Load and Display Image

/**
 * Load and Display 
 * 
 * Images can be loaded and displayed to the screen at their actual size
 * or any other size. 
 */

PImage* img;  // pointer version of PImage

void setup() {
  size(640, 360);

  // The image file must be in the data folder of the current sketch 
  // to load successfully
  img = loadImage("moonwalk.jpg");  // returns PImage*
}

void draw() {
  background(0);

  // Displays the image at its actual size at point (0,0)
  image(img, 0, 0);

  // Displays the image at point (0, height/2) at half of its size
  image(img, 0, height/2, img->width/2, img->height/2);
}