FaceFound with opencv

ppg.cpp

@@ -4,8 +4,63 @@
 
 #include <iostream>
 
+const int FPS = 30;
+bool isDiscardData = true;
+int countDiscard = 0;
+const int DISCARD_DURATION = 5;
+
 int main() 
 { 
-  std::cout << "Hello World!" << std::endl;
-  return 0;
+  cv::VideoCapture cap;
+  cap.open(0);
+  if (!cap.isOpened())
+  {
+    std::cerr << "[ERROR] Unable to open camera!" << std::endl;
+    return -2;
+  }
+  //If Haard Cascade not found: error
+  cv::CascadeClassifier faceDetector;
+	if( !faceDetector.load("./haarcascade_frontalface_alt.xml"))
+	{
+	std::cerr << "[ERROR] Unable to load face cascade" << std::endl;
+	return -1;
+	};
+  
+  while (true)
+	{
+		if (isDiscardData)
+		{
+			countDiscard++;
+			if (countDiscard == DISCARD_DURATION*FPS)
+				isDiscardData = false;
+		}
+		else
+		{
+			// create a matrix to store the image from the cam
+			cv::Mat frame;
+			// wait for a new frame from camera and store it into 'frame'
+			cap.read(frame);
+			// check if we succeeded
+			if (frame.empty())
+			{
+				std::cerr << "[ERROR] blank frame grabbed" << std::endl;
+				break;
+			}
+						
+			//Draw Rectangle around the face
+			std::vector<cv::Rect> faceRectangles;
+			faceDetector.detectMultiScale(frame, faceRectangles, 1.1, 3, 0,
+			cv::Size(20, 20));
+			cv::rectangle(frame, faceRectangles[0], cv::Scalar(0, 0, 255), 1, 1, 0);
+			//Reduce to ROI
+			cv::Rect foreheadROI;
+			foreheadROI = faceRectangles[0];
+			foreheadROI.height *= 0.5;
+			
+			cv::imshow("Your Face PLS", frame);
+			if (cv::waitKey(1000.0/FPS) >= 0)
+			break;
+		}
+	}
+	return 0;
 }