#include <iostream>
#include <sstream>
#include <opencv2/opencv.hpp>
using namespace std;
void doJob() {
string path = "";
string cascadeName = "haarcascade_frontalface_alt.xml";
string cascadeName2 = "haarcascade_eye.xml";
cv::CascadeClassifier cascade, cascade2;
if (!cascade.load(path + cascadeName)) throw runtime_error(cascadeName + " not found");
if (!cascade2.load(path + cascadeName2)) throw runtime_error(cascadeName2 + " not found");
cv::VideoCapture cap(0);
if (!cap.isOpened()) throw runtime_error("VideoCapture open failed");
cv::Mat image;
cv::Mat gray;
while (1) {
cap >> image;
cv::cvtColor(image, gray, cv::COLOR_BGR2GRAY);
equalizeHist(gray, gray);
vector<cv::Rect> founds, founds2;
cascade.detectMultiScale(gray, founds, 1.1, 2, 0 | cv::CASCADE_SCALE_IMAGE, cv::Size(30, 30));
for (auto faceRect: founds) {
cv::rectangle(image, faceRect, cv::Scalar(0, 0, 255), 2);
cv::Mat roi = gray(faceRect);
cascade2.detectMultiScale(roi, founds2, 1.1, 2, 0 | cv::CASCADE_SCALE_IMAGE, cv::Size(30, 30));
for (auto eyeRect: founds2) {
cv::Rect rect(faceRect.x + eyeRect.x, faceRect.y + eyeRect.y, eyeRect.width, eyeRect.height);
cv::rectangle(image, rect, cv::Scalar(0, 255, 0), 2);
}
}
cv::imshow("video", image);
auto key = cv::waitKey(1);
if (key == 'q') break;
}
cv::destroyAllWindows();
}
int main(int argc, char** argv) {
try {
doJob();
}
catch (exception &ex) {
cout << ex.what() << endl;
string s;
cin >> s;
}
return 0;
}
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