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  1. #include "opencv2/highgui.hpp"
  2. #include "opencv2/imgproc.hpp"
  3. #include "opencv2/objdetect.hpp"
  4. #include "opencv2/videoio.hpp"
  5. #include <iostream>
  6. #include <vector>
  7.  
  8.  
  9.  
  10. using namespace std;
  11. using namespace cv;
  12.  
  13. int main() {
  14.   double scale = 1.0;
  15.  
  16.   VideoCapture cap(0);
  17.   if (!cap.isOpened())
  18.     return -1;
  19.  
  20.   CascadeClassifier faceCascade;
  21.   faceCascade.load("C:/Users/TSUKAT/source/repos/opencv-3.4/data/haarcascades/haarcascade_frontalface_alt.xml");
  22.  
  23.  
  24.  
  25.   for (;;) {
  26.     /*Mat frame =
  27.         imread("C:/Users/TSUKAT/source/repos/ConsoleApplication3/putin.jpg", IMREAD_COLOR);*/
  28.     Mat frame;
  29.     cap >> frame;
  30.  
  31.     Mat grayscale;
  32.     cvtColor(frame, grayscale, COLOR_BGR2GRAY);
  33.     resize(
  34.         grayscale, grayscale,
  35.         Size(grayscale.size().width / scale, grayscale.size().height / scale));
  36.  
  37.     vector<Rect> faces;
  38.     faceCascade.detectMultiScale(grayscale, faces, 1.1, 3, 0, Size(30, 30));
  39.  
  40.      for (Rect area : faces) {
  41.       Scalar drawColor = Scalar(255, 0, 0);
  42.       rectangle(frame, Point(cvRound(area.x * scale), cvRound(area.y * scale)),
  43.                 Point(cvRound((area.x + area.width - 1) * scale),
  44.                       cvRound((area.y + area.height - 1) * scale)),
  45.                 drawColor);
  46.     }
  47.     imshow("webcam frame", frame);
  48.     if (waitKey(30) >= 0) {
  49.       break;
  50.     }
  51.   }
  52.   return 0;
  53. }
  54.  
Compilation error #stdin compilation error #stdout 0s 0KB
comments (?)
stdin 
Standard input is empty
compilation info 
prog.cpp:1:10: fatal error: opencv2/highgui.hpp: No such file or directory
 #include "opencv2/highgui.hpp"
          ^~~~~~~~~~~~~~~~~~~~~
compilation terminated.
stdout 
Standard output is empty
https://ideone.com/HlkNle
language:
C++ (gcc 8.3)
created:
4 years ago
visibility:
public

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