/usr/include/libhocr/ho_segment.h is in libhocr-dev 0.10.17-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* ho_segment.h
*
* Fri Aug 12 20:13:33 2005
* Copyright 2005-2007 Yaacov Zamir
* <kzamir@walla.co.il>
****************************************************************************/
/*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/** @file ho_segment.h
@brief libhocr C language header.
libhocr - LIBrary for Hebrew Optical Character Recognition
*/
#ifndef HO_SEGMENT_H
#define HO_SEGMENT_H 1
#include <ho_bitmap.h>
#include <ho_objmap.h>
/**
return a bitmap of the paragraphs,
font and line dimentions _must_ be set
@param m pointer to an ho_bitmap
@param box squre (boxes) or free formed text blocks
@param font_height_factor_min filter objects height min
@param font_height_factor_max filter objects height max
@param font_width_factor_min filter objects width min
@param font_width_factor_max filter objects width max
@param horizontal_link_factor link horizontaly factor
@param vertical_link_factor link verticaly factor
@return a newly allocated bitmap
*/
ho_bitmap *ho_segment_paragraphs_fine (const ho_bitmap * m,
const unsigned char box, const double font_height_factor_min,
const double font_height_factor_max, const double font_width_factor_min,
const double font_width_factor_max, const double horizontal_link_factor,
const double vertical_link_factor);
/**
return a bitmap of the paragraphs,
font and line dimentions _must_ be set
@param m pointer to an ho_bitmap
@param box squre (boxes) or free formed text blocks
@return a newly allocated bitmap
*/
ho_bitmap *ho_segment_paragraphs (const ho_bitmap * m, const unsigned char box);
/**
return a bitmap of the lines
@param m pointer to an ho_bitmap
@param font_height_factor_min filter objects height min
@param font_height_factor_max filter objects height max
@param font_width_factor_min filter objects width min
@param font_width_factor_max filter objects width max
@param link_arg factor for linking letters in line
@param link_arg_2 factor for linking letters in line
@param extend_arg factor for extemding lines horizontaly
@param extend_arg_2 factor for extemding lines horizontaly
@param erode_arg factor for eroding line sourface
@return a newly allocated bitmap
*/
ho_bitmap *ho_segment_lines_fine (const ho_bitmap * m,
const double font_height_factor_min, const double font_height_factor_max,
const double font_width_factor_min, const double font_width_factor_max,
const double link_arg, const double link_arg_2,
const double extend_arg, const double extend_arg_2, const double erode_arg);
/**
return a bitmap of the lines
@param m pointer to an ho_bitmap
@return a newly allocated bitmap
*/
ho_bitmap *ho_segment_lines (const ho_bitmap * m);
/**
return a bitmap of the words
@param m pointer to an ho_bitmap of line
@param m_line_map pointer to an ho_bitmap of line box
@param horizontal_link_factor horizontal link factor
@param top_frame_factor top frame factor
@param bottom_frame_factor bottom frame factor
@return a newly allocated bitmap
*/
ho_bitmap *ho_segment_words_fine (const ho_bitmap * m,
const ho_bitmap * m_line_map, const double horizontal_link_factor,
const double top_frame_factor, const double bottom_frame_factor);
/**
return a bitmap of the words
@param m pointer to an ho_bitmap of text
@param m_line_map pointer to an ho_bitmap of line
@param font_spacing_code -1:tight 0:normal 1:spaced fonts
@return a newly allocated bitmap
*/
ho_bitmap *ho_segment_words (const ho_bitmap * m, const ho_bitmap * m_line_map,
const char font_spacing_code);
/**
return a bitmap of the interfont spaces
@param m pointer to an ho_bitmap of text
@param m_line_map pointer to an ho_bitmap of line
@param slicing_threshold percent of line fill declared space between fonts
@param slicing_width percent of font width above try to choop font in two
@param line_leeway percent of line height to use above and below line
@return a newly allocated bitmap
*/
ho_bitmap *ho_segment_fonts (const ho_bitmap * m,
const ho_bitmap * m_line_map,
const unsigned char slicing_threshold, const unsigned char slicing_width,
const unsigned char line_leeway);
#endif /* HO_SEGMENT_H */
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