•

Mat

(строки, столбцы, тип, скаляр (

rows

,

cols

,

type

,

Scalar

))

строки: размер строки (rows: row size)

столбцы: размер столбца (cols : column size)

тип: тип данных (type : data type)

Скаляр: матричное значение (Scalar : matrix value)

#include <opencv2/opencv.hpp>

using namespace cv;

using namespace std;

int main

{

float data[] = {

1.2f, 2.3f, 3.2f,

4.5f, 5.f, 6.5f,

};

Mat m1(2, 3, CV_8U);

Mat m2(2, 3, CV_8U, Scalar(300));

Mat m3(2, 3, CV_32F, data);

Size sz(2, 3);

Mat m4(Size(2, 3), CV_64F);

Mat m5(sz, CV_32F, data);

cout << "[m1] =" << endl << m1 << endl;

cout << "[m2] =" << endl << m2 << endl;

cout << "[m3] =" << endl << m3 << endl << endl;

cout << "[m4] =" << endl << m4 << endl;

cout << "[m5] =" << endl << m5 << endl;

return 0;

}

#include <opencv2/opencv.hpp>

using namespace cv;

using namespace std;

int main

{

Mat m1(4, 3, CV_32FC3);

cout << “Dimension = " << m1.dims << endl;

cout << “Rows = " << m1.rows << endl;

cout << “Columns = " << m1.cols << endl << endl;

cout << “Channels = " << m1.channels << endl;

cout << “Data Type = " << m1.depth << endl;

cout << “Matrix Size = " << m1.size << endl << endl;

cout << “Total Data Number = " << m1.total << endl;

return 0;

}

#include <opencv2/opencv.hpp>

using namespace cv;

using namespace std;

int main

{

Mat m1(2, 3, CV_8U, 2);

Mat m2(2, 3, CV_8U, Scalar(10));

Mat m3 = m1 + m2;

Mat m4 = m2 – 6;

Mat m5 = m1;

cout << "[m2] =" << endl << m2 << endl;

cout << "[m3] =" << endl << m3 << endl;

cout << "[m4] =" << endl << m4 << endl << endl;

cout << "[m1] =" << endl << m1 << endl;

cout << "[m5] =" << endl << m5 << endl << endl;

m5 = 100;

cout << "[m1] =" << endl << m1 << endl;

cout << "[m5] =" << endl << m5 << endl;

return 0;

}

• Копирование исходной матрицы в другую матрицу / Copy original matrix to another matrix

• Матовый клон / Mat clone

• void copy To (матрица целей, матрица маски) / void copy To

(objective matrix, mask matrix)

–

mask matrix : Копирование только ненулевых элементов (elemen)

•

void convertTo

(objective matrix, data type)

–

data type : data type, которые вы хотите изменить

#include <opencv2/opencv.hpp>

using namespace cv;

using namespace std;

int main

{

double data[] = {

1.1, 2.2, 3.3, 4.4,

5.5, 6.6, 7.7, 8.9,

9.9, 10, 11, 12

};

Mat m1(3, 4, CV_64F, data);

Mat m2 = m1.clone; // copy m1 to m2

Mat m3, m4;

m1.copyTo(m3); // copy m1 to m3

m1.convertTo(m4, CV_8U); // copy m1 to m4 converting to uchar

cout << "[m1] =\n" << m1 << endl;

cout << "[m2] =\n" << m2 << endl;

cout << "[m3] =\n" << m3 << endl;

cout << "[m4] =\n" << m4 << endl;