samples/cpp/cout_mat.cpp

一個演示 cv::Mat 的序列輸出功能的示例

/*
 *
* cvout_sample 只是演示 cv::Mat 的序列輸出功能
* 也就是說，cv::Mat M(...); cout << M; 現在可以工作了。
 *
 */
 
#include "opencv2/core.hpp"
#include <iostream>
 
using namespace std;
using namespace cv;
 
static void help(char** argv)
{
cout
<< "\n------------------------------------------------------------------\n"
<< " 此程式展示了 cv::Mat 的序列輸出功能\n"
<< "也就是說，cv::Mat M(...); cout << M; 現在可以工作了。\n"
<< "輸出可以格式化為 OpenCV, matlab, python, numpy, csv 和 \n"
<< "C 風格。用法：\n"
<< argv[0]
<< "\n------------------------------------------------------------------\n\n"
<< endl;
}
 
 
int main(int argc, char** argv)
{
    cv::CommandLineParser parser(argc, argv, "{help h||}");
    if (parser.has("help"))
    {
help(argv);
        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;
}