leptonica(3) [debian man page]

LEPTONICA(3)						     Library Functions Manual						      LEPTONICA(3)

NAME

       leptonica - image processing library

SYNOPSIS

       #include <leptonica/allheaders.h>

       cc file.c -llept

DESCRIPTION

       This manual page documents briefly the leptonica image processing library.

       Leptonica  is a well-tested C library for some basic image processing operations, along with a description of the functions and some design
       methods. A full set of affine transformations (translation, shear, rotation, scaling) on images of all depths is included, with the  excep-
       tion that some of the scaling methods do not work at all depths. There are also implementations of binary morphology, grayscale morphology,
       convolution and rank order filters, and applications such as jbig2 image processing and color quantization. You will also find basic utili-
       ties  for the safe and efficient handling of arrays (of strings, numbers, number pairs and image-related geometrical objects), byte queues,
       generic stacks, generic lists, and endian-independent indexing into 32-bit arrays.

OPTIONS

       The example programs included with leptonica will report their usage if you try to run them on the command line with no	arguements.  Usage
       varies from program to program. These are sample programs; read their source code if you are trying to do something similar.

SEE ALSO

       binarize_reg(1), cctest1(1), ccthin1_reg(1), colormorphtest(1), colorquant_reg(1), colorspacetest(1), comparetest(1), convertfilestopdf(1),
       convertfilestops(1), convertformat(1), converttops(1), dewarp_reg(1), distance_reg(1), dithertest(1), fileinfo(1), flipdetect_reg(1), fmor-
       phauto_reg(1),  gammatest(1),  grayfill_reg(1),	graymorph1_reg(1), grayquant_reg(1), hardlight_reg(1), ioformats_reg(1), jbcorrelation(1),
       kernel_reg(1), lineremoval(1), maze_reg(1), pagesegtest1(1),  paint_reg(1),  paintmask_reg(1),  printimage(1),  printsplitimage(1),  print-
       tiff(1), rank_reg(1), ranktest(1), scale_reg(1), skewtest(1), splitcomp_reg(1), warper_reg(1), watershedtest(1), xtractprotos(1)

       The library and sample programs are documented more fully by http://www.leptonica.com, available via your favorite web user agent.

AUTHOR

       leptonica was written by Dan Bloomberg <bloomberg@ieee.org>.

       This manual page was written by Jeff Breidenbach <jab@debian.org>, for the Debian project (but may be used by others).

								   June 27, 2006						      LEPTONICA(3)

EMPTY-PAGE(1)							 ExactImage Manual						     EMPTY-PAGE(1)

NAME

       empty-page - empty page detector of the ExactImage toolkit

SYNOPSIS

       empty-page [option...] {-i | --input} input-file

       empty-page {-h | --help}

DESCRIPTION

       ExactImage is a fast C++ image processing library. Unlike many other library frameworks it allows operation in several color spaces and bit
       depths natively, resulting in low memory and computational requirements.

       empty-page counts dark pixels of a black and white image and decides with a threshold whether the page is most probably empty, and thus can
       be removed from the image processing stream.

OPTIONS

       -i file, --input file
	   Read image from the specified file.

       -m n, --margin n
	   Set width of border margin to skip. For speed reasons, the margin has to be a multiple of 8. The default is 16.

       -p x, --percentage x
	   Set fraction of permissible dark pixels. The default is 0.05 (5%).

       -h, --help
	   Display help text and exit.

EXAMPLES

	   $ empty-page -i test.tif
	   The image has 75461 dark pixels from a total of 1060992 (7.11231%).
	   non-empty

EXIT STATUS

       The exit status is 0 if the image is mostly white, 1 otherwise.

SEE ALSO

       exactimage(7)

AUTHORS

       Jakub Wilk <jwilk@debian.org>
	   Wrote this manual page for the Debian system.

       http://www.exactcode.de/site/open_source/exactimage/
	   This manual page incorporates texts found on the ExactImage homepage.

COPYRIGHT

       This manual page was written for the Debian system (and may be used by others).

       Permission is granted to copy, distribute and/or modify this document under the terms of the GNU General Public License, Version 2 or (at
       your option) any later version published by the Free Software Foundation.

       On Debian systems, the complete text of the GNU General Public License can be found in /usr/share/common-licenses/GPL-2.

empty-page							    09/09/2013							     EMPTY-PAGE(1)