OpenCV--学习笔记01

/* * * cvout_sample just demonstrates the serial out capabilities of cv::Mat *  That is, cv::Mat M(...); cout << M;  Now works. * */#include "opencv2/core/core.hpp"#include <iostream>using namespace std;using namespace cv;static void help(){    cout    << "\n------------------------------------------------------------------\n"    << " This program shows the serial out capabilities of cv::Mat\n"    << "That is, cv::Mat M(...); cout << M;  Now works.\n"    << "Output can be formated to OpenCV, matlab, python, numpy, csv and \n"    << "C styles Usage:\n"    << "./cvout_sample\n"    << "------------------------------------------------------------------\n\n"    << endl;}int main(int argc, char** argv){    cv::CommandLineParser parser(argc, argv, "{help h||}");    if (parser.has("help"))    {        help();        return 0;    }    Mat I = Mat::eye(4, 4, CV_64F);    I.at<double>(1,1) = CV_PI;    cout << "I = \n" << I << ";" << endl << endl;    Mat r = Mat(10, 3, CV_8UC3);    randu(r, Scalar::all(0), Scalar::all(255));    cout << "r (default) = \n" << r << ";" << endl << endl;    cout << "r (matlab) = \n" << format(r, Formatter::FMT_MATLAB) << ";" << endl << endl;    cout << "r (python) = \n" << format(r, Formatter::FMT_PYTHON) << ";" << endl << endl;    cout << "r (numpy) = \n" << format(r, Formatter::FMT_NUMPY) << ";" << endl << endl;    cout << "r (csv) = \n" << format(r, Formatter::FMT_CSV) << ";" << endl << endl;    cout << "r (c) = \n" << format(r, Formatter::FMT_C) << ";" << endl << endl;    Point2f p(5, 1);    cout << "p = " << p << ";" << endl;    Point3f p3f(2, 6, 7);    cout << "p3f = " << p3f << ";" << endl;    vector<float> v;    v.push_back(1);    v.push_back(2);    v.push_back(3);    cout << "shortvec = " << Mat(v) << endl;    vector<Point2f> points(20);    for (size_t i = 0; i < points.size(); ++i)        points[i] = Point2f((float)(i * 5), (float)(i % 7));    cout << "points = " << points << ";" << endl;    return 0;}