/usr/include/libhocr/ho_array_hist.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_array_hist.h
*
* Fri Aug 12 20:13:33 2005
* Copyright 2005-2008 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_array_hist.h
@brief libhocr C language header.
libhocr - LIBrary for Hebrew Optical Character Recognition
*/
#ifndef HO_ARRAY_HIST_H
#define HO_ARRAY_HIST_H 1
#include <ho_pixbuf.h>
#include <ho_bitmap.h>
#include <ho_array.h>
/** @struct ho_array_hist
@brief libhocr array histogram struct
*/
typedef struct
{
int size;
double *data;
} ho_array_hist;
/**
new ho_array_hist
@param size the number of buckets in the histogram
@return newly allocated ho_array_hist
*/
ho_array_hist *ho_array_hist_new (const int size);
/**
free an ho_array_hist
@param hist pointer to an ho_array_hist
@return FALSE
*/
int ho_array_hist_free (ho_array_hist * hist);
/**
calculate ho_array_hist from ho_array
@param hist the histogram to init
@param ar the ho_array to use
@return FALSE
*/
unsigned char ho_array_hist_init (ho_array_hist * hist, const ho_array * ar);
/**
new ho_array_hist from ho_array data
@param size the number of buckets in the histogram
@param ar the ho_array to use
@return newly allocated ho_array_hist
*/
ho_array_hist *ho_array_hist_new_from_array (const int size,
const ho_array * ar);
/**
get data from a ho_array_hist
@param hist pointer to a ho_array_hist
@param i the bucket index
@return the value of the histogram
*/
double ho_array_hist_get_at (const ho_array_hist * hist, int i);
/**
new ho_array from ho_array_hist
@param hist pointer to an ho_array_hist
@return newly allocated ho_array
*/
ho_array *ho_array_hist_to_array (const ho_array_hist * hist);
#endif /* HO_ARRAY_HIST_H */
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