#include <opencv/cv.h>
#include <opencv2/highgui/highgui.hpp>
#include <opencv2/objdetect/objdetect.hpp>
#include <opencv2/imgproc/imgproc.hpp>

#include <stdlib.h>
#include <stdio.h>

using namespace std;
using namespace cv;

IplImage* image = 0;
CvMemStorage* pStorageface = 0;
CvHaarClassifierCascade* face_cascade = 0;

void Detect(IplImage* image){
     
    CvSeq * pFaceRectSeq;

    pStorageface = cvCreateMemStorage(0);
     
         pFaceRectSeq = cvHaarDetectObjects
                 (image, face_cascade, pStorageface,
                 1.1,                       // increase search scale by 10% each pass
                 3,                         // merge groups of three detections
                 CV_HAAR_DO_CANNY_PRUNING,  // skip regions unlikely to contain a face
                 cvSize(1,1));            // smallest size face to detect = 40x40
   
   int i;
     
         for(i=0;i<(pFaceRectSeq? pFaceRectSeq->total:0); i++ )
         {
                 CvRect* r = (CvRect*)cvGetSeqElem(pFaceRectSeq, i);
                 CvPoint pt1 = { r->x, r->y };
                 CvPoint pt2 = { r->x + r->width, r->y + r->height };
                 cvRectangle(image, pt1, pt2, CV_RGB(0,0,255), 3, 4, 0);
         }
   
         cvShowImage("Third Eye", image);
}

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

  face_cascade = (CvHaarClassifierCascade *)cvLoad("C:\\Program Files\\opencv\\data\\haarcascades\\haarcascade_frontalface_alt_tree.xml", 0 , 0, 0);

  char* filename = argc == 2 ? argv[1] : "C:/many1.jpg";
   
  image = cvLoadImage(filename,1);

     cvNamedWindow("Third Eye",CV_WINDOW_AUTOSIZE);

  Detect(image);

    //cvShowImage("Third Eye",image);
   
  printf("INFO ABOUT IMAGE %s\n", filename);
  printf("Channels: %d\n", image->nChannels );
     printf("Pixel depth: %d bits\n", image->depth );
     printf("Width: %d pixels\n", image->width );
     printf("Height: %d pixels\n", image->height );
     printf("Image size: %d bytes\n", image->imageSize );
     printf("Width step: %d bytes\n", image->widthStep );

     cvWaitKey(0);

     cvReleaseImage(& image);

     cvDestroyWindow("Third Eye");

     return 0;
}