本文主要是介绍opencv3.0-Mat类笔记，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！
转载自：http://blog.csdn.net/what_lei/article/details/54613575
Mat：
- the matrix header 包含矩阵尺寸；
- a pointer 包含矩阵中的数值。
- Mat M(2,2,CV_8UC3,Scalar(0,0,125));
注：2,2表示矩阵尺寸；
CV_8UC3表示
CV_[The number of bits per itrm][signed or Unsigned][Type prefix]C[the channel number]；
Scalar(0,0,125)表示初始值。
- 使用create()函数
创建特殊的Mat矩阵：
- 零矩阵--zeros()
- 单位矩阵--eye()
- 全1矩阵--ones()
常见的其他输出项：
- 2D Point
- 3D Point
- std::vector via cv::Mat
- std::vector of points
#include<iostream>
#include <opencv2\opencv.hpp>using namespace std;
using namespace cv;
using namespace cv::ml;int main()
{cout << "构造函数创建Mat:Mat M(2, 2, CV_8UC3, Scalar(0, 0, 125))" << endl;Mat M(2, 2, CV_8UC3, Scalar(0, 0, 125)); cout << M.rows << endl;cout << M.cols << endl;cout << M << endl;cout << "create函数创建Mat:Mat M1;M1.create(4, 4, CV_8UC(2)); " << endl;Mat M1;M1.create(4, 4, CV_8UC(2));cout << M1.rows << endl;cout << M1.cols << endl;cout << M1 << endl;cout << "Mat类静态函数zeros:Mat zero = Mat::zeros(3, 3, CV_8UC1);" << endl;cout << "创建零矩阵" << endl;Mat zero = Mat::zeros(3, 3, CV_8UC1);cout << zero << endl;cout << "单位矩阵:" << endl;Mat I = Mat::eye(4, 4, CV_64F);cout << I << endl;cout << "全1矩阵:" << endl;Mat one = Mat::ones(2, 2, CV_32F);cout << one << endl;Point2f p(5, 1);cout << "Point(2D) = " << p << endl;Point3f p3f(2, 6, 7);cout << "Point (3D) = " << p3f << endl;vector<float> v;v.push_back((float)CV_PI); v.push_back(2); v.push_back(3.01f);Mat t = Mat(v); //t表示3行1列的矩阵cout << "Vector of floats via Mat = " << t << endl << endl;cout << t.rows << endl; //3cout << t.cols << endl; //1return 0;
}
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