Unit 2.1.B: Perception - Visual Perception

Binocular depth cues

Depth information that requires both eyes.

Retinal disparity

Each eye sees a slightly different image; the brain compares them to judge distance.

Convergence

Your eyes move inward when looking at something close; the amount of inward movement signals depth.

Monocular depth cues

Depth information that works with just one eye.

Relative clarity

Clear objects appear closer; blurry objects seem farther away.

Relative size

Smaller objects look farther away if we know they’re normally the same size.

Texture gradient

Less detailed (smoother) textures appear farther away.

Linear perspective

Parallel lines look like they meet in the distance.

Interposition

If one object blocks another, we see the blocking object as closer.

Perceptual Constancies

We understand that objects stay the same shape, size, and color even when our viewing conditions change.

Apparent movement

Something looks like it’s moving even though it isn’t (like lights flashing in sequence).