Depth Perception- monocular cues cont.

Interposition

Interposition is a visual signal that an object is closer than the ones behind it because the closer object covers part of the farther object.

https://s-media-cache-ak0.pinimg.com/originals/23/80/95/23809553d24075c46638a459d506d5e4.jpg

See how the first domino is blocking the second domino. This gives the effect that the first domino is closer. With this effect, it makes it seem like there is depth.

Texture Gradient

Texture Gradient is when objects closer to you have a more defined shape or a clear crisp texture, and objects that are increasingly further away from you will be a less defined shape or have a less clear crisp texture.

http://www.psypress.co.uk/mather/resources/topic.asp?topic=ch10-tp-01

Take this picture of these lily pads as an example. In the closer lily pads, you can see the distinct shape and texture of the lily pads, but as you move farther out the lily pads have a less distinct shape and you can't really define them very well. As a result, it creates depth in the photo.

Linear Perspective

Linear perspective is when parallel lines appear to converge with distance. The more the lines seem to converge, the greater the perceived distance.

http://study.com/academy/lesson/linear-perspective-in-renaissance-art-definition-example-works-quiz.html

Railroad tracks are a great example. As you look down the pair of railway lines, they seem to almost touch at the end. This gives the effect that there is distance as you look down the tracks. But, in reality this is a 2D picture and there is no distance. You just perceive depth in this picture.