c++ - who can help me with this exception in vs2010 and opencv3.0 alpha? -

please help, here cpp code:

`#include <opencv2/core/core.hpp>    #include <opencv2/highgui/highgui.hpp>    #include <opencv.hpp>    #include <iostream>  #include <opencv2/imgproc/imgproc.hpp>   using namespace cv;  using namespace std;   int main()   {     int x=5,y=5,z;     mat image = imread("c:\\users\\wang\\desktop\\1.jpg",0);     vec3d intensity = image.at<uchar>(point(y, x));     z=intensity.val[0];      vector<point>points;     mat dst=mat(points);     image.convertto(dst,cv_32f);     mat grey=mat(points);     cvtcolor(dst,grey,color_bgr2gray);      imshow("miffy", dst);     waitkey(0);      return 1;   }` 

the results:................. ..... '23.exe': loaded 'c:\program files (x86)\common files\intel\opencl\bin\x86\tbb\tbb.dll', cannot find or open pdb file

'23.exe': loaded 'c:\windows\syswow64\igdrcl32.dll', cannot find or open pdb file

'23.exe': unloaded 'c:\windows\syswow64\igdrcl32.dll'

first-chance exception @ 0x77384878 in 23.exe: microsoft c++ exception: cv::exception @ memory location 0x005fdc84..

unhandled exception @ 0x77384878 in 23.exe: microsoft c++ exception: cv::exception @ memory location 0x005fdc84.. program '[4704] 23.exe: native' has exited code 0 (0x0).

at first, thought there no igdrcl32.dll in laptop, after searched it, did exist there. have no idea now, can me?