opencv-Mat

Mat应用：

#include <opencv2/core/core.hpp>#include <opencv2/highgui/highgui.hpp>#include <cv.h>#include <iostream>using namespace std;using namespace cv;int main(){//Mat() ConstructorMat M(2,2,CV_8UC3,Scalar(0,0,255));cout<<"M = "<<endl<<" "<<M<<endl<<endl;//C/C++ arrays and initialize via constructorint sz[3]={2,2,2};//创建一个三维矩阵Mat L(3,sz,CV_8UC1,Scalar::all(0));//cout<<"L = "<<endl<<" "<<L<<endl<<endl;//create a header for an already existing IplImage pointerIplImage* img = cvLoadImage("D:\\lena.bmp",1);Mat mtx(img);//把IplImage*转换为Mat//create()函数M.create(4,4,CV_8UC(2));cout<<"M = "<<endl<<" "<<M<<endl<<endl;//MATLAB风格初始化:zero(),ones(),:eyes().Mat E = Mat::eye(4,4,CV_64F);cout<<"E = "<<endl<<" "<<E<<endl<<endl;Mat O = Mat::ones(2,2,CV_32F);cout<<"O = "<<endl<<" "<<O<<endl<<endl;Mat Z = Mat::zeros(3,3,CV_8UC1);cout<<"Z = "<<endl<<" "<<Z<<endl<<endl;//小矩阵用逗号初始化Mat C = ( Mat_<double>(3,3)<< 0,-1,0,-1,5,-1,0,-1,0);cout<<"C = "<<endl<<" "<<C<<endl<<endl;//对已经存在的Mat对象创建新的头，并克隆或复制Mat RowClone = C.row(1).clone();cout<<"RowClone = "<<endl<<" "<<RowClone<<endl<<endl;//利用随机函数创建Mat矩阵Mat R = Mat(3,2,CV_8UC3);randu(R,Scalar::all(0),Scalar::all(255));cout<<"R = "<<endl<<" "<<R<<endl<<endl;//打印输出格式化//default格式cout<<"R(default) = "<<endl<<R<<endl<<endl;//Python格式cout<<"R(Python) = "<<endl<<format(R,"python")<<endl<<endl;//comma separated values(CSV)cout<<"R(csv) = "<<endl<<format(R,"csv")<<endl<<endl;//numpycout<<"R(numpy) = "<<endl<<format(R,"numpy")<<endl<<endl;//Ccout<<"R(c) = "<<endl<<format(R,"C")<<endl<<endl;//2D PointPoint2f p(5,1);cout<<"Point(2D) = "<<p<<endl<<endl;//3D PointPoint3f P3f(2,6,7);cout<<"Point (3D) = "<<P3f<<endl<<endl;//std::vector via cv::Matvector<float> v;v.push_back((float)CV_PI);v.push_back(2);v.push_back(3.01f);cout<<"Vector of floats via Mat = "<<Mat(v)<<endl<<endl;//std::vector of pointsvector<Point2f> vPoints(20);for(size_t E=0;E<vPoints.size();++E)vPoints[E] = Point2f((float)(E*5),(float)(E%7));cout<<"A Vector of 2D POINTS = "<<vPoints<<endl<<endl;return 0;}