OpenCV 공부 - Mat 객체의 다양한 초기화 방법

void MatOp1()
{
	Mat img1; 	// empty matrix

	Mat img2(480, 640, CV_8UC1);		// unsigned char, 1-channel
	Mat img3(480, 640, CV_8UC3);		// unsigned char, 3-channels
	Mat img4(Size(640, 480), CV_8UC3);	// Size(width, height)

	Mat img5(480, 640, CV_8UC1, Scalar(128));		// initial values, 128
	Mat img6(480, 640, CV_8UC3, Scalar(0, 0, 255));	// initial values, red

	Mat mat1 = Mat::zeros(3, 3, CV_32SC1);	// 0's matrix
	Mat mat2 = Mat::ones(3, 3, CV_32FC1);	// 1's matrix
	Mat mat3 = Mat::eye(3, 3, CV_32FC1);	// identity matrix

	float data[] = { 1, 2, 3, 4, 5, 6 };
	Mat mat4(2, 3, CV_32FC1, data);

	Mat mat5 = (Mat_<float>(2, 3) << 1, 2, 3, 4, 5, 6);
	Mat mat6 = Mat_<uchar>({2, 3}, { 1, 2, 3, 4, 5, 6 });

	mat4.create(256, 256, CV_8UC3);	// uchar, 3-channels
	mat5.create(4, 4, CV_32FC1);	// float, 1-channel

	mat4 = Scalar(255, 0, 0);
	mat5.setTo(1.f);
}

 

출처 : github.com/sunkyoo/opencv4cvml/blob/master/ch03/MatOp/main.cpp