Preamble
A common misconception is that two eyes – binocular vision – is needed to perceive depth in images. As human beings, we actually use multiple cues to work out where objects are in space via vision – things like shading, texture and prior knowledge (context) allow us to successfully perceive depth without a binocular cue. An easy test to demonstrate this is to cover one eye and reach out and pick up an object.
A series of images posted in 2014 demonstrated an artistic principle that dictated that adding strategic lines through an image would give it apparent depth even though it’s presentation is 2D. As an example, consider the picture below:
Careful placement of lines through the image will give it a strong sense of depth:
Examples
