Trying to use face recognition, the facerecognizer

edit

So I copied from http://docs.opencv.org/trunk/modules/contrib/doc/facerec/facerec_api.html

 // Let's say we want to keep 10 Eigenfaces and have a threshold value of 10.0
 int num_components = 10;
 double threshold = 10.0;
 // Then if you want to have a cv::FaceRecognizer with a confidence threshold,
 // create the concrete implementation with the appropiate parameters:
 Ptr<FaceRecognizer> model = createEigenFaceRecognizer(num_components, threshold);

 // The following line reads the threshold from the Eigenfaces model:
 double current_threshold = model->getDouble("threshold");
 // And this line sets the threshold to 0.0:
 model->set("threshold", 0.0);

 // Create a FaceRecognizer:
 Ptr<FaceRecognizer> model = createEigenFaceRecognizer();
 // And here's how to get its name:
 String name = model->name();

 // holds images and labels
 vector<Mat> images;
 vector<int> labels;
 // images for first person
 images.push_back(imread("/var/www/html/photos/1.jpg", CV_LOAD_IMAGE_GRAYSCALE)); labels.push_back(0);
 images.push_back(imread("/var/www/html/photos/2.jpg", CV_LOAD_IMAGE_GRAYSCALE)); labels.push_back(0);
 images.push_back(imread("/var/www/html/photos/3.jpg", CV_LOAD_IMAGE_GRAYSCALE)); labels.push_back(0);
 images.push_back(imread("/var/www/html/photos/4.jpg", CV_LOAD_IMAGE_GRAYSCALE)); labels.push_back(0);
 images.push_back(imread("/var/www/html/photos/5.jpg", CV_LOAD_IMAGE_GRAYSCALE)); labels.push_back(0);
 images.push_back(imread("/var/www/html/photos/6.jpg", CV_LOAD_IMAGE_GRAYSCALE)); labels.push_back(0);
 images.push_back(imread("/var/www/html/photos/7.jpg", CV_LOAD_IMAGE_GRAYSCALE)); labels.push_back(0);
 images.push_back(imread("/var/www/html/photos/8.jpg", CV_LOAD_IMAGE_GRAYSCALE)); labels.push_back(0);
 images.push_back(imread("/var/www/html/photos/9.jpg", CV_LOAD_IMAGE_GRAYSCALE)); labels.push_back(0);
 images.push_back(imread("/var/www/html/photos/10.jpg", CV_LOAD_IMAGE_GRAYSCALE)); labels.push_back(0);
 images.push_back(imread("/var/www/html/photos/11.jpg", CV_LOAD_IMAGE_GRAYSCALE)); labels.push_back(0);
 images.push_back(imread("/var/www/html/photos/12.jpg", CV_LOAD_IMAGE_GRAYSCALE)); labels.push_back(0);
 images.push_back(imread("/var/www/html/photos/13.jpg", CV_LOAD_IMAGE_GRAYSCALE)); labels.push_back(0);
 images.push_back(imread("/var/www/html/photos/14.jpg", CV_LOAD_IMAGE_GRAYSCALE)); labels.push_back(0);
 images.push_back(imread("/var/www/html/photos/15.jpg", CV_LOAD_IMAGE_GRAYSCALE)); labels.push_back(0);
 images.push_back(imread("/var/www/html/photos/16.jpg", CV_LOAD_IMAGE_GRAYSCALE)); labels.push_back(0);
 images.push_back(imread("/var/www/html/photos/17.jpg", CV_LOAD_IMAGE_GRAYSCALE)); labels.push_back(0);
 images.push_back(imread("/var/www/html/photos/19.jpg", CV_LOAD_IMAGE_GRAYSCALE)); labels.push_back(0);
 images.push_back(imread("/var/www/html/photos/20.jpg", CV_LOAD_IMAGE_GRAYSCALE)); labels.push_back(0);
 images.push_back(imread("/var/www/html/photos/21.jpg", CV_LOAD_IMAGE_GRAYSCALE)); labels.push_back(0);
 images.push_back(imread("/var/www/html/photos/22.jpg", CV_LOAD_IMAGE_GRAYSCALE)); labels.push_back(0);
 images.push_back(imread("/var/www/html/photos/23.jpg", CV_LOAD_IMAGE_GRAYSCALE)); labels.push_back(0);
 images.push_back(imread("/var/www/html/photos/24.jpg", CV_LOAD_IMAGE_GRAYSCALE)); labels.push_back(0);
 images.push_back(imread("/var/www/html/photos/25.jpg", CV_LOAD_IMAGE_GRAYSCALE)); labels.push_back(0);
 images.push_back(imread("/var/www/html/photos/26.jpg", CV_LOAD_IMAGE_GRAYSCALE)); labels.push_back(0);
 images.push_back(imread("/var/www/html/photos/27.jpg", CV_LOAD_IMAGE_GRAYSCALE)); labels.push_back(0);
 images.push_back(imread("/var/www/html/photos/28.jpg", CV_LOAD_IMAGE_GRAYSCALE)); labels.push_back(0);
 images.push_back(imread("/var/www/html/photos/29.jpg", CV_LOAD_IMAGE_GRAYSCALE)); labels.push_back(0);
 images.push_back(imread("/var/www/html/photos/30 ...