应用：
OpenCV可实现矩阵向matlab，python，c语言格式的转换。
代码：
代码语言：javascript复制/*
*
* cvout_sample just demonstrates the serial out capabilities of cv::Mat
* That is, cv::Mat M(...); cout << M; Now works.
*
*/
#include "opencv2/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::Matn"
<< "That is, cv::Mat M(...); cout << M; Now works.n"
<< "Output can be formatted to OpenCV, matlab, python, numpy, csv and n"
<< "C styles Usage:n"
<< "./cvout_samplen"
<< "------------------------------------------------------------------nn"
<< 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));//给定一个上下限,随机值填充矩阵
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;
}
