I would like track lights  in the dark from a webcam and create sounds.
Firstly I am trying to create for one light,sound changing with the position of the light.
I would like keep the  lights for a size given
Next create for multiple lights
Please help me


import processing.video.*;
Capture myCapture;

color trackColor;
import ddf.minim.*;
import ddf.minim.signals.*;
Minim minim;
AudioOutput out;
SineWave sine;
void setup() {
 size(320, 240);
 
 minim = new Minim(this);
 // get a line out from Minim, default bufferSize is 1024, default sample rate is 44100, bit depth is 16
 out = minim.getLineOut(Minim.STEREO);
 // create a sine wave Oscillator, set to 440 Hz, at 0.5 amplitude, sample rate from line out
 sine = new SineWave(440, 0.5, out.sampleRate());
 // set the portamento speed on the oscillator to 200 milliseconds
 sine.portamento(200);
 // add the oscillator to the line out
 out.addSignal(sine);
 myCapture = new Capture(this, width, height,30);
 
 noFill();
smooth();
strokeWeight(4.0);
stroke(0);


}

void captureEvent(Capture myCapture) {
 myCapture.read();
 
}

void draw() {
 
 loadPixels();
 image(myCapture, 0, 0);

 filter(INVERT);
 filter(THRESHOLD,0.2);
 filter(INVERT);
 float closestDiff = 500.0f;
   int closestX =0;
   int closestY =0;
 for(int x = 0; x<myCapture.width;x++){
 for (int y=0;y<myCapture.height;y++){
      int loc = x + y*myCapture.width;
    color currentColor = myCapture.pixels[loc];
 float r1 = red(currentColor); float g1 = green(currentColor); float b1 = blue(currentColor);
    float r2 = red(trackColor); float g2 = green(trackColor);   float b2 = blue(trackColor);
float d = dist(r1,g1,b1,r2,g2,b2);
   if(  (d < closestDiff)){
     closestDiff = d;
     closestX =x;
     closestY =y;
   println("En X ="+x+" et Y = "+y+ "le pixel est blanc" );
   float freq = map(closestX, 0, height, 1500, 60);
   
sine.setFreq(freq);
 float Pan=1-(closestY/float(width))*2;

 }
loc++;

   }
   }
   }