Monocular Cues

Relative Size- When objects are at different distances, the surroundings are used to judge the size of the object. This can cause the object further away to seem either larger or smaller than it really is.

Relative motion- An object seems to move backwards faster the closer they are to the observer.

Relative height- Objects that are higher in our field of vision seem to be further away.

Relative clarity- Sharp objects seem closer to the observer while blurry objects are further away.

Interposition- If the view of one object is disrupted by another, the object that is blocking another is reprieved as closer to us.

                                                       
Texture Gradient- A slight, slow change from a coarse to a fine texture causes objects that are far apart to appear smaller and more tightly packed.