/usr/include/libhocr/ho_font.h is in libhocr-dev 0.10.17-1.
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_font.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_font.h
@brief libhocr C language header.
libhocr - LIBrary for Hebrew Optical Character Recognition
*/
#ifndef HO_FONT_H
#define HO_FONT_H 1
#include <ho_bitmap.h>
#include <ho_objmap.h>
/**
return a bitmap of the main signs in the font
@param m_text pointer to the text bitmap
@param m_mask pointer to the line map
@return a newly allocated bitmap
*/
ho_bitmap *ho_font_main_sign (const ho_bitmap * m_text,
const ho_bitmap * m_mask);
/**
return a bitmap of the second object sign in the font
@param m_text pointer to the text bitmap
@param m_mask pointer to the line map
@return a newly allocated bitmap
*/
ho_bitmap *ho_font_second_object (const ho_bitmap * m_text,
const ho_bitmap * m_mask);
/**
return a bitmap of holes in the bitmap
@param m_text pointer to the text bitmap
@param m_mask pointer to the line map
@return a newly allocated bitmap
*/
ho_bitmap *ho_font_holes (const ho_bitmap * m_text, const ho_bitmap * m_mask);
/**
return a bitmap of horizontal bars found in the bitmap
@param m_text pointer to the text bitmap
@param m_mask pointer to the line map
@return a newly allocated bitmap
*/
ho_bitmap *ho_font_hbars (const ho_bitmap * m_text, const ho_bitmap * m_mask);
/**
return a bitmap of vertical bars found in the bitmap
@param m_text pointer to the text bitmap
@param m_mask pointer to the line map
@return a newly allocated bitmap
*/
ho_bitmap *ho_font_vbars (const ho_bitmap * m_text, const ho_bitmap * m_mask);
/**
return a bitmap of -45 deg. diagonals found in the bitmap
@param m_text pointer to the text bitmap
@param m_mask pointer to the line map
@return a newly allocated bitmap
*/
ho_bitmap *ho_font_diagonal (const ho_bitmap * m_text,
const ho_bitmap * m_mask);
/**
return a bitmap of +45 deg. diagonals found in the bitmap
@param m_text pointer to the text bitmap
@param m_mask pointer to the line map
@return a newly allocated bitmap
*/
ho_bitmap *ho_font_diagonal_left (const ho_bitmap * m_text,
const ho_bitmap * m_mask);
/**
return a thinned bitmap without fixing artefacts
@param m_text pointer to the text bitmap
@param m_mask pointer to the line map
@return a newly allocated bitmap
*/
ho_bitmap *ho_font_thin_naive (const ho_bitmap * m_text,
const ho_bitmap * m_mask);
/**
return a thinned bitmap and fix artefacts
@param m_text pointer to the text bitmap
@param m_mask pointer to the line map
@return a newly allocated bitmap
*/
ho_bitmap *ho_font_thin (const ho_bitmap * m_text, const ho_bitmap * m_mask);
/**
return a bitmap of cross points in input image
@param m_text pointer to the text bitmap
@param m_mask pointer to the line map
@return a newly allocated bitmap
*/
ho_bitmap *ho_font_cross (const ho_bitmap * m_text, const ho_bitmap * m_mask);
/**
return a bitmap of end points in input image
@param m_text pointer to the text bitmap
@param m_mask pointer to the line map
@return a newly allocated bitmap
*/
ho_bitmap *ho_font_ends (const ho_bitmap * m_text, const ho_bitmap * m_mask);
/**
return a bitmap of top side picks in the font
@param m_text pointer to the text bitmap
@param m_mask pointer to the line map
@return a newly allocated bitmap
*/
ho_bitmap *ho_font_edges_top (const ho_bitmap * m_text,
const ho_bitmap * m_mask);
/**
return a bitmap of big top side picks in the font
@param m_text pointer to the text bitmap
@param m_mask pointer to the line map
@return a newly allocated bitmap
*/
ho_bitmap *ho_font_edges_top_big (const ho_bitmap * m_text,
const ho_bitmap * m_mask);
/**
return a bitmap of bottom side picks in the font
@param m_text pointer to the text bitmap
@param m_mask pointer to the line map
@return a newly allocated bitmap
*/
ho_bitmap *ho_font_edges_bottom (const ho_bitmap * m_text,
const ho_bitmap * m_mask);
/**
return a bitmap of big bottom side picks in the font
@param m_text pointer to the text bitmap
@param m_mask pointer to the line map
@return a newly allocated bitmap
*/
ho_bitmap *ho_font_edges_bottom_big (const ho_bitmap * m_text,
const ho_bitmap * m_mask);
/**
return a bitmap of left side picks in the font
@param m_text pointer to the text bitmap
@param m_mask pointer to the line map
@return a newly allocated bitmap
*/
ho_bitmap *ho_font_edges_left (const ho_bitmap * m_text,
const ho_bitmap * m_mask);
/**
return a bitmap of big left side picks in the font
@param m_text pointer to the text bitmap
@param m_mask pointer to the line map
@return a newly allocated bitmap
*/
ho_bitmap *ho_font_edges_left_big (const ho_bitmap * m_text,
const ho_bitmap * m_mask);
/**
return a bitmap of right side picks in the font
@param m_text pointer to the text bitmap
@param m_mask pointer to the line map
@return a newly allocated bitmap
*/
ho_bitmap *ho_font_edges_right (const ho_bitmap * m_text,
const ho_bitmap * m_mask);
/**
return a bitmap of big right side picks in the font
@param m_text pointer to the text bitmap
@param m_mask pointer to the line map
@return a newly allocated bitmap
*/
ho_bitmap *ho_font_edges_right_big (const ho_bitmap * m_text,
const ho_bitmap * m_mask);
/**
return a bitmap of top side notches in the font
@param m_text pointer to the text bitmap
@param m_mask pointer to the line map
@return a newly allocated bitmap
*/
ho_bitmap *ho_font_notch_top (const ho_bitmap * m_text,
const ho_bitmap * m_mask);
/**
return a bitmap of bottom side notches in the font
@param m_text pointer to the text bitmap
@param m_mask pointer to the line map
@return a newly allocated bitmap
*/
ho_bitmap *ho_font_notch_bottom (const ho_bitmap * m_text,
const ho_bitmap * m_mask);
/**
return a bitmap of left side notches in the font
@param m_text pointer to the text bitmap
@param m_mask pointer to the line map
@return a newly allocated bitmap
*/
ho_bitmap *ho_font_notch_left (const ho_bitmap * m_text,
const ho_bitmap * m_mask);
/**
return a bitmap of right side notches in the font
@param m_text pointer to the text bitmap
@param m_mask pointer to the line map
@return a newly allocated bitmap
*/
ho_bitmap *ho_font_notch_right (const ho_bitmap * m_text,
const ho_bitmap * m_mask);
/**
return a bitmap of a filter
@param m_text pointer to the text bitmap
@param m_mask pointer to the line map
@param filter_index the index of the filter to use
@return a newly allocated bitmap
*/
ho_bitmap *ho_font_filter (const ho_bitmap * m_text,
const ho_bitmap * m_mask, int filter_index);
/**
return a bitmap of a filter used on font holes
@param m_text pointer to the text bitmap
@param m_mask pointer to the line map
@param filter_index the index of the filter to use
@return a newly allocated bitmap
*/
ho_bitmap *ho_font_holes_filter (const ho_bitmap * m_text,
const ho_bitmap * m_mask, int filter_index);
/**
writes font to file
@param m_text ho_bitmap of main font
@param m_nikud ho_bitmap of nikud
@param m_mask ho_bitmap of line
@param filename save as file name
@return FALSE
*/
int
ho_font_pnm_save (const ho_bitmap * m_text, const ho_bitmap * m_nikud,
const ho_bitmap * m_mask, const char *filename);
/**
read ho_pixbuf from file
@param m_text pointer to return ho_bitmap of main font
@param m_nikud pointer to return ho_bitmap of nikud
@param m_mask pointer to return ho_bitmap of line
@param filename file name
@return newly allocated ho_pixbuf
*/
int
ho_font_pnm_load (ho_bitmap ** m_text, ho_bitmap ** m_nikud,
ho_bitmap ** m_mask, const char *filename);
#endif /* HO_FONT_H */
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