OpenCV(C++) 사용하기

#include <opencv2/opencv.hpp>

using namespace cv;
using namespace std;

int main(void)
{
	// 행렬의 약자.
	// 사용은 할수 있는 형태이다.
	//Mat image;
	// 200 : 가로 해상도
	// 300 : 세로 해상도
	// CV_8U : 8bit unsigned char(gray)
	// 255 (세로, 가로)
	Mat image(200, 300, CV_8U, Scalar(255));
	cout << "행 개수 : " << image.rows << endl;
	cout << "열 개수 : " << image.cols << endl;


	// 윈도우 창 생성
	string title = "윈도우";
	namedWindow(title, WINDOW_AUTOSIZE);
	moveWindow(title, 100, 200);
	imshow(title, image);

	//블로킹 용도로 사용
	waitKey();

}

	Mat image(600, 800, CV_8U, Scalar(0)); // 0은 검은색 255는 흰색

 

Point 활용

#include <opencv2/opencv.hpp>

using namespace cv;
using namespace std;

int main(void)
{
	//제너릭 방식
	Point_<int> pt1(100, 200);
	cout << pt1 << endl; // [100,200]
	cout << pt1.x << endl;  //  100
	cout << pt1.y << endl;  //  200

	Point_<float> pt2(10.12f, 20.20f);
	cout << pt2 << endl; // [10.12,20.2]
	cout << pt2.x << endl;  //  10.12
	cout << pt2.y << endl;  //  20.2

	//2i 가 정수타입
	// typedef Point_<int> Point2i;
	Point2i pt3(100, 200); 
	cout << pt3 << endl; //  [100,200]
	cout << pt3.x << endl;  //  100
	cout << pt3.y << endl;  //  200

	Point2i a(3, 4), b(4, 5);
	Point2i c = a + b; // 벡터 합
	cout << c << endl;

	Point2i d = c * 2;
	cout << d << endl;

	//int e = a.dot(b); // 내적 
	cout << a.dot(b) << endl;

	Point f(1, 2), g(1, 2);
	cout << (f == g) << endl;  //비교 가능

	Point h(1, 2);
	Point2f i(1.0f, 2.0f);
	Point j = h + (Point)i;
	cout << j << endl;  // [2, 4]

	Point3i k(1, 2, 3);
	cout << k << endl;  // [1, 2, 3]


}

#include <opencv2/opencv.hpp>

using namespace cv;
using namespace std;

int main(void)
{
	Size t;
	Size_<int> a(10, 20);
	cout << a << endl;

	Size2i b(10, 20);
	cout << b.width << endl;
	cout << b.height << endl;
	cout << b.area() << endl;

}

#include <opencv2/opencv.hpp>

using namespace cv;
using namespace std;

int main(void)
{
	/*
	_Tp x; //!< x coordinate of the top-left corner
	_Tp y; //!< y coordinate of the top-left corner
	_Tp width; //!< width of the rectangle
	_Tp height; // !< height of the rectangle
	*/

	Rect t(10, 20, 30, 40);
	cout << t << endl;
	cout << t.x << endl;
	cout << t.y << endl;
	cout << t.width << endl;
	cout << t.height << endl;

	Rect s(Point(1, 2), Point(3, 4));
	cout << s << endl;
}

 

 

 

#include <opencv2/opencv.hpp>

using namespace cv;
using namespace std;

int main(void)
{
	
	Vec<int, 5> v1(1, 2, 3, 4, 5);
	cout << v1 << endl;

	Vec3i v2(1, 2, 3);
	Vec3i v3(3, 6, 7);
	Vec3i v4 = v2 + v3;
	cout << v4 << endl;
	cout << v4[0] << endl;
	cout << v2 * 3 << endl;


}

#include <opencv2/opencv.hpp>

using namespace cv;
using namespace std;

void onMouse(int e, int x, int y, int f, void *p)
{
	switch ( e)
	{
	case EVENT_LBUTTONDOWN:
		cout << 1<< ":" <<*(int *)p << endl;
		break;

	case EVENT_RBUTTONDOWN:
		cout << 2 << endl;
		break;

	case EVENT_LBUTTONUP:
		cout << 3 << endl;
		break;

	case EVENT_RBUTTONUP:
		cout << 4 << endl;
		break;

	case EVENT_MOUSEMOVE:
		cout << x<< " " << y << endl;
		break;


	default:
		break;
	}
}

int main(void)
{
	//  B G R
	Scalar red(0, 0, 255);
	cout << red << endl;  // [0, 0,  255, 0]

	Mat image(200, 300, CV_8U);
	image.setTo(255);
	// UI
	imshow("마우스", image);

	// event1
	int num = 10;
	setMouseCallback("마우스", onMouse, &num);


	waitKey();


}