-
Notifications
You must be signed in to change notification settings - Fork 589
/
haarCascadeClassifier.cpp
83 lines (61 loc) · 2.03 KB
/
haarCascadeClassifier.cpp
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
//Opencv C++ Example on Real time Face Detection Using Haar Cascade Classifier
/*We can similarly train our own Haar Classifier and Detect any object which we want
Only Thing is we need to load our Classifier in place of cascade_frontalface_alt2.xml */
#include "opencv2/objdetect.hpp"
#include "opencv2/highgui.hpp"
#include "opencv2/imgproc.hpp"
#include "opencv2/videoio.hpp"
#include <iostream>
using namespace std;
using namespace cv;
CascadeClassifier face_cascade;
void faceDetection(Mat frame)
{
Mat frame_gray;
cvtColor(frame, frame_gray, COLOR_BGR2GRAY);
// Detect faces
std::vector<Rect> faces;
face_cascade.detectMultiScale(frame_gray, faces);
for (size_t i = 0; i < faces.size(); i++)
{
Point center(faces[i].x + faces[i].width / 2, faces[i].y + faces[i].height / 2);
ellipse(frame, center, Size(faces[i].width / 2, faces[i].height / 2), 0, 0, 360, Scalar(0, 0, 255), 6);
Mat faceROI = frame_gray(faces[i]);
}
imshow("Live Face Detection", frame);
}
int main(int argc, const char** argv)
{
// Load the pre trained haar cascade classifier
//string faceClassifier = "C:/Users/kemik/OneDrive/Skrivebord/haarcascade_frontalface_default.xml";
string faceClassifier = "C:/Users/kemik/OneDrive/Skrivebord/haarcascade_frontalface_alt2.xml";
if (!face_cascade.load(faceClassifier))
{
cout << "Could not load the classifier";
return -1;
};
cout << "Classifier Loaded!" << endl;
// Read the video stream from camera
VideoCapture capture(0);
if (!capture.isOpened())
{
cout << "Could not open video capture";
return -1;
}
Mat frame;
while (capture.read(frame))
{
if (frame.empty())
{
cout << "No frame captured from camera";
break;
}
// Apply the face detection with the haar cascade classifier
faceDetection(frame);
if (waitKey(10) == 'q')
{
break; // Terminate program if q pressed
}
}
return 0;
}