Silhouette extraction

import hypermedia.video.*;        //  Imports the OpenCV library
import processing.video.*;
import org.openkinect.*;
import org.openkinect.processing.*;

MovieMaker mm;
Kinect kinect;
OpenCV opencv;                    //  Creates a new OpenCV Object
PrintWriter pw = null;

PImage depth,copia;
PImage img;
int x=-10,y=-35;
void simplify(PVector[] d, float tol,int s, int e, boolean[] out) {
  out[s]=out[e]=true;
  if(abs(s-e)<=1) return;
  float distance,area, m=0.0;
  int  who=-1;
  PVector a =  d[s];
  PVector b = d[e];
  PVector c = null;
  for(int i=s+1;i<e;i++) {
    c=d[i];
    area=abs(a.x*b.y+b.x*c.y+c.x*a.y - b.x*a.y-c.x*b.y-a.x*c.y);
    distance = area/a.dist(b);
    if(distance>m && distance>tol) {
      m=distance;
      who=i;
    }
  }
  if(who==-1) return;
  simplify(d,tol,s,who,out);
  simplify(d,tol,who,e,out);
}

void setup() {
  String filename = sketchPath("out.txt");
  try {pw = new PrintWriter(new FileOutputStream(filename));} catch(Exception e) {println("FNFE"); }
  size( 640, 480 );
  depth = createImage(640,480,RGB);
  img = createImage(640,480,RGB);
  copia = createImage(640,480,RGB);
  kinect = new Kinect(this);
  kinect.start();
  kinect.enableDepth(true);
  kinect.enableRGB(true);
//  mm = new MovieMaker(this, width, height, "silueta.mov");
  opencv = new OpenCV( this );
}


void draw() {
  background(0);
  int histo[] =  new int[256];
  img = kinect.getRGBImage();
  //img.updatePixels();
  // opencv.loadImage( "depth.png",width, height );     //  Opens a video capture stream
  opencv.allocate(640,480);
  //opencv.read();
  //image( opencv.image(), 0, 0 );  //  Displays the image in the OpenCV buffer to the screen

  //depth.pixels = NativeKinect.getDepthMap();
  depth = kinect.getDepthImage();
  copia=depth.get();
  for(int i=0;i<640*480;i++) { histo[int(brightness(depth.pixels[i]))]++;
  if(brightness(copia.pixels[i])>=135 && brightness(copia.pixels[i])<=140) /* copia.pixels[i]=color(200) */ ;   else copia.pixels[i]=color(0);
  }
  //depth.updatePixels();
  opencv.copy(copia);
  image(img,x,y);
  stroke(255);

  Blob[] blobs = opencv.blobs( 15000, width*height/2, 100, true, OpenCV.MAX_VERTICES*4 );

  if( blobs.length>0) {
    PVector[] d = new PVector[blobs[0].points.length];
    for( int j=0; j<blobs[0].points.length; j++ ) {
      d[j]=new PVector(blobs[0].points[j].x,blobs[0].points[j].y);
    }

    boolean out[] = new boolean[blobs[0].points.length];

    simplify(d,5,0,blobs[0].points.length-1,out);


    stroke(250,0,0);
    //background(0);
    int i=0;
    strokeWeight(2);
    noFill();
    beginShape();
    for( int j=0; j<blobs[i].points.length; j++ ) {
      if(out[j]==true) {
        vertex( blobs[i].points[j].x, blobs[i].points[j].y );
        pw.print(blobs[i].points[j].x +" "+ blobs[i].points[j].y + " ");
      }
    }
    endShape(CLOSE);
    pw.println();
  // mm.addFrame();

  }
}
/*
void keyPressed() {
  if (key == ' ') {
    // Finish the movie if space bar is pressed
  //  mm.finish();
    // Quit running the sketch once the file is written
    exit();
  }
}
*/

void stop() {
  kinect.quit();
  super.stop();
}

void keyPressed() {
  if (key == 'd') {
 x--;

  }
  else if (key == 'r') {
y--;
  }
  println (x+","+y);

  if (key == ' ') {
    // Finish the movie if space bar is pressed
  //  mm.finish();
    // Quit running the sketch once the file is written
    exit();
  }
}