灰色直方图图像匹配

 

 

#include "opencv2/highgui/highgui.hpp"  
#include "opencv/cv.hpp"  
#include "string.h"


//画直方图用  
int HistogramBins = 256;
float HistogramRange1[2] = { 0, 255 };
float *HistogramRange[1] = { &HistogramRange1[0] };

/*
* imagefile1:
* imagefile2:
* method: could be CV_COMP_CHISQR, CV_COMP_BHATTACHARYYA, CV_COMP_CORREL, CV_COMP_INTERSECT
*/
int CompareHist(const char* imagefile1, const char* imagefile2)
{
    IplImage *image1 = cvLoadImage(imagefile1, 0);
    IplImage *image2 = cvLoadImage(imagefile2, 0);

    CvHistogram *Histogram1 = cvCreateHist(1, &HistogramBins, CV_HIST_ARRAY, HistogramRange);
    CvHistogram *Histogram2 = cvCreateHist(1, &HistogramBins, CV_HIST_ARRAY, HistogramRange);

    cvCalcHist(&image1, Histogram1);
    cvCalcHist(&image2, Histogram2);

    cvNormalizeHist(Histogram1, 1);
    cvNormalizeHist(Histogram2, 1);

    // CV_COMP_CHISQR,CV_COMP_BHATTACHARYYA这两种都可以用来做直方图的比较，值越小，说明图形越相似  
    printf("CV_COMP_CHISQR : %.4f\n", cvCompareHist(Histogram1, Histogram2, CV_COMP_CHISQR));
    printf("CV_COMP_BHATTACHARYYA : %.4f\n", cvCompareHist(Histogram1, Histogram2, CV_COMP_BHATTACHARYYA));


    // CV_COMP_CORREL, CV_COMP_INTERSECT这两种直方图的比较，值越大，说明图形越相似  
    printf("CV_COMP_CORREL : %.4f\n", cvCompareHist(Histogram1, Histogram2, CV_COMP_CORREL));
    printf("CV_COMP_INTERSECT : %.4f\n", cvCompareHist(Histogram1, Histogram2, CV_COMP_INTERSECT));

    cvReleaseImage(&image1);
    cvReleaseImage(&image2);
    cvReleaseHist(&Histogram1);
    cvReleaseHist(&Histogram2);
    return 0;
}

int main(int argc, char* argv[])
{
    char path1[111];
    char path2[111];
    strcpy(path1, "C:\\C_C++ code\\Photo and video\\mulpsq\\psq0032.jpg");
    strcpy(path2, "C:\\C_C++ code\\Photo and video\\mulpsq\\psq0035.jpg");
    CompareHist(path1,path2);
    //CompareHist("d:\\camera.jpg", "d:\\camera1.jpg");  
    return 0;
}