opencv函数compareHist是如何工作的呢

发布网友 发布时间：2022-05-01 19:46

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热心网友 时间：2022-06-22 04:15

int main(int argc,char* argv[])
{
   Mat src1Image,src1HalfImage,src2Image,src3Image;
   Mat src1HsvImage,src1HalfHsvImage,src2HsvImage,src3HsvImage;
   
   src1Image = imread("F:\\opencv\\OpenCVImage\\compareHist01.jpg");
   src2Image = imread("F:\\opencv\\OpenCVImage\\compareHist02.jpg");
   src3Image = imread("F:\\opencv\\OpenCVImage\\compareHist03.jpg");
   src1HalfImage = Mat(src1Image, Range(src1Image.rows/2,src1Image.rows-1),Range(0,src1Image.cols-1));
   
   cvtColor(src1Image, src1HsvImage, CV_RGB2HSV);
   cvtColor(src2Image, src2HsvImage, CV_RGB2HSV);
   cvtColor(src3Image, src3HsvImage, CV_RGB2HSV);
   cvtColor(src1HalfImage, src1HalfHsvImage, CV_RGB2HSV);
   
   int hbins = 50,sbins = 60;
   int histSize[] = {hbins,sbins};
   int channels[] = {0,1};
   float hRange[] = {0,256};
   float sRange[] = {0,180};
   const float* ranges[] = {hRange,sRange};
   
   MatND src1Hist,src2Hist,src3Hist,srcHalfHist;
   
   calcHist(&src1HsvImage, 1, channels, Mat(), src1Hist, 2, histSize, ranges,true,false);
   normalize(src1Hist, src1Hist, 0,1, NORM_MINMAX,-1,Mat());
   
   calcHist(&src2HsvImage, 1, channels, Mat(), src2Hist, 2, histSize, ranges,true,false);
   normalize(src2Hist, src2Hist, 0,1, NORM_MINMAX,-1,Mat());
   
   calcHist(&src3HsvImage, 1, channels, Mat(), src3Hist, 2, histSize, ranges,true,false);
   normalize(src3Hist, src3Hist, 0,1, NORM_MINMAX,-1,Mat());
   
   calcHist(&src1HalfHsvImage, 1, channels, Mat(), srcHalfHist, 2, histSize, ranges,true,false);
   normalize(srcHalfHist, srcHalfHist, 0,1, NORM_MINMAX,-1,Mat());
   
   imshow("src1 image", src1Image);
   imshow("src2 image", src2Image);
   imshow("src3 image", src3Image);
   imshow("src1Half image", src1HalfImage);
   
   moveWindow("src1 image", 0, 0);
   moveWindow("src2 image", src1Image.cols, 0);
   moveWindow("src3 image", src2Image.cols+src1Image.cols, 0);
   moveWindow("src1 half image", src1Image.cols+src2Image.cols+src3Image.cols, 0);
   
   for (int i = 0; i < 4; i++) {
       int compareMethod = i;
       double compareResultA = compareHist(src1Hist, src1Hist, i);
       double compareResultB = compareHist(src1Hist, src2Hist, i);
       double compareResultC = compareHist(src1Hist, src3Hist, i);
       double compareResultD = compareHist(src1Hist, srcHalfHist, i);
       
       printf("直方图比对结果为\r compareResultA = %.3f  \ncompareResultB = %.3f  \ncompareResultC = %.3f  \ncompareResultD = %.3f  \n",compareResultA,compareResultB,compareResultC,compareResultD);
       printf("比对方法为 %d\n",compareMethod);
   }
   
   waitKey(0);
   return 0;
}