LivingMachine/code/Sample0_display.cpp

#include <stdio.h>
#include <opencv2/opencv.hpp>

using namespace cv;

int main(int argc, char** argv )
{
		CvCapture *capture;
    IplImage *image;

		VideoCapture cap(0); // open the default camera
    		if(!cap.isOpened())  // check if we succeeded
   			return -1;
		Mat edges;
		namedWindow("edges",1);
		for(;;)
		{
				Mat frame;
				cap >> frame; // get a new frame from camera
				cvtColor(frame, edges, CV_BGR2GRAY);
				GaussianBlur(edges, edges, Size(7,7), 1.5, 1.5);
				Canny(edges, edges, 0, 30, 3);
				imshow("edges", edges);
				if(waitKey(30) >= 0) break;
		}

		waitKey(0);
		return 0;

}