Depth Perception in monocular sight (7)

  1. Light (Shading) and Shadows

  2. Relative dimensions (and their cognition)

  3. Occlusions / Interposition

  4. Texture Gradient of a Surface

  5. Atmospheric effects : Visibility Variation

  6. Linear Perspective

  7. Height in Visual Field

derives from the fact that the horizon is higher in the visual field than the ground near our feet. Therefore, the further a object is from us, the higher it will appear in our view