Perception

Perception:




We need to know

a) what is out there
b) where it is
c) how it is acting with respect to us and other things

 

I. Classic approach to defining perception

How is a 2 dimensional retinal image transformed into perception of a three-dimensional world?

II. Perception of depth:

absolute distance:

relative distance:

1. Monocular depth cues:

a. Linear Perspective

 

 

 

 

b. texture gradient

 

 

 

 

c. aerial perspective:

 

 

 

 

d. shadow/shading:

 

 

 

 

 

e. motion parallax

 

 

 

 

 

 

 

 

2. Binocular & oculomotor depth cues:

 

a. Stereopsis(a.k.a. binocular disparity):

 

 

 

 

 

b. convergence:

 

 

 

 

c. accommodation:

 

 

 

 

 

3. Perception via Self Motion:

a. Optic Flow:

 

 

 

 

 

• Radial Outflow

 

 

 

 

 

 

• Radial inflow:

 

• Parallel flow: