为什么在运行这个OpenCV程序时得到这个异常？

Question

我使用Visual Studio 2010和OpenCV 2.3.0。

#include "stdafx.h" 
#include <cv.h> 
#include <ml.h> 
#include <highgui.h> 
#include <iostream> 
#include <stdlib.h> 

template<class T> class Image { 
    private: 
    IplImage* imgp; 

    public: 
    Image(IplImage* img = 0) { 
     imgp = img; 
    } 

    ~Image() { 
     imgp = 0; 
    } 

    void operator=(IplImage* img) { 
     imgp = img; 
    } 

    inline T* operator[](const int rowIndx) { 
     return ((T *)(imgp->imageData + rowIndx * imgp->widthStep)); 
    } 
}; 

typedef struct { 
    unsigned char b,g,r; 
} RgbPixel; 

typedef struct { 
    float b,g,r; 
} RgbPixelFloat; 

//typedef Image<RgbPixel>  RgbImage; 
//typedef Image<RgbPixelFloat> RgbImageFloat; 
typedef Image<unsigned char> BwImage; 
//typedef Image<float>   BwImageFloat; 

double crossCorrelation(IplImage* img1, IplImage* img2) { 
    double corr; 
    int M = img1->width; 
    int N = img1->height; 

    BwImage img_1(img1); 
    BwImage img_2(img2); 

    CvScalar img1_avg = cvAvg(img1, NULL); 
    CvScalar img2_avg = cvAvg(img2, NULL); 

    double sum_img1_img2 = 0; 
    double sum_img1_2 = 0; 
    double sum_img2_2 = 0; 

    for(int m = 0; m < M; ++m) { 
     for(int n = 0; n < N; ++n) { 
      sum_img1_img2 = sum_img1_img2 + (img_1[m][n] - img1_avg.val[0]) * (img_2[m][n] - img2_avg.val[0]); 
      sum_img1_2  = sum_img1_2 + (img_1[m][n] - img1_avg.val[0]) * (img_1[m][n] - img1_avg.val[0]); 
      sum_img2_2  = sum_img2_2 + (img_2[m][n] - img2_avg.val[0]) * (img_2[m][n] - img2_avg.val[0]); 
     } 
    } 

    corr = sum_img1_img2/sqrt(sum_img1_2*sum_img2_2); 
    return corr; 
} 

int _tmain(int argc, _TCHAR* argv[]) { 
    IplImage *img1 = cvLoadImage("C:/Users/ANIMES~1/Documents/VISUAL~3/Projects/tutOpencv/tutOpencv/38.png", CV_LOAD_IMAGE_COLOR); 
    IplImage *img2 = cvLoadImage("C:/Users/ANIMES~1/Documents/VISUAL~3/Projects/tutOpencv/tutOpencv/39.png", CV_LOAD_IMAGE_COLOR); 
    IplImage *img1g = cvCreateImage(cvSize(img1->width, img1->height), IPL_DEPTH_8U, 1); 
    IplImage *img2g = cvCreateImage(cvSize(img2->width, img2->height), IPL_DEPTH_8U, 1); 
    std::cout << (double)crossCorrelation(img1g, img2g) << std::endl; 
    std::system("Pause"); 
    return 0; 
} 

当我调试，我总是得到这个异常：在tutOpencv.exe

未处理的异常在0x013e157f：0000005：访问冲突读取位置0x00f3b00c。

我不明白，这个错误来自哪里？

Answer 1

添加一些断点来确定程序崩溃的位置