Unit 4.5 - Depth Perception

Question 1

What is the trichromatic theory?

Answer 1

All colours are a combination of blue, red, or green. These are the colours of cones.

Question 2

What are the types of colourblindness?

Answer 2

Deurteranopia - green blindness
Tritanopia - blue blindness
Protanopia - red blindness

Question 3

What is the opponent-processing theory? What are the three pairs?

Answer 3

When one colour stops firing - you will see the opposite of the pair. The three pairs are:

• black and white
• yellow and blue
• red and green

Question 4

What does complex perception require?

Answer 4

Different neurons required for processing movement, lines, patterns, contrast, symmetry, faces.

Question 5

What is visual agonsia?

Answer 5

Unable to picture visual information.

Question 6

What is prosopagnosia?

Answer 6

Hard time remembering facial features. Can rather use hats and hair to identify people.

Question 7

What is included in depth perception?

Answer 7

There is binocular cues which require two eyes, and monocular cues which requires one eye.

Question 8

What is retinal disparity? Binocular cue

Answer 8

One eyed cover, then index finger shown, then other eye closed it shows different visual image, Eyes see something different each time.

Question 9

What does convergence mean? Binocular cue

Answer 9

Muscle feedback of eyes as object is closer or farther. . Think of eyes closing in together at nose at closer objects.

Question 10

What are the modular cues include?

Answer 10

Size - smaller = further, larger = closer
Height - taller = farther, shorter = closer
Interposition - overlapping = closer, one covered = farther
Texture - Clear = closer, less clear = farther
Shadow - shadow size = depth of something
Linear perspective = convergence of line = farther
Motion paradox = things that move slower = farther