I am using the source code from this tutorial: http://docs.opencv.org/trunk/modules/contrib/doc/facerec/tutorial/facerec_video_recognition.html and when I try to run the code after fixing a few paths, an error comes up saying there is an "Expected Declaration before'}' token. I looked through the code to find extra brackets but I could not find any. How should I fix this? (Edited Code below)
static void read_csv(const string& filename, vector<mat>& images, vector<int>& labels, char separator = ';') { std::ifstream file(filename.c_str(), ifstream::in); if (!file) { string error_message = "No valid input file was given, please check the given filename."; CV_Error(CV_StsBadArg, error_message); } string line, path, classlabel; while (getline(file, line)) { stringstream liness(line); getline(liness, path, separator); getline(liness, classlabel); if(!path.empty() && !classlabel.empty()) { images.push_back(imread(path, 0)); labels.push_back(atoi(classlabel.c_str())); } } }
int main(int argc, const char *argv[]) { if (argc != 4) { cout << "usage: " << argv[0] << " <c: opencv="" sources="" data="" haarcascades="" haarcascade_frontalface_alt_tree=""> <c: opencv="" csv.ext=""> <usb vid_04f2&pid_b446&mi_00="" 6&2eb9c0d0&0&0000="">" << endl; cout << "\t <c: opencv="" sources="" data="" haarcascades="" haarcascade_frontalface_alt_tree="">" << endl; cout << "\t <c: opencv="" csv.ext="">" << endl; cout << "\t <usb vid_04f2&pid_b446&mi_00="" 6&2eb9c0d0&0&0000="">" << endl; exit(1); } string fn_haar = string(argv[1]); string fn_csv = string(argv[2]); int deviceId = atoi(argv[3]); vector<mat> images; vector<int> labels;
try {
read_csv(fn_csv, images, labels);
} catch (cv::Exception& e) {
cerr << "Error opening file \"" << fn_csv << "\". Reason: " << e.msg << endl;
exit(1);
}
int im_width = images[0].cols;
int im_height = images[0].rows;
Ptr<FaceRecognizer> model = createEigenFaceRecognizer();
model->train(images, labels);
CascadeClassifier haar_cascade;
haar_cascade.load(fn_haar);
VideoCapture cap(deviceId);
if(!cap.isOpened()) {
cerr << "Capture Device ID " << deviceId << "cannot be opened." << endl;
return -1;
}
Mat frame;
for(;;) {
cap >> frame;
Mat original = frame.clone();
Mat gray;
cvtColor(original, gray, CV_BGR2GRAY);
vector< Rect_<int> > faces;
haar_cascade.detectMultiScale(gray, faces);
for(int i = 0; i < faces.size(); i++) {
Rect face_i = faces[i];
Mat face = gray(face_i);
Mat face_resized;
cv::resize(face, face_resized, Size(im_width, im_height), 1.0, 1.0, INTER_CUBIC);
int prediction = model->predict(face_resized);
rectangle(original, face_i, CV_RGB(0, 255,0), 1);
string box_text = format("Prediction = %d", prediction);
int pos_x = std::max(face_i.tl().x - 10, 0);
int pos_y = std::max(face_i.tl().y - 10, 0);
putText(original, box_text, Point(pos_x, pos_y), FONT_HERSHEY_PLAIN, 1.0, CV_RGB(0,255,0), 2.0);
}
imshow("face_recognizer", original);
char key = (char) waitKey(20);
if(key == 27)
break;
}
return 0;
}
