abe_noise

PImage img;
void setup() {
  background(220);
  img = loadImage("http://i.imgur.com/zRbqFzW.jpg");
  size(img.width, img.height);
}
void draw() {
  for (int i=0; i<200; i++) {
    // calculate start point for the line
    PVector start = new PVector(random(width), random(height));

    // calculate end point
    float a = TAU * 2 * noise(map(start.x, 0, width, 0, 4), map(start.y, 0, height, 0, 4));
    PVector end = PVector.fromAngle(a);
    float len = random(3, 15);
    end.mult(len);
    end.add(start);

    // calculate color
    PVector pointInImage = new PVector(map(start.x, 0, width, 0, img.width), map(start.y, 0, height, 0, img.height));
    color c = img.get((int)pointInImage.x, (int)pointInImage.y);

    // draw
    stroke(c,50);
    strokeWeight(random(2, 6));
    line(start.x, start.y, end.x, end.y);
  }
}

void keyPressed() {
  save(random(233)+".jpg");
}