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#include <iostream>
#include <opencv2/core/core.hpp>
#include <opencv2/highgui/highgui.hpp>
#include <opencv/highgui.h>
#include <opencv/cv.h>
using namespace cv ;
using namespace std ;

void detectAndDisplay( Mat frame );
/** Global variables */
String face_cascade_name = "/Users/powenko/Desktop/靜宜大學/20161001-課程-無人機安全監控/OpenCV/opencv/XCode/07Face/sample21_haarcascades_Camera/test/opencv-master/data/haarcascades/haarcascade_frontalface_alt.xml";
String eyes_cascade_name = "/Users/powenko/Desktop/靜宜大學/20161001-課程-無人機安全監控/OpenCV/opencv/XCode/07Face/sample21_haarcascades_Camera/test/opencv-master/data/haarcascades/haarcascade_eye_tree_eyeglasses.xml";
CascadeClassifier face_cascade;
CascadeClassifier eyes_cascade;
string window_name = "Capture – Face detection";
RNG rng(12345);
//下載　https://github.com/opencv/opencv/tree/master/data/haarcascades

int main() {

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;
}
VideoCapture cap(0); //開啟攝影機
if(!cap.isOpened()) return -1; //確認攝影機打開
Mat frame; //用矩陣紀錄抓取的每張frame
for(;;){
if (cap.isOpened())
{
//frame=cvQueryFrame(cam);
cap>>frame; //把取得的影像放置到矩陣中
if( !frame.empty() )
{ detectAndDisplay( frame ); }
else
{ printf(" –(!) No captured frame — Break!"); break; }

if(waitKey(30) >= 0) break; //按鍵就離開程式

}
}
system("PAUSE");
return 0;
}

void detectAndDisplay( Mat frame )
{
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, Size(30, 30) );
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 ), 4, 8, 0);
Mat faceROI = frame_gray( faces[i] );
std::vector<Rect> eyes;
//– In each face, detect eyes
eyes_cascade.detectMultiScale( faceROI, eyes, 1.1, 2, 0 , Size(30, 30) );
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[j].height)*0.25 );
circle( frame, center, radius, Scalar( 255, 0, 0 ), 4, 8, 0 );
}
}
imshow(window_name, frame); //建立一個視窗,顯示frame到camera名稱的視窗

}

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