Example precision? about clandmark HOT 8 CLOSED

int main( int argc, const char** argv )
{

    //CvCapture* capture = 0x0;
    //CvVideoWriter* writer = 0x0;
    VideoCapture capture;
    VideoWriter writer;

    Mat frame;

    double tic;
    bool saveoutput = false;
    string out_fname;

    Flandmark *flandmark = Flandmark::getInstanceOf(landmarks_path.c_str());
    CFeaturePool *featurePool = new CFeaturePool(flandmark->getBaseWindowSize()[0], flandmark->getBaseWindowSize()[1]);
    featurePool->addFeaturesToPool(
                                   new CSparseLBPFeatures(
                                                          featurePool->getWidth(),
                                                          featurePool->getHeight(),
                                                          featurePool->getPyramidLevels(),
                                                          featurePool->getCumulativeWidths()
                                                          )
                                   );

    flandmark->setNFfeaturesPool(featurePool);

    //-- 1. Load the cascades
    if( !face_cascade.load( cascade_path ) )
    {
        cerr << "Couldn't load the haar cascade. Exiting..." << endl;
        return -1;
    };


    capture.open(0);
    // window
    namedWindow(window_name, CV_WINDOW_KEEPRATIO);
    //    namedWindow(window_name, WINDOW_KEEPRATIO);

    //-- 2. Read the video stream
    if( capture.isOpened() )
    {
        while( true )
        {
            tic = (double)getTickCount();

            capture >> frame;

            resize(frame, frame, Size(frame.size().width/3, frame.size().height/3));

            //-- 3. Apply the classifier to the frame
            if( !frame.empty() )
            {
                detectAndDisplay( frame, flandmark );

                tic = ((double)getTickCount() - tic)/getTickFrequency() * 1000;

                stringstream fps;
                fps << "fps: " << setprecision(4) << setw(4) << 1000.0 / tic << " ";
                putText(frame, fps.str(), Point(10, 25), CV_FONT_HERSHEY_COMPLEX, 1, Scalar(255, 255, 0));
                //              putText(frame, fps.str(), Point(10, 25), FONT_HERSHEY_COMPLEX, 1, Scalar(255, 255, 0));

                imshow( window_name, frame );

            } else {
                cerr << "No frame --- break." << endl;
                break;
            }

            if (saveoutput)
            {
                writer << frame;
            }

            int c = waitKey(10);
            if( (char)c == 'c' )
            {
                break;
            }
        }
    }

    delete flandmark;

    return 0;
}

void detectAndDisplay( Mat &frame, Flandmark *flandmark)
{
    std::vector<Rect> faces;
    Mat frame_gray;
    //  int bbox[4];
    int bbox[8];
    fl_double_t *landmarks;

    cvtColor( frame, frame_gray, CV_BGR2GRAY );
    //    cvtColor( frame, frame_gray, COLOR_BGR2GRAY );
    equalizeHist( frame_gray, frame_gray );

    //-- Detect faces
    face_cascade.detectMultiScale( frame_gray, faces, 1.1, 2, 0|CV_HAAR_SCALE_IMAGE, Size(30, 30) );
    //  face_cascade.detectMultiScale( frame_gray, faces, 1.1, 2, 0|CASCADE_SCALE_IMAGE, Size(30, 30) );

    //    CImage *frm_gray = new CImage();
    cimg_library::CImg<unsigned char>* frm_gray = 0x0; //= new cimg_library::CImg<unsigned char>();

    for( uint32_t i = 0; i < faces.size(); i++ )
    {
        // Get detected face bounding box
        bbox[0] = faces[i].x;
        bbox[1] = faces[i].y;
        bbox[2] = faces[i].x + faces[i].width;
        bbox[3] = faces[i].y;
        bbox[4] = faces[i].x + faces[i].width;
        bbox[5] = faces[i].y + faces[i].height;
        bbox[6] = faces[i].x;
        bbox[7] = faces[i].y + faces[i].height;

        // Detect facial landmarks
        frm_gray = cvImgToCImg(frame_gray);
        flandmark->detect(frm_gray, bbox);

        delete frm_gray;

        // Get detected landmarks
        landmarks = flandmark->getLandmarks();

        // Draw bounding box and detected landmarks
        //      rectangle(frame, Point(bbox[0], bbox[1]), Point(bbox[2], bbox[3]), Scalar(255, 0, 0));
        circle(frame, Point(int(landmarks[0]), int(landmarks[1])), 2, Scalar(255, 0, 0), -1);
        rectangle(frame, faces.at(i), Scalar(0,255,0), 3);
        for (int i=2; i < 2*flandmark->getLandmarksCount(); i+=2)
        {
            circle(frame, Point(int(landmarks[i]), int(landmarks[i+1])), 2, Scalar(0, 0, 255), -1);
        }

        // Textual output
        printTimingStats(flandmark->timings);
        printLandmarks(landmarks, flandmark->getLandmarksCount());
        printLandmarks(flandmark->getLandmarksNF(), flandmark->getLandmarksCount());
    }

    //    delete frm_gray;
}