Hello All,

I have a pretty simple question. I am trying to figure something fairly basic out with the Opencv face tracking script. I am replacing the rectangle with random images. But somehow the image placement takes place in a loop so instead of replacing each face with a random image, it is going through the array randomly and showing all the faces. I can't figure out how to make it select one face from the array and keep it there until another face is detected.

I know why it is running the loop (to do the resizing), but am not sure how else to do it. Thanks!

Code:

import hypermedia.video.*;
import java.awt.Rectangle;

OpenCV opencv;

// contrast/brightness values
int contrast_value    = 0;
int brightness_value  = 0;
PImage[] images = new PImage[4];

void setup() {

    size( 640, 480 );
    opencv = new OpenCV( this );
    opencv.capture( width, height );                   // open video stream
    opencv.cascade( OpenCV.CASCADE_FRONTALFACE_ALT );  // load detection description, here-> front face detection : "haarcascade_frontalface_alt.xml"

    for ( int i = 0; i< images.length; i++ )
      {
        images[i] = loadImage( "monster" + i + ".png" );  
      }

   noCursor();
}


public void stop() {
    opencv.stop();
    super.stop();
}

void draw() {
    opencv.read();
    opencv.contrast( contrast_value );
    opencv.brightness( brightness_value );

    // proceed detection
    Rectangle[] faces = opencv.detect( 1.2, 2, OpenCV.HAAR_DO_CANNY_PRUNING, 40, 40 );

    // display the image
    image( opencv.image(), 0, 0 );


    // draw face area(s)
    noFill();
    stroke(255,0,0);
     int index = int(random(images.length));
     for( int i=0; i<faces.length; i++ ) {
            image(images[index], faces[i].x, faces[i].y, faces[i].width,faces[i].height);  
            
    }      
    
}