3 #include "opencv2/core/opengl.hpp"
4 #include "opencv2/highgui/highgui.hpp"
5 #include "opencv2/cudaimgproc.hpp"
9 using namespace cv::cuda;
13 cout << "This program demonstrates using alphaComp" << endl;
14 cout << "Press SPACE to change compositing operation" << endl;
15 cout << "Press ESC to exit" << endl;
17 namedWindow("First Image", WINDOW_NORMAL);
18 namedWindow("Second Image", WINDOW_NORMAL);
19 namedWindow("Result", WINDOW_OPENGL);
23 Mat src1(640, 480, CV_8UC4, Scalar::all(0));
24 Mat src2(640, 480, CV_8UC4, Scalar::all(0));
26 rectangle(src1, Rect(50, 50, 200, 200), Scalar(0, 0, 255, 128), 30);
27 rectangle(src2, Rect(100, 100, 200, 200), Scalar(255, 0, 0, 128), 30);
34 imshow("First Image", src1);
35 imshow("Second Image", src2);
37 int alpha_op = ALPHA_OVER;
39 const char* op_names[] =
41 "ALPHA_OVER", "ALPHA_IN", "ALPHA_OUT", "ALPHA_ATOP", "ALPHA_XOR", "ALPHA_PLUS", "ALPHA_OVER_PREMUL", "ALPHA_IN_PREMUL", "ALPHA_OUT_PREMUL",
42 "ALPHA_ATOP_PREMUL", "ALPHA_XOR_PREMUL", "ALPHA_PLUS_PREMUL", "ALPHA_PREMUL"
47 cout << op_names[alpha_op] << endl;
49 alphaComp(d_src1, d_src2, d_res, alpha_op);
51 imshow("Result", d_res);
53 char key = static_cast<char>(waitKey());
62 if (alpha_op > ALPHA_PREMUL)
63 alpha_op = ALPHA_OVER;