Pictorial Depth Cues Visual artists rely on a variety of monocular cues to make their work come to life. You can rely on cues such as linear perspective (a), texture gradient (b), interposition (c), and relative height (d) in an image to infer distance, depth, and position, even if you are wearing an eye patch.
(a)SUPERSTOCK, (b)AGE FOTOSTOCK/SUPERSTOCK, (c)ALTRENDO IMAGES/GETTY IMAGES, (d)ROB BLAKERS/LONELY PLANET/GETTY IMAGES