Hello All!!  

I want to use the simple, attached facial detection code to scale images on my screen up and down. When someone 

moves their head in, the red facial detection box gets larger as a face gets larger in the camera causing the image to get smaller or moving a face away from the camera (causing the red box to get smaller) the image would get larger. I do not know how to make this happen, still new to processing! 

please help! I hope someone out there can spread some light on the subject. 

best regards

Peter  

2. 
   
3. import hypermedia.video.*;
4. import java.awt.Rectangle;
5. import processing.serial.*;        
6. 
   
7. int gx = 15;
8. int gy = 35;
9. int spos=90;
10. 
    
11. 
    
12. 
    
13. Serial port; 
14. 
    
15. OpenCV opencv;
16. 
    
17. // contrast/brightness values
18. int contrast_value    = 0;
19. int brightness_value  = 0;
20. 
    
21. void setup() {
22. 
    
23.     size( 640, 480 );
24. 
    
25.     opencv = new OpenCV( this );
26.     opencv.capture( width, height );                   // open video stream
27.     opencv.cascade( OpenCV.CASCADE_FRONTALFACE_ALT );  // load detection description, here-> front face detection : "haarcascade_frontalface_alt.xml"
28. 
    
29. 
    
30. }
31. 
    
32. 
    
33. public void stop() {
34.     opencv.stop();
35.     super.stop();
36. }
37. 
    
38. void draw() {
39. 
    
40.     // grab a new frame
41.     // and convert to gray
42.     opencv.read();
43.     opencv.convert( RGB );
44.     opencv.contrast( contrast_value );
45.     opencv.brightness( brightness_value );
46. 
    
47.     // proceed detection
48.     Rectangle[] faces = opencv.detect( 1.2, 2, OpenCV.HAAR_DO_CANNY_PRUNING, 40, 40 );
49. 
    
50.     // display the image
51.     image( opencv.image(), 0, 0 );
52. 
    
53.     // draw face area(s)
54.     noFill();
55.     stroke(255,0,0);
56.     for( int i=0; i<faces.length; i++ ) {
57.         rect( faces[i].x, faces[i].y, faces[i].width, faces[i].height ); 
58. 
    
59.   }
60. 
    
61. 
    
62. 
    
63. }
64. 
    
65. 
    
66. 
    
67.