cv::Scalar_< _Tp > Class Template Reference

Template class for a 4-element vector derived from Vec. More...

#include <opencv2/core/types.hpp>

Public Member Functions
	Scalar_ ()
	default constructor
	Scalar_ (_Tp v0)
	Scalar_ (_Tp v0, _Tp v1, _Tp v2=0, _Tp v3=0)
	Scalar_ (const Scalar_ &s)
template<typename _Tp2, int cn>
	Scalar_ (const Vec< _Tp2, cn > &v)
	Scalar_ (Scalar_ &&s) CV_NOEXCEPT
Scalar_< _Tp >	conj () const
	returns (v0, -v1, -v2, -v3)
bool	isReal () const
	returns true iff v1 == v2 == v3 == 0
Scalar_< _Tp >	mul (const Scalar_< _Tp > &a, double scale=1) const
	per-element product
template<typename T2>
	operator Scalar_< T2 > () const
	conversion to another data type
Scalar_ &	operator= (const Scalar_ &s)
Scalar_ &	operator= (Scalar_ &&s) CV_NOEXCEPT
Public Member Functions inherited from cv::Vec< _Tp, 4 >
	Vec ()
	default constructor
Vec	conj () const
	conjugation (makes sense for complex numbers and quaternions)
Vec	cross (const Vec &v) const
Vec	mul (const Vec< _Tp, cn > &v) const
	per-element multiplication
	operator Vec< T2, cn > () const
	conversion to another data type
const _Tp &	operator() (int i) const
Vec< _Tp, cn > &	operator= (const Vec< _Tp, cn > &rhs)=default
const _Tp &	operator[] (int i) const
Public Member Functions inherited from cv::Matx< _Tp, cn, 1 >
	Matx ()
	default constructor
Matx< _Tp, m, 1 >	col (int i) const
	extract the matrix column
double	ddot (const Matx< _Tp, m, n > &v) const
	dot product computed in double-precision arithmetics
Matx< _Tp, m, n >	div (const Matx< _Tp, m, n > &a) const
	divide two matrices element-wise
_Tp	dot (const Matx< _Tp, m, n > &v) const
	dot product computed with the default precision
Matx< _Tp, m1, n1 >	get_minor (int base_row, int base_col) const
	extract part of the matrix
Matx< _Tp, n, m >	inv (int method=DECOMP_LU, bool *p_is_ok=NULL) const
	invert the matrix
Matx< _Tp, m, n >	mul (const Matx< _Tp, m, n > &a) const
	multiply two matrices element-wise
	operator Matx< T2, m, n > () const
	conversion to another data type
const _Tp &	operator() (int row, int col) const
	element access
Matx< _Tp, m1, n1 >	reshape () const
	change the matrix shape
Matx< _Tp, 1, n >	row (int i) const
	extract the matrix row
Matx< _Tp, n, l >	solve (const Matx< _Tp, m, l > &rhs, int flags=DECOMP_LU) const
	solve linear system
Matx< _Tp, n, m >	t () const
	transpose the matrix

Static Public Member Functions
static Scalar_< _Tp >	all (_Tp v0)
	returns a scalar with all elements set to v0
Static Public Member Functions inherited from cv::Vec< _Tp, 4 >
static Vec	all (_Tp alpha)
static Vec	diag (_Tp alpha)=delete
static Vec	eye ()=delete
static Vec	ones ()
static Vec	randn (_Tp a, _Tp b)
static Vec	randu (_Tp a, _Tp b)
static Vec	zeros ()
Static Public Member Functions inherited from cv::Matx< _Tp, cn, 1 >
static CV_NODISCARD_STD Matx	all (_Tp alpha)
static CV_NODISCARD_STD Matx	diag (const diag_type &d)
static CV_NODISCARD_STD Matx	eye ()
static CV_NODISCARD_STD Matx	ones ()
static CV_NODISCARD_STD Matx	randn (_Tp a, _Tp b)
	Generates normally distributed random numbers.
static CV_NODISCARD_STD Matx	randu (_Tp a, _Tp b)
	Generates uniformly distributed random numbers.
static CV_NODISCARD_STD Matx	zeros ()

Additional Inherited Members
Public Types inherited from cv::Vec< _Tp, 4 >
enum
typedef _Tp	value_type
Public Types inherited from cv::Matx< _Tp, cn, 1 >
enum
typedef Matx< _Tp, shortdim, 1 >	diag_type
typedef Matx< _Tp, m, n >	mat_type
typedef _Tp	value_type
Public Attributes inherited from cv::Matx< _Tp, cn, 1 >
_Tp	val [m *n]
	matrix elements

Detailed Description

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

Template class for a 4-element vector derived from Vec.

Being derived from Vec<_Tp, 4> , Scalar_ and Scalar can be used just as typical 4-element vectors. In addition, they can be converted to/from CvScalar . The type Scalar is widely used in OpenCV to pass pixel values.

Constructor & Destructor Documentation

Scalar_() [1/6]

template<typename _Tp>

cv::Scalar_< _Tp >::Scalar_

(

)

default constructor

Scalar_() [2/6]

template<typename _Tp>

cv::Scalar_< _Tp >::Scalar_	(	_Tp	v0,
		_Tp	v1,
		_Tp	v2 = 0,
		_Tp	v3 = 0 )

Scalar_() [3/6]

template<typename _Tp>

cv::Scalar_< _Tp >::Scalar_

(

_Tp

v0

)

Scalar_() [4/6]

template<typename _Tp>

cv::Scalar_< _Tp >::Scalar_

(

const Scalar_< _Tp > &

s

)

Scalar_() [5/6]

template<typename _Tp>

cv::Scalar_< _Tp >::Scalar_

(

Scalar_< _Tp > &&

s

)

Scalar_() [6/6]

template<typename _Tp>

template<typename _Tp2, int cn>

cv::Scalar_< _Tp >::Scalar_

(

const Vec< _Tp2, cn > &

v

)

Member Function Documentation

all()

template<typename _Tp>

Scalar_< _Tp > cv::Scalar_< _Tp >::all ( _Tp v0 )

static

returns a scalar with all elements set to v0

conj()

template<typename _Tp>

Scalar_< _Tp > cv::Scalar_< _Tp >::conj

(

)

const

returns (v0, -v1, -v2, -v3)

isReal()

template<typename _Tp>

bool cv::Scalar_< _Tp >::isReal

(

)

const

returns true iff v1 == v2 == v3 == 0

mul()

template<typename _Tp>

Scalar_< _Tp > cv::Scalar_< _Tp >::mul	(	const Scalar_< _Tp > &	a,
		double	scale = 1 ) const

per-element product

operator Scalar_< T2 >()

template<typename _Tp>

template<typename T2>

cv::Scalar_< _Tp >::operator Scalar_< T2 >

(

)

const

conversion to another data type

operator=() [1/2]

template<typename _Tp>

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

(

const Scalar_< _Tp > &

s

)

operator=() [2/2]

template<typename _Tp>

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

(

Scalar_< _Tp > &&

s

)

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

• opencv2/core/types.hpp