Hi all!
This is a modified version of OpenCv face recognition sketch:

Here is the code:

import hypermedia.video.*;

PFont fontA;
PImage img;
OpenCV opencv;


// valori contrast/brightness
int contrast_value    = 0;
int brightness_value  = 0;
String sFrase;


void setup() {
 fontA = loadFont ("Apple-Chancery-18.vlw");
 size( 640,480 );
 PImage a;  // Dichiara oggetto "a" del tipo PImage
 img = loadImage("Max.png"); // Carica l'immagine nel programma

 opencv = new OpenCV( this );
 opencv.capture( width, height );                   // apri video stream
 opencv.cascade( OpenCV.CASCADE_FRONTALFACE_ALT );  // carica detection description, -> front face detection : "haarcascade_frontalface_alt.xml"


 sFrase = fScegliFrase();

}

void draw() {


    opencv.read();
    opencv.flip( OpenCV.FLIP_HORIZONTAL);
 
 Rectangle[] faces = opencv.detect( 1.1, 2, OpenCV.HAAR_DO_CANNY_PRUNING,90,90 );


 image( opencv.image(), 0,0 );


   for( int i=0; i<faces.length; i++ ) {
    // image(img, faces[i].x+180, faces[i].y-200);
   
   
   

   textFont(fontA, 18);
   text(sFrase, faces[i].x+90,faces[i].y-100);    
 }
}

int fRandomizza (int n) {
 int nRisultato = int (random (n));
 println(nRisultato);
 return nRisultato;
}

String fScegliFrase () {
 String[] frasi = {"Ma che cacchio fai?", "Ma che cacchio pensi?", "Dio cane", "Sono brutto", "cacchio", "vivs l'olio f'oliva"};
 int frasiR = fRandomizza (frasi.length);
 String sFraseScelta = frasi[frasiR];
 return sFraseScelta;
}

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



In this sketch, when processing recognize a face select a random string from the array, but when a new face is recognize, the string displayed is ever the same.


I want that every time that a new faces was recognized, a different array string was displayed.

For example: processing recognize the first face and take the random value of array position (for example "3") that contains the string "Hello".

When a new face was recognize, processing select another different value from array position: ex. array position 5 witch contain the string "House".

Anyone can help me???

Excuse me for my baaaaaad english!