OpenCV detection problem

Processing Libraries
1

So I’m doing a videogame where you use your face to move the gun and blink to shot.
Mi first attempt was doing it like this:

setup()
{
  camara = new Capture( this, ancho, alto  );
  camara.start();
  opencv = new OpenCV(this, ancho, alto );
  opencv.loadCascade(OpenCV.CASCADE_FRONTALFACE);
}
draw()
{
    camara.read();
    opencv.loadImage( camara );
//detect face
    rostros = opencv.detect();
    for (int i = 0; i < rostros.length; i++) 
        {
           PImage cara = camara.get(rostros[i].x, rostros[i].y, rostros[i].width, rostros[i].height);
           
           //eyes opencv

           opencv_ojos = new OpenCV(this, cara );  
           opencv_ojos.loadCascade(OpenCV.CASCADE_EYE); 
           Rectangle[] ojos = opencv_ojos.detect();
           //draw eyes

            stroke(0,0,255);
           
            if(ojos.length!=0 && ojos.length!=1) //only show 2 eyes
            {
              for(int n=0; n<2;n++)
               {
                  noFill();
                  rect(ojos[n].x + rostros[i].x, ojos[n].y + rostros[i].y,ojos[n].width,ojos[n].height);
              }
            } 
       }

And it worked, but the game renders slow because I’m creating the opencv_ojos object several times, so I tried another way:

setup(){
  camara = new Capture( this, ancho, alto  );
  camara.start();
  opencv = new OpenCV(this, ancho, alto );
  opencv.loadCascade(OpenCV.CASCADE_FRONTALFACE);
  opencv_ojos = new OpenCV(this, ancho,alto );  
  opencv_ojos.loadCascade(OpenCV.CASCADE_EYE); 
}
draw()
{
    camara.read();
    opencv.loadImage( camara );
//detect face
    rostros = opencv.detect();
    for (int i = 0; i < rostros.length; i++) 
        {
           PImage cara = camara.get(rostros[i].x, rostros[i].y, rostros[i].width, rostros[i].height);
           
           // load pimage cara into opencv_ojos

           opencv_ojos.loadImage(cara);
           Rectangle[] ojos = opencv_ojos.detect();

           //draw eyes

            stroke(0,0,255);
           
            if(ojos.length!=0 && ojos.length!=1)
            {
              for(int n=0; n<2;n++)
               {
                  noFill();
                  rect(ojos[n].x + rostros[i].x, ojos[n].y + rostros[i].y,ojos[n].width,ojos[n].height);
              }
            }  
}

But in this way, the program does not detect the eyes, so i don’t know what to do, any advice ?
Thanks!

2

I guess without using the specific eye detection function loadCascade() on every new OpenCv object, detection really will be impossible.