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;

}

}