Hi everyone,

I'm chasing 2 answers to help with a script I'm currently working on + any other additions, revisions or simpler ways you can see on what I've done already.
 
I've currently got an OpenCV head tracking script that identifies a rectangle one head height below the actual head and its averaging the color into a RGB format.

This output is too complex for what I need so I need a way to simplify the numbers down into the ones below, in addition to this once simplified I need the number in brackets to be assigned to a 'cref' integer for later use.
Red - 255, 0, 0 (1)
Green - 0, 255, 0 (2)
Blue - 0, 0, 255 (3)
Yellow - 0, 255, 255 (4)
Black - 0, 0, 0 (5)
White - 255, 255, 255 (6)

I envision a huge < & > else if statement but wanted to see if anyone had other thoughts on how to make it more streamlined.

The second question: I want this all this like a slideshow, by that I mean. Until someone walks into the frame I want the head tracking to continuously scan. But once it identifies someone's head I don't want it to refresh, I want it to display the simplified color for 20seconds then go back to searching for another head.
I've seen many different ways to do this but I cant have the program using a wait function or anything like that as I need some other functions run during this process.

Here is my code:

1. import hypermedia.video.*;
2. import java.awt.Rectangle;
3. 
   
4. OpenCV opencv;
5. 
   
6. float grabAverageR;
7. float grabAverageG;
8. float grabAverageB;
9. color grabAveCol;
10. PImage grab;
11. 
    
12. void setup() {
13.   size( 540, 420 );
14.   opencv = new OpenCV(this);
15.   opencv.capture(width, height);
16.   opencv.cascade(OpenCV.CASCADE_FRONTALFACE_ALT);
17.  
    
18.   Rectangle[] faces;
19. }
20. 
    
21. void draw() {
22.   opencv.read();
23.   image( opencv.image(), 0, 0 );
24.   filter(POSTERIZE, 3);
25.     // detect anything ressembling a FRONTALFACE
26.     Rectangle[] faces = opencv.detect();
27.    
    
28.   // draw detected face area(s)
29.   noFill();
30.   stroke(255, 0, 0);
31.   for ( int i=0; i<faces.length; i++ ) {
32. 
    
33.     noFill();
34.     rect( faces[i].x, faces[i].y, faces[i].width, faces[i].height ); 
35. 
    
36.     grab=get(faces[i].x, faces[i].y+int(faces[i].height*1.75), faces[i].width, faces[i].height);
37. 
    
38.     stroke(0, 255, 0);
39.     rect(faces[i].x, faces[i].y+(faces[i].height*1.75), faces[i].width, faces[i].height);
40. 
    
41.     grab.loadPixels();
42. 
    
43. 
    
44.    //return values to 0          
45.     grabAverageR=0;
46.     grabAverageG=0;
47.     grabAverageB=0;
48. 
    
49.     for (int t=0;t<grab.pixels.length;t++) {
50.       grabAverageR=grabAverageR+red(grab.pixels[t]);
51.       grabAverageG=grabAverageG+green(grab.pixels[t]);
52.       grabAverageB=grabAverageB+blue(grab.pixels[t]);
53.     }
54. 
    
55.     grabAverageR=grabAverageR/grab.pixels.length;
56.     grabAverageG=grabAverageG/grab.pixels.length;
57.     grabAverageB=grabAverageB/grab.pixels.length; 
58. 
    
59.     grabAveCol=color(grabAverageR, grabAverageG, grabAverageB);
60. 
    
61.     fill(grabAveCol);
62. 
    
63.     rect(i*50, 0, 50, 50);
64.     println("R"+int(grabAverageR)+" G"+int(grabAverageG)+" B"+int(grabAverageB));
65.   }
66. }

Thanks in advance for having a look at my problem. :)