maxheight.
 -I[nfimum]       componentwise minimum of pixelvalues of <source>s.
                  Sizes: all equal.
                  Min,Max are written to stdout.
 -M[aximum]       componentwise maximum of pixelvalues of <source>s.
                  Sizes: all equal.
                  Min,Max are written to stdout.
 -o[verlay]<ulx>/<uly>[/<t>/<n>] copy first <source> to <dest> and overlay
                  with the [scaled] second <source> with <ulx> and <uly>.
                  There should be exactly 2 <source>s.
 -s[tatistics]    write minimum and maximum width and height. <dest> unchanged.
USING: OpenCV version 1.1.0 (1.1.0)
VERSION: May 31 2014
SEE ALSO: TheGimp, ImageMagick.

Copyright (C) 2012 by Harm J. Schoonhoven

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