opencv中创建任意矩阵

#include
#include
#include
#include
#include
#include
#include 
using namespace cv;
using namespace std;
//--------------------------------------【main( )函数】-----------------------------------------
//          描述：控制台应用程序的入口函数，我们的程序从这里开始执行
//-------------------------------------------------------------------------------------------------
int main()
{
	double time0 = static_cast(getTickCount());//记录起始时间

	//注意：按行输出矩阵（1，2，3为第一行）
	Mat M = (Mat_(3, 3) << 1, 2, 3, 4, 5, 6, 7, 8, 9);
	cout << "M=" << endl << M << endl;
	cout << "——————————————————————" << endl;

	//randu函数填入随机值矩阵，需要给出最大最小值
	Mat R = Mat(2, 3, CV_8UC1);
	randu(R, 0, 255);
    cout << "R=" << endl << R << endl;
	cout << "——————————————————————" << endl;

	//对于多通道
	Mat R1 = Mat(2, 3, CV_8UC3);
	randu(R1, Scalar(0,0,0),Scalar(255,200,185));
	cout << "R1=" << endl << R1 << endl;

	time0 = ((double)getTickCount() - time0) / getTickFrequency();
	cout << "此方法运行时间：" << time0 << "秒" << endl;//输出运行时间

	waitKey(0);
	return 0;
}