face recognition and face detection using Eigenface

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Hello all there,

I want to start write a program with OpenCV with face recognation and face detection.

I have asked at the weekend this question on this forum and became a answer:

http://answers.opencv.org/question/11552/how-to-start-to-program-face-recognition/

My answer is now:

I have a OpenCV code that started my Webcam. Also can I use(insert) the same to my Webcam start code the function recognition, detection, train and to convert the grayscale the following code?

> #include "highgui\highgui.hpp"
> #include "imgproc\imgproc.hpp"  
> #include < iostream >   
using namespace std;

>using namespace cv;   
>int main()
> {

>     int c;

>     CvCapture *camera;

>     Mat cameraFrame;
>  
>     camera = cvCaptureFromCAM(0); // select 1st camera
>     if(camera == NULL)
>     {
>         cout << "[ERROR] No camera found!" << endl;
>         return -1;
>     }
>  
>     // output window
>     cvNamedWindow("Camera Output", 0);
>  
>     // loop forever till ESC
>     for(;;)
>     {
>         // capture a frame from the camera
>         cameraFrame = cvQueryFrame(camera);
>  
>         // display it
>         if(!cameraFrame.empty())
>             imshow( "Camera Output", cameraFrame );
>         else
>             cout << "[WARN] No frame captured in this loop!" << endl;
>  
>  
>         // test for ESC
>         c = cvWaitKey(10);
>         if(c == 27 /* ESC */)
>             break;
>     }
>  
>     cvReleaseCapture(&camera);
>     cvDestroyWindow("Camera Output");
>  
>     return 0; }

Thanks