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指定存储元素的数据类型以及每个矩阵点的通道数：

CV_[位数][是否带符号][类型前缀]C[通道数]

#include
   
    #include
    
     using namespace std;using namespace cv;int main() {
   	// 指定存储元素的数据类型以及每个矩阵点的通道数：	//		CV_[位数][是否带符号][类型前缀]C[通道数]	// 方法1：使用Mat()构造函数	Mat M(2, 2, CV_8UC3, Scalar(0, 0, 255));	cout << "M = " << endl << " " << M << endl << endl;	cout << "---------------------------------------" << endl;	// 方法2：利用create()函数	M.create(4, 4, CV_8UC(3));	cout << "M = " << endl << " " << M << endl << endl;	cout << "---------------------------------------" << endl;		// 方法3：采用Matlab式的初始化方式	Mat E = Mat::eye(4, 4, CV_64F);	cout << "E = " << endl << " " << E << endl << endl;	cout << "---------------------------------------" << endl;	Mat O = Mat::ones(2, 2, CV_32F);	cout << "O = " << endl << " " << O << endl << endl;	cout << "---------------------------------------" << endl;	Mat Z = Mat::zeros(3, 3, CV_8UC1);	cout << "Z = " << endl << " " << Z << endl << endl;	cout << "---------------------------------------" << endl;	// 方法4：对小矩阵使用逗号分隔式初始化函数	//						分隔式顺序按列从左到右	Mat C = (Mat_
     
      (3, 3) << 0, -1, 0, -1, 5, -1, 0, -1, 0);	cout << "C = " << endl << " " << C << endl << endl;	cout << "---------------------------------------" << endl;	// 方法5：为已存在的对象创建新信息头	Mat RowClone = C.row(1).clone();	cout << "RowClone = " << endl << " " << RowClone << endl << endl;	cout << "---------------------------------------" << endl;	// 使用randu()方法填充矩阵	Mat r = Mat(10, 3, CV_8UC3);	randu(r, Scalar::all(0), Scalar::all(255));	cout << r<
      
       << endl;	cout << "------------------------------" << endl;		system("pause");}
      
     
    
   

参考书籍《OpenCV3编程入门》

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