Statistically Viable Time Based Smoothing and Deconvolution Algorithm

Algorithm for image smoothing

PImage img;
int a, b,z,u;

void setup() {
  size(1000, 900);
  img = loadImage("sun.png");
  a = 1;
  b = 1;
  z=img.width;
  u=0;
  imageMode(CENTER);
  noStroke();
  background(255);

}

void draw() { 

  float pixel = map(11, 0, width, a, b);
  int x = int(random(img.width));
  int y = int(random(img.height));
  color pix = img.get(x, y);
  fill(pix, 128);
  rect(x-1, y, pixel, pixel);
  rect(x+1, y, pixel, pixel);
  rect(x, y-1, pixel, pixel);
  rect(x, y+1, pixel, pixel);  
  rect(x, y, pixel, pixel); 

}