Gpu Mat, Cpu Mat example code 1

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#include "opencv2/opencv.hpp"
#include "opencv2/highgui.hpp"
#include "opencv2/cudaarithm.hpp"

#include <iostream>


#ifdef _DEBUG               
#pragma comment(lib, "opencv_core331d.lib")       
#pragma comment(lib, "opencv_highgui331d.lib")    
#pragma comment(lib, "opencv_imgcodecs331d.lib")  
#pragma comment(lib, "opencv_objdetect331d.lib")  
#pragma comment(lib, "opencv_imgproc331d.lib")  
#pragma comment(lib, "opencv_videoio331d.lib")    

#pragma comment(lib, "opencv_cudaarithm331d.lib")  
#else       
#pragma comment(lib, "opencv_core331.lib")       
#pragma comment(lib, "opencv_highgui331.lib")    
#pragma comment(lib, "opencv_imgcodecs331.lib")    
#pragma comment(lib, "opencv_objdetect331.lib")  
#pragma comment(lib, "opencv_imgproc331.lib")  
#pragma comment(lib, "opencv_videoio331.lib")    

#pragma comment(lib, "opencv_cudaarithm331d.lib")  
#endif        


using namespace std;
using namespace cv;

int main()
{
    cuda::GpuMat gpuImg;
    Mat img = imread("ss.jpg");

    
    gpuImg.upload(img); //upload
    vector< cuda::GpuMat> rgbGpuMat(3);
    cuda::split(gpuImg, rgbGpuMat); //cuda processing

    Mat r, g, b;
    rgbGpuMat[0].download(b); //download
    rgbGpuMat[1].download(g);
    rgbGpuMat[2].download(r);


    namedWindow("r", 0); //make window
    imshow("r", r); //show
    namedWindow("g", 0); //make window
    imshow("g", g); //show
    namedWindow("b", 0); //make window
    imshow("b", b); //show
    waitKey(0);
    

    return 0;
}

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