März 5, 2012

import processing.video.*;
int W = 640;
int H = 480;

color pColor;
Capture cam;

int res = 4;
int thresh = 20;

color[] buffer;

void setup()
{
 size ( W, H );
 background(0);
 
 buffer = new color[W * H];
 cam = new Capture(this, W, H);
 
}

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

void draw()
{
 sampleAndPaint();
 swapBuffer();
}

void sampleAndPaint()
{
 fill(0, 30);
 rect(0, 0, W, H);
 for ( int i = 0; i < W; i+= res )
 {
   for ( int j = 0; j < H; j+=res )
   {
     int offset = i + j * W;
     color c = cam.pixels[offset];
     color r = buffer[offset];
     
     float cB = brightness(c);
     float rB = brightness(r);
     
     float delta = abs ( cB - rB );
     
     if ( delta > thresh )
     {
       fill ( 0, 255, 0 );
       noStroke();
       //res = int(random(1,res));
       rect ( i, j, res, res );
     }
   }
 }
}
     
void swapBuffer()
{
  
 arrayCopy(cam.pixels, buffer);
}