Perceiving Objects And Scenes

Question 1

Inverse projection problem

Answer 1

Determining what object caused particular image on retina

Question 2

Why is it difficult to emulate human perception in machines?

Answer 2

1) ambiguity
2) occluded or blurred objects
3) viewpoints

Question 3

Viewpoint invariance

Answer 3

Ability to recognize object regardless of viewpoints

Question 4

Perceptual organization

Answer 4

Grouping of elements from environment into coherent, meaningful objects; grouping and segregation

Question 5

Proof for Gestalt Approach

Answer 5

Apparent movement and illusory contours

Question 6

Gestalt Organizing Principles

Answer 6

1) good continuation
2) pragnanz
3) similarity
4) proximity
5) common fate
6) common region
7) connectedness

Question 7

Properties of figure and ground

Answer 7

• figure more thinglike and memorable
• figure in front of ground
• ground more uniform and extends behind figure
• contours separation figure from ground belongs to figure (border ownership)

Question 8

Global image features

Answer 8

1) degree of naturalness
2) degree of openness
3) degree of roughness
4) degree of expansion
5) color

Question 9

Regularities in the environment

Answer 9

Physical and semantic

Question 10

Likelihood principle

Answer 10

We perceive an object that is most likely to have caused the pattern of stimuli we have perceived