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// Copyright (C) 2009 Davis E. King (davis@dlib.net)
// License: Boost Software License See LICENSE.txt for the full license.
#ifndef DLIB_CvIMAGE_H_
#define DLIB_CvIMAGE_H_
#include <opencv2/core/core.hpp>
#include <opencv2/core/types_c.h>
#include "cv_image_abstract.h"
#include "../algs.h"
#include "../pixel.h"
#include "../matrix/matrix_mat.h"
#include "../image_processing/generic_image.h"
namespace dlib
{
template <
typename pixel_type
>
class cv_image
{
public:
typedef pixel_type type;
typedef default_memory_manager mem_manager_type;
cv_image (const cv::Mat img)
{
DLIB_CASSERT(img.depth() == cv::DataType<typename pixel_traits<pixel_type>::basic_pixel_type>::depth &&
img.channels() == pixel_traits<pixel_type>::num,
"The pixel type you gave doesn't match pixel used by the open cv Mat object."
<< "\n\t img.depth(): " << img.depth()
<< "\n\t img.cv::DataType<typename pixel_traits<pixel_type>::basic_pixel_type>::depth: "
<< cv::DataType<typename pixel_traits<pixel_type>::basic_pixel_type>::depth
<< "\n\t img.channels(): " << img.channels()
<< "\n\t img.pixel_traits<pixel_type>::num: " << pixel_traits<pixel_type>::num
);
IplImage temp = img;
init(&temp);
}
cv_image (const IplImage img)
{
init(&img);
}
cv_image (const IplImage* img)
{
init(img);
}
cv_image() : _data(0), _widthStep(0), _nr(0), _nc(0) {}
size_t size () const { return static_cast<size_t>(_nr*_nc); }
inline pixel_type* operator[](const long row )
{
// make sure requires clause is not broken
DLIB_ASSERT(0 <= row && row < nr(),
"\tpixel_type* cv_image::operator[](row)"
<< "\n\t you have asked for an out of bounds row "
<< "\n\t row: " << row
<< "\n\t nr(): " << nr()
<< "\n\t this: " << this
);
return reinterpret_cast<pixel_type*>( _data + _widthStep*row);
}
inline const pixel_type* operator[](const long row ) const
{
// make sure requires clause is not broken
DLIB_ASSERT(0 <= row && row < nr(),
"\tconst pixel_type* cv_image::operator[](row)"
<< "\n\t you have asked for an out of bounds row "
<< "\n\t row: " << row
<< "\n\t nr(): " << nr()
<< "\n\t this: " << this
);
return reinterpret_cast<const pixel_type*>( _data + _widthStep*row);
}
inline const pixel_type& operator()(const long row, const long column) const
{
DLIB_ASSERT(0<= column && column < nc(),
"\tcont pixel_type& cv_image::operator()(const long rown const long column)"
<< "\n\t you have asked for an out of bounds column "
<< "\n\t column: " << column
<< "\n\t nc(): " << nc()
<< "\n\t this: " << this
);
return (*this)[row][column];
}
inline pixel_type& operator()(const long row, const long column)
{
DLIB_ASSERT(0<= column && column < nc(),
"\tcont pixel_type& cv_image::operator()(const long rown const long column)"
<< "\n\t you have asked for an out of bounds column "
<< "\n\t column: " << column
<< "\n\t nc(): " << nc()
<< "\n\t this: " << this
);
return (*this)[row][column];
}
long nr() const { return _nr; }
long nc() const { return _nc; }
long width_step() const { return _widthStep; }
cv_image& operator=( const cv_image& item)
{
_data = item._data;
_widthStep = item._widthStep;
_nr = item._nr;
_nc = item._nc;
return *this;
}
cv_image& operator=( const IplImage* img)
{
init(img);
return *this;
}
cv_image& operator=( const IplImage img)
{
init(&img);
return *this;
}
cv_image& operator=( const cv::Mat img)
{
IplImage temp = img;
init(&temp);
return *this;
}
private:
void init (const IplImage* img)
{
DLIB_CASSERT( img->dataOrder == 0, "Only interleaved color channels are supported with cv_image");
DLIB_CASSERT((img->depth&0xFF)/8*img->nChannels == sizeof(pixel_type),
"The pixel type you gave doesn't match the size of pixel used by the open cv image struct");
_data = img->imageData;
_widthStep = img->widthStep;
_nr = img->height;
_nc = img->width;
}
char* _data;
long _widthStep;
long _nr;
long _nc;
};
// ----------------------------------------------------------------------------------------
template <
typename T
>
const matrix_op<op_array2d_to_mat<cv_image<T> > > mat (
const cv_image<T>& m
)
{
typedef op_array2d_to_mat<cv_image<T> > op;
return matrix_op<op>(op(m));
}
// ----------------------------------------------------------------------------------------
// Define the global functions that make cv_image a proper "generic image" according to
// ../image_processing/generic_image.h
template <typename T>
struct image_traits<cv_image<T> >
{
typedef T pixel_type;
};
template <typename T>
inline long num_rows( const cv_image<T>& img) { return img.nr(); }
template <typename T>
inline long num_columns( const cv_image<T>& img) { return img.nc(); }
template <typename T>
inline void* image_data(
cv_image<T>& img
)
{
if (img.size() != 0)
return &img[0][0];
else
return 0;
}
template <typename T>
inline const void* image_data(
const cv_image<T>& img
)
{
if (img.size() != 0)
return &img[0][0];
else
return 0;
}
template <typename T>
inline long width_step(
const cv_image<T>& img
)
{
return img.width_step();
}
// ----------------------------------------------------------------------------------------
}
#endif // DLIB_CvIMAGE_H_
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