cv::MatIterator_< _Tp > Class Template Reference

Matrix read-write iterator. More...

#include <opencv2/core/mat.hpp>

Collaboration diagram for cv::MatIterator_< _Tp >:

Public Types
typedef std::random_access_iterator_tag	iterator_category
typedef _Tp *	pointer
typedef _Tp &	reference
Public Types inherited from cv::MatConstIterator_< _Tp >
typedef ptrdiff_t	difference_type
typedef std::random_access_iterator_tag	iterator_category
typedef const _Tp *	pointer
typedef const _Tp &	reference
typedef _Tp	value_type
Public Types inherited from cv::MatConstIterator
typedef ptrdiff_t	difference_type
typedef std::random_access_iterator_tag	iterator_category
typedef const uchar **	pointer
typedef uchar *	reference
typedef uchar *	value_type

Public Member Functions
	MatIterator_ ()
	the default constructor
	MatIterator_ (const MatIterator_ &it)
	copy constructor
	MatIterator_ (Mat_< _Tp > *_m)
	constructor that sets the iterator to the beginning of the matrix
	MatIterator_ (Mat_< _Tp > *_m, const int *_idx)
	constructor that sets the iterator to the specified element of the matrix
	MatIterator_ (Mat_< _Tp > *_m, int _row, int _col=0)
	constructor that sets the iterator to the specified element of the matrix
	MatIterator_ (Mat_< _Tp > *_m, Point _pt)
	constructor that sets the iterator to the specified element of the matrix
_Tp &	operator* () const
	returns the current matrix element
MatIterator_ &	operator++ ()
	increments the iterator
MatIterator_	operator++ (int)
	increments the iterator
MatIterator_ &	operator+= (ptrdiff_t ofs)
	shifts the iterator forward by the specified number of elements
MatIterator_ &	operator-- ()
	decrements the iterator
MatIterator_	operator-- (int)
	decrements the iterator
MatIterator_ &	operator-= (ptrdiff_t ofs)
	shifts the iterator backward by the specified number of elements
MatIterator_ &	operator= (const MatIterator_< _Tp > &it)
	copy operator
_Tp &	operator[] (ptrdiff_t i) const
	returns the i-th matrix element, relative to the current
Public Member Functions inherited from cv::MatConstIterator_< _Tp >
	MatConstIterator_ ()
	default constructor
	MatConstIterator_ (const Mat_< _Tp > *_m)
	constructor that sets the iterator to the beginning of the matrix
	MatConstIterator_ (const Mat_< _Tp > *_m, const int *_idx)
	constructor that sets the iterator to the specified element of the matrix
	MatConstIterator_ (const Mat_< _Tp > *_m, int _row, int _col=0)
	constructor that sets the iterator to the specified element of the matrix
	MatConstIterator_ (const Mat_< _Tp > *_m, Point _pt)
	constructor that sets the iterator to the specified element of the matrix
	MatConstIterator_ (const MatConstIterator_ &it)
	copy constructor
const _Tp &	operator* () const
	returns the current matrix element
MatConstIterator_ &	operator++ ()
	increments the iterator
MatConstIterator_	operator++ (int)
	increments the iterator
MatConstIterator_ &	operator+= (ptrdiff_t ofs)
	shifts the iterator forward by the specified number of elements
MatConstIterator_ &	operator-- ()
	decrements the iterator
MatConstIterator_	operator-- (int)
	decrements the iterator
MatConstIterator_ &	operator-= (ptrdiff_t ofs)
	shifts the iterator backward by the specified number of elements
MatConstIterator_ &	operator= (const MatConstIterator_ &it)
	copy operator
const _Tp &	operator[] (ptrdiff_t i) const
	returns the i-th matrix element, relative to the current
Point	pos () const
	returns the current iterator position
Public Member Functions inherited from cv::MatConstIterator
	MatConstIterator ()
	default constructor
	MatConstIterator (const Mat *_m)
	constructor that sets the iterator to the beginning of the matrix
	MatConstIterator (const Mat *_m, const int *_idx)
	constructor that sets the iterator to the specified element of the matrix
	MatConstIterator (const Mat *_m, int _row, int _col=0)
	constructor that sets the iterator to the specified element of the matrix
	MatConstIterator (const Mat *_m, Point _pt)
	constructor that sets the iterator to the specified element of the matrix
	MatConstIterator (const MatConstIterator &it)
	copy constructor
ptrdiff_t	lpos () const
const uchar *	operator* () const
	returns the current matrix element
MatConstIterator &	operator++ ()
	increments the iterator
MatConstIterator	operator++ (int)
	increments the iterator
MatConstIterator &	operator+= (ptrdiff_t ofs)
	shifts the iterator forward by the specified number of elements
MatConstIterator &	operator-- ()
	decrements the iterator
MatConstIterator	operator-- (int)
	decrements the iterator
MatConstIterator &	operator-= (ptrdiff_t ofs)
	shifts the iterator backward by the specified number of elements
MatConstIterator &	operator= (const MatConstIterator &it)
	copy operator
const uchar *	operator[] (ptrdiff_t i) const
	returns the i-th matrix element, relative to the current
Point	pos () const
	returns the current iterator position
void	pos (int *_idx) const
	returns the current iterator position
void	seek (const int *_idx, bool relative=false)
void	seek (ptrdiff_t ofs, bool relative=false)

Additional Inherited Members
Public Attributes inherited from cv::MatConstIterator
size_t	elemSize
const Mat *	m
const uchar *	ptr
const uchar *	sliceEnd
const uchar *	sliceStart

Detailed Description

template<typename _Tp>
class cv::MatIterator_< _Tp >

Matrix read-write iterator.

Examples

samples/cpp/tutorial_code/core/how_to_scan_images/how_to_scan_images.cpp.

Member Typedef Documentation

iterator_category

template<typename _Tp >

std::random_access_iterator_tag cv::MatIterator_< _Tp >::iterator_category

pointer

template<typename _Tp >

_Tp* cv::MatIterator_< _Tp >::pointer

reference

template<typename _Tp >

_Tp& cv::MatIterator_< _Tp >::reference

Constructor & Destructor Documentation

MatIterator_() [1/6]

template<typename _Tp >

cv::MatIterator_< _Tp >::MatIterator_

(

)

the default constructor

MatIterator_() [2/6]

template<typename _Tp >

cv::MatIterator_< _Tp >::MatIterator_

(

Mat_< _Tp > *

_m

)

constructor that sets the iterator to the beginning of the matrix

MatIterator_() [3/6]

template<typename _Tp >

cv::MatIterator_< _Tp >::MatIterator_	(	Mat_< _Tp > *	_m,
		int	_row,
		int	_col = 0 )

constructor that sets the iterator to the specified element of the matrix

MatIterator_() [4/6]

template<typename _Tp >

cv::MatIterator_< _Tp >::MatIterator_	(	Mat_< _Tp > *	_m,
		Point	_pt )

constructor that sets the iterator to the specified element of the matrix

MatIterator_() [5/6]

template<typename _Tp >

cv::MatIterator_< _Tp >::MatIterator_	(	Mat_< _Tp > *	_m,
		const int *	_idx )

constructor that sets the iterator to the specified element of the matrix

MatIterator_() [6/6]

template<typename _Tp >

cv::MatIterator_< _Tp >::MatIterator_

(

const MatIterator_< _Tp > &

it

)

copy constructor

Member Function Documentation

operator*()

template<typename _Tp >

_Tp & cv::MatIterator_< _Tp >::operator*

(

)

const

returns the current matrix element

operator++() [1/2]

template<typename _Tp >

MatIterator_ & cv::MatIterator_< _Tp >::operator++

(

)

increments the iterator

operator++() [2/2]

template<typename _Tp >

MatIterator_ cv::MatIterator_< _Tp >::operator++

(

int

)

increments the iterator

operator+=()

template<typename _Tp >

MatIterator_ & cv::MatIterator_< _Tp >::operator+=

(

ptrdiff_t

ofs

)

shifts the iterator forward by the specified number of elements

operator--() [1/2]

template<typename _Tp >

MatIterator_ & cv::MatIterator_< _Tp >::operator--

(

)

decrements the iterator

operator--() [2/2]

template<typename _Tp >

MatIterator_ cv::MatIterator_< _Tp >::operator--

(

int

)

decrements the iterator

operator-=()

template<typename _Tp >

MatIterator_ & cv::MatIterator_< _Tp >::operator-=

(

ptrdiff_t

ofs

)

shifts the iterator backward by the specified number of elements

operator=()

template<typename _Tp >

MatIterator_ & cv::MatIterator_< _Tp >::operator=

(

const MatIterator_< _Tp > &

it

)

copy operator

operator[]()

template<typename _Tp >

_Tp & cv::MatIterator_< _Tp >::operator[]

(

ptrdiff_t

i

)

const

returns the i-th matrix element, relative to the current

---

The documentation for this class was generated from the following file:

• opencv2/core/mat.hpp