DragonFly On-Line Manual Pages

makecr(1)              DragonFly General Commands Manual             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
       rectangles 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)