--- /dev/null
+/**
+ * @file objectDetection.cpp
+ * @author A. Huaman ( based in the classic facedetect.cpp in samples/c )
+ * @brief A simplified version of facedetect.cpp, show how to load a cascade classifier and how to find objects (Face + eyes) in a video stream
+ */
+#include "opencv2/objdetect/objdetect.hpp"
+#include "opencv2/highgui/highgui.hpp"
+#include "opencv2/imgproc/imgproc.hpp"
+
+#include <iostream>
+#include <stdio.h>
+
+using namespace std;
+using namespace cv;
+
+/** Function Headers */
+void detectAndDisplay( Mat frame );
+
+/** Global variables */
+//-- Note, either copy these two files from opencv/data/haarscascades to your current folder, or change these locations
+String face_cascade_name = "haarcascade_frontalface_alt.xml";
+String eyes_cascade_name = "haarcascade_eye_tree_eyeglasses.xml";
+CascadeClassifier face_cascade;
+CascadeClassifier eyes_cascade;
+string window_name = "Capture - Face detection";
+RNG rng(12345);
+
+/**
+ * @function main
+ */
+int main( int argc, const char** argv )
+{
+ CvCapture* capture;
+ Mat frame;
+
+ //-- 1. Load the cascades
+ if( !face_cascade.load( face_cascade_name ) ){ printf("--(!)Error loading\n"); return -1; };
+ if( !eyes_cascade.load( eyes_cascade_name ) ){ printf("--(!)Error loading\n"); return -1; };
+
+ //-- 2. Read the video stream
+ capture = cvCaptureFromCAM( -1 );
+ if( capture )
+ {
+ while( true )
+ {
+ frame = cvQueryFrame( capture );
+
+ //-- 3. Apply the classifier to the frame
+ if( !frame.empty() )
+ { detectAndDisplay( frame ); }
+ else
+ { printf(" --(!) No captured frame -- Break!"); break; }
+
+ int c = waitKey(10);
+ if( (char)c == 'c' ) { break; }
+
+ }
+ }
+ return 0;
+}
+
+/**
+ * @function detectAndDisplay
+ */
+void detectAndDisplay( Mat frame )
+{
+ std::vector<Rect> faces;
+ Mat frame_gray;
+
+ cvtColor( frame, frame_gray, CV_BGR2GRAY );
+ equalizeHist( frame_gray, frame_gray );
+ face_cascade.detectMultiScale( frame_gray, faces, 1.1, 2, 0|CV_HAAR_SCALE_IMAGE, Size(30, 30) );
+
+ //-- Detect faces
+ for( int i = 0; i < faces.size(); i++ )
+ {
+ Point center( faces[i].x + faces[i].width*0.5, faces[i].y + faces[i].height*0.5 );
+ ellipse( frame, center, Size( faces[i].width*0.5, faces[i].height*0.5), 0, 0, 360, Scalar( 255, 0, 255 ), 2, 8, 0 );
+
+ Mat faceROI = frame_gray( faces[i] );
+ std::vector<Rect> eyes;
+ eyes_cascade.detectMultiScale( faceROI, eyes, 1.1, 2, 0 |CV_HAAR_SCALE_IMAGE, Size(30, 30) );
+
+ //-- In each face, detect eyes
+ for( int j = 0; j < eyes.size(); j++ )
+ {
+ Point center( faces[i].x + eyes[j].x + eyes[j].width*0.5, faces[i].y + eyes[j].y + eyes[j].height*0.5 );
+ int radius = cvRound( (eyes[j].width + eyes[i].height)*0.25 );
+ circle( frame, center, radius, Scalar( 255, 0, 0 ), 3, 8, 0 );
+ }
+ }
+ //-- Show what you got
+ imshow( window_name, frame );
+}