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makepr(1)							     makepr(1)

NAME
       makepr - create Primitive Rectangles in an image

SYNOPSIS
       makepr [-options]  in_file  out_file  [ out_file2 ]

DESCRIPTION
       makepr  reads  a	 binary	 image	and creates Primitive Rectangles.  The
       Primitive Rectangle is the rectangle whose width is a constant  (column
       width).	See references for the detail of Primitive Rectangles.

       The  file format of in_file is binary pbm(5).  The primitive rectangles
       are written on out_file and out_file2, whose file format are  d4file(4)
       ordinally.  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 option -image is specified, the rectangle image  is  written  on
       out_file.  The file format of out_file is binary pbm(5) in this case.

OPTIONS
       -or    Logical  "OR" of black pixels is used at the creation of rectan‐
	      gles.  (This is default.)

       -and   Logical "AND" of black pixels is used at the creation of rectan‐
	      gles.

       -reverse
	      Reverse black and white of the input image.

       -cwid N
	      Set  the	width of Primitive Rectangles to N.  The default value
	      is N=16.

       -image Create image file instead of rectangle file.

       -box   Fill the inside of rectangle by  black.  Use  this  option  with
	      -image.

       -vert  Create the vertical Primitive Rectangles instead of normal hori‐
	      zontal ones.

       -mvec  Create both horizontal and vertical Primitive Rectangles concur‐
	      rently.	Horizontal  and	 vertical  rectangles  are  written on
	      out_file and out_file2 respectively.

       -d8    Create 8-dimensional (8-tuple) file. (This is experimental.)

       -llim N
	      Suppress writing Primitive Rectangles each of  whose  height  is
	      less than N. The default is N=1.

       -ulim N
	      Suppress	writing	 Primitive  Rectangles each of whose height is
	      more than N. The default is N=32767.

SEE ALSO
       pbm(5), d4file(4)

REFERENCES
       "Robust and Fast Text-line Extraction  Using  Local  Linearity  of  the
       Text-line"  by  Hideaki	Goto  and  Hirotomo  Aso, Trans. IEICE (D-II),
       Vol.J78-D-II, No.3, pp.465-473, March 1995.  (In Japanese)

       Or its translated version,

       "Robust and Fast Text-line Extraction  Using  Local  Linearity  of  the
       Text-line"  by  Hideaki Goto and Hirotomo Aso, Systems and Computers in
       Japan, Vol.26, No.13, pp.21-31, 1995, Scripta Technica, Inc.

AUTHOR
       Copyright (C) 1995-2009 Hideaki Goto

       http://www.imglab.org/

				   June 2009			     makepr(1)

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