​

function setup() {

  createCanvas(720, 400);

  img = loadImage('img.jpg'); // Load the image

}

​

function draw() {

  // 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 size

  image(img, 0, height / 2, img.width / 2, img.height / 2);

}