Saturday 15 February 2014

How to Declare Array in JavaScripts

<html>
<head>
<title></title>
</head>

<body>

<script type="text/Javascript">

 obj = new Array ("Bhargav","Harsh","Sagar","Hemin","Apurv","Jeshal","Ali","Chirag");
 document.write(obj);

</script>


</body>
</html>
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How to create a Function in JavaScript

<html>
<head>
<title>JavaScript Training</title>
</head>
<body>
     
<script type="text/javascript">

 function demo()      // Create Function
{
 alert("Hello World !!");
}

demo();     //Calling Function

</script>
</body>
</html>
Tags :

Friday 7 February 2014

Hand Gesture Recognition Code

class FingerDetector{
  PImage out;
  int w,h;
   
  public FingerDetector(int _w, int _h){
  w = _w;
  h = _h; 
  out = createImage(w, h, RGB);
}
   
  void setImage(PImage img){
    out.loadPixels();
      
  
        for(int k = 0; k <img.pixels.length; k++){
        out.pixels[k] = img.pixels[k];
      }
  
    out.updatePixels();
  }
   
//  PImage getImage(){
//    return out;
//  }
   
  boolean goodPixel(int x, int y){
     
  int count_white = 0;
   
  //Finger's tip model .
  float r =  120 /TWO_PI;
   
  //The farest  the hand is placed from the webcam
  //the smallest this needs to be set.
  int finger_size = 8 ;
   
  //For each pixels on the circumference
  //with radius 120/2*pi and with center
  //located at x,y (current pixel's coordinate)...
  for(int k = 0; k < 360; k+=10){
    int x1 =  x + (int)(r*cos(k));
    int y1 =  y + (int)(r*sin(k));
  
    if(x1  >= 0 && x1  < out.width && y1  >= 0 && y1  < out.height)
     
    //...count how many are hand pixel...
    if(brightness((out.pixels[x1+y1*out.width]&0xff0000)>>16)== 255){count_white++;}
  }
    
  //..if they are in the finger's tip region... 
  if( count_white < finger_size  && count_white != 0) return true; //...at x y coordinate we have a finger's tip pixel
  else
  return false;
   
}
}
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