Template class for small matrices whose type and size are known at compilation time [詳解]

#include <matx.hpp>

cv::Vec< float, 2 >に継承されています。

公開型
enum	{ rows = m , cols = n , channels = rowscols , shortdim* = (m < n ? m : n) }

typedef _Tp	value_type

typedef Matx< _Tp, m, n >	mat_type

typedef Matx< _Tp, shortdim, 1 >	diag_type

公開メンバ関数
	Matx ()
	default constructor

	Matx (_Tp v0)
	1x1 matrix

	Matx (_Tp v0, _Tp v1)
	1x2 or 2x1 matrix

	Matx (_Tp v0, _Tp v1, _Tp v2)
	1x3 or 3x1 matrix

	Matx (_Tp v0, _Tp v1, _Tp v2, _Tp v3)
	1x4, 2x2 or 4x1 matrix

	Matx (_Tp v0, _Tp v1, _Tp v2, _Tp v3, _Tp v4)
	1x5 or 5x1 matrix

	Matx (_Tp v0, _Tp v1, _Tp v2, _Tp v3, _Tp v4, _Tp v5)
	1x6, 2x3, 3x2 or 6x1 matrix

	Matx (_Tp v0, _Tp v1, _Tp v2, _Tp v3, _Tp v4, _Tp v5, _Tp v6)
	1x7 or 7x1 matrix

	Matx (_Tp v0, _Tp v1, _Tp v2, _Tp v3, _Tp v4, _Tp v5, _Tp v6, _Tp v7)
	1x8, 2x4, 4x2 or 8x1 matrix

	Matx (_Tp v0, _Tp v1, _Tp v2, _Tp v3, _Tp v4, _Tp v5, _Tp v6, _Tp v7, _Tp v8)
	1x9, 3x3 or 9x1 matrix

	Matx (_Tp v0, _Tp v1, _Tp v2, _Tp v3, _Tp v4, _Tp v5, _Tp v6, _Tp v7, _Tp v8, _Tp v9)
	1x10, 2x5 or 5x2 or 10x1 matrix

	Matx (_Tp v0, _Tp v1, _Tp v2, _Tp v3, _Tp v4, _Tp v5, _Tp v6, _Tp v7, _Tp v8, _Tp v9, _Tp v10, _Tp v11)
	1x12, 2x6, 3x4, 4x3, 6x2 or 12x1 matrix

	Matx (_Tp v0, _Tp v1, _Tp v2, _Tp v3, _Tp v4, _Tp v5, _Tp v6, _Tp v7, _Tp v8, _Tp v9, _Tp v10, _Tp v11, _Tp v12, _Tp v13)
	1x14, 2x7, 7x2 or 14x1 matrix

	Matx (_Tp v0, _Tp v1, _Tp v2, _Tp v3, _Tp v4, _Tp v5, _Tp v6, _Tp v7, _Tp v8, _Tp v9, _Tp v10, _Tp v11, _Tp v12, _Tp v13, _Tp v14, _Tp v15)
	1x16, 4x4 or 16x1 matrix

	Matx (const _Tp *vals)
	initialize from a plain array

	Matx (std::initializer_list< _Tp >)
	initialize from an initializer list

_Tp	dot (const Matx< _Tp, m, n > &v) const
	dot product computed with the default precision

double	ddot (const Matx< _Tp, m, n > &v) const
	dot product computed in double-precision arithmetics

template<typename T2 >
	operator Matx< T2, m, n > () const
	conversion to another data type

template<int m1, int n1>
Matx< _Tp, m1, n1 >	reshape () const
	change the matrix shape

template<int m1, int n1>
Matx< _Tp, m1, n1 >	get_minor (int base_row, int base_col) const
	extract part of the matrix

Matx< _Tp, 1, n >	row (int i) const
	extract the matrix row

Matx< _Tp, m, 1 >	col (int i) const
	extract the matrix column

diag_type	diag () const
	extract the matrix diagonal

Matx< _Tp, n, m >	t () const
	transpose the matrix

Matx< _Tp, n, m >	inv (int method=DECOMP_LU, bool *p_is_ok=NULL) const
	invert the matrix

template<int l>
Matx< _Tp, n, l >	solve (const Matx< _Tp, m, l > &rhs, int flags=DECOMP_LU) const
	solve linear system

Vec< _Tp, n >	solve (const Vec< _Tp, m > &rhs, int method) const

Matx< _Tp, m, n >	mul (const Matx< _Tp, m, n > &a) const
	multiply two matrices element-wise

Matx< _Tp, m, n >	div (const Matx< _Tp, m, n > &a) const
	divide two matrices element-wise

const _Tp &	operator() (int row, int col) const
	element access

_Tp &	operator() (int row, int col)

const _Tp &	operator() (int i) const
	1D element access

_Tp &	operator() (int i)

	Matx (const Matx< _Tp, m, n > &a, const Matx< _Tp, m, n > &b, Matx_AddOp)

	Matx (const Matx< _Tp, m, n > &a, const Matx< _Tp, m, n > &b, Matx_SubOp)

template<typename _T2 >
	Matx (const Matx< _Tp, m, n > &a, _T2 alpha, Matx_ScaleOp)

	Matx (const Matx< _Tp, m, n > &a, const Matx< _Tp, m, n > &b, Matx_MulOp)

	Matx (const Matx< _Tp, m, n > &a, const Matx< _Tp, m, n > &b, Matx_DivOp)

template<int l>
	Matx (const Matx< _Tp, m, l > &a, const Matx< _Tp, l, n > &b, Matx_MatMulOp)

	Matx (const Matx< _Tp, n, m > &a, Matx_TOp)

静的公開メンバ関数
static Matx	all (_Tp alpha)

static Matx	zeros ()

static Matx	ones ()

static Matx	eye ()

static Matx	diag (const diag_type &d)

static Matx	randu (_Tp a, _Tp b)
	Generates uniformly distributed random numbers [詳解]

static Matx	randn (_Tp a, _Tp b)
	Generates normally distributed random numbers [詳解]

公開変数類
_Tp	val [m *n]

関連関数
（これらはメソッドではありません）

template<typename _Tp1 , typename _Tp2 , int m, int n>
static Matx< _Tp1, m, n > &	operator+= (Matx< _Tp1, m, n > &a, const Matx< _Tp2, m, n > &b)

template<typename _Tp1 , typename _Tp2 , int m, int n>
static Matx< _Tp1, m, n > &	operator-= (Matx< _Tp1, m, n > &a, const Matx< _Tp2, m, n > &b)

template<typename _Tp , int m, int n>
static Matx< _Tp, m, n >	operator+ (const Matx< _Tp, m, n > &a, const Matx< _Tp, m, n > &b)

template<typename _Tp , int m, int n>
static Matx< _Tp, m, n >	operator- (const Matx< _Tp, m, n > &a, const Matx< _Tp, m, n > &b)

template<typename _Tp , int m, int n>
static Matx< _Tp, m, n > &	*operator=** (Matx< _Tp, m, n > &a, int alpha)

template<typename _Tp , int m, int n>
static Matx< _Tp, m, n > &	*operator=** (Matx< _Tp, m, n > &a, float alpha)

template<typename _Tp , int m, int n>
static Matx< _Tp, m, n > &	*operator=** (Matx< _Tp, m, n > &a, double alpha)

template<typename _Tp , int m, int n>
static Matx< _Tp, m, n >	operator* (const Matx< _Tp, m, n > &a, int alpha)

template<typename _Tp , int m, int n>
static Matx< _Tp, m, n >	operator* (const Matx< _Tp, m, n > &a, float alpha)

template<typename _Tp , int m, int n>
static Matx< _Tp, m, n >	operator* (const Matx< _Tp, m, n > &a, double alpha)

template<typename _Tp , int m, int n>
static Matx< _Tp, m, n >	operator* (int alpha, const Matx< _Tp, m, n > &a)

template<typename _Tp , int m, int n>
static Matx< _Tp, m, n >	operator* (float alpha, const Matx< _Tp, m, n > &a)

template<typename _Tp , int m, int n>
static Matx< _Tp, m, n >	operator* (double alpha, const Matx< _Tp, m, n > &a)

template<typename _Tp , int m, int n>
static Matx< _Tp, m, n > &	operator/= (Matx< _Tp, m, n > &a, float alpha)

template<typename _Tp , int m, int n>
static Matx< _Tp, m, n > &	operator/= (Matx< _Tp, m, n > &a, double alpha)

template<typename _Tp , int m, int n>
static Matx< _Tp, m, n >	operator/ (const Matx< _Tp, m, n > &a, float alpha)

template<typename _Tp , int m, int n>
static Matx< _Tp, m, n >	operator/ (const Matx< _Tp, m, n > &a, double alpha)

template<typename _Tp , int m, int n>
static Matx< _Tp, m, n >	operator- (const Matx< _Tp, m, n > &a)

template<typename _Tp , int m, int n, int l>
static Matx< _Tp, m, n >	operator* (const Matx< _Tp, m, l > &a, const Matx< _Tp, l, n > &b)

template<typename _Tp , int m, int n>
static Vec< _Tp, m >	operator* (const Matx< _Tp, m, n > &a, const Vec< _Tp, n > &b)

template<typename _Tp , int m, int n>
static bool	operator== (const Matx< _Tp, m, n > &a, const Matx< _Tp, m, n > &b)

template<typename _Tp , int m, int n>
static bool	operator!= (const Matx< _Tp, m, n > &a, const Matx< _Tp, m, n > &b)

詳解

template<typename _Tp, int m, int n>
class cv::Matx< _Tp, m, n >

Template class for small matrices whose type and size are known at compilation time

If you need a more flexible type, use Mat . The elements of the matrix M are accessible using the M(i,j) notation. Most of the common matrix operations (see also MatrixExpressions ) are available. To do an operation on Matx that is not implemented, you can easily convert the matrix to Mat and backwards:

Matx33f m(1, 2, 3,
          4, 5, 6,
          7, 8, 9);
cout << sum(Mat(m*m.t())) << endl;

Except of the plain constructor which takes a list of elements, Matx can be initialized from a C-array:

float values[] = { 1, 2, 3};

Matx31f m(values);

In case if C++11 features are available, std::initializer_list can be also used to initialize Matx:

Matx31f m = { 1, 2, 3};

関数詳解

◆ randn()

template<typename _Tp , int m, int n>

static Matx cv::Matx< _Tp, m, n >::randn	(	_Tp	a,
		_Tp	b
	)

static

Generates normally distributed random numbers

引数

a	Mean value.
b	Standard deviation.

◆ randu()

template<typename _Tp , int m, int n>

static Matx cv::Matx< _Tp, m, n >::randu	(	_Tp	a,
		_Tp	b
	)

static

Generates uniformly distributed random numbers

引数

a	Range boundary.
b	The other range boundary (boundaries don't have to be ordered, the lower boundary is inclusive, the upper one is exclusive).

このクラス詳解は次のファイルから抽出されました:

matx.hpp

公開型

公開メンバ関数

静的公開メンバ関数

公開変数類

関連関数

詳解

関数詳解

◆ randn()

◆ randu()