#include <opencv2/opencv.hpp>

 #include <iostream>

 using namespace cv;

 using namespace std;

 int main(int argc, char** argv) {

     String cascadeFilePath = "F:/CMake_bulid/install/etc/haarcascades/haarcascade_frontalface_alt.xml";//数据路径

     CascadeClassifier face_cascade;//创建分类器对象

     if (!face_cascade.load(cascadeFilePath)) {

         printf("could not load haar data...\n");

         return -;

     }

     VideoCapture Capture();

     Mat src, gray_src;

     while(Capture.read(src)){    

         cvtColor(src, gray_src, COLOR_BGR2GRAY);

         equalizeHist(gray_src, gray_src);//直方图均衡化        

         vector<Rect> faces;

         face_cascade.detectMultiScale(gray_src, faces, 1.1, , , Size(, ));//多尺度查找

         for (size_t t = ; t < faces.size(); t++) {

             rectangle(src, faces[t], Scalar(, , ), , , );

         }

         namedWindow("output", CV_WINDOW_AUTOSIZE);

         imshow("output", src);

         uchar key = waitKey();

         if(key==)

         {

             break;

         }

     }

     waitKey();

     return ;

 }