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Man Pages
makecr(1) FreeBSD General Commands Manual makecr(1)

makecr - create circumscribing rectangles in an image

makecr [-options] in_file | stdin out_file

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.

-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.

pbm(5), d4file(4)

Copyright (C) 1994-1997 Hideaki Goto
E-Mail: hgot@ecip.tohoku.ac.jp, hgot@aso.ecei.tohoku.ac.jp
Feb. 1997

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