size(1400,900);
smooth();

PImage img = loadImage("bill.jpg");

float init = 0.1;

float x = 0;
float step = 1.3;

float y = -img.width*init/2;

float w;
float h;

tint(255, 20);
for (float p = init; y < height; p *= step) {
  w = img.width*p;
  h = img.height*p;
  // Complete row
  for (x = -w/2; x < width; x += w/2) {
    image(img, x, y, w, h);
  }
  y += h/2.3;
}

save("wp.jpg");