makecr man page on DragonFly

makecr man page on DragonFly

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makecr(1)							     makecr(1)

NAME
       makecr - create circumscribing rectangles in an image

SYNOPSIS
       makecr [-options]  in_file | stdin  out_file

DESCRIPTION
       makecr  finds  connected	 components of black pixels in a binary image,
       and creates circumscribing rectangles.

       The file format of in_file is binary pbm(5).  The  circumscribing  rec‐
       tangles	are written on out_file, whose file format is d4file(4).  Each
       rectangle is denoted by a 4-tuple, the position of the left-top corner,
       the width, and the height of the rectangle.

       If  the string "stdin" is passed instead of in_file, makecr reads image
       from standard input.

OPTIONS
       -bstr N
	      Add N black pixels to both ends of  each	horizontal  black  run
	      before finding connected components.

       -rls N Apply  Runlength Smoothing Algorithm.  The horizontal white runs
	      which is shorter than N pixels  are  filled  with	 black	pixels
	      before finding connected components.

SEE ALSO
       pbm(5), d4file(4)

AUTHOR
       Copyright (C) 1994-1997 Hideaki Goto

       E-Mail: hgot@ecip.tohoku.ac.jp, hgot@aso.ecei.tohoku.ac.jp

				   Feb. 1997			     makecr(1)

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