Seeing 3D 3.1.4

Question 1

What is accommodation?

Answer 1

The ability of your eye’s lens to adjust its curvature and thickness

certain muscles contract/alter the shape of the lens with closer objects

the same muscles relax when looking at things far away

Question 2

What is binocular cues?

Answer 2

Cues that depend on both eyes

(eye picks up 2D images, but went sent to the brain images are translated into 3D)

Question 3

What is binocular parallax(retinal disparity)?

Answer 3

Both your eyes see the same object but receive a slightly different image on the retina because your eyes are a few inches apart

retinal disparity = difference between images

Question 4

What is convergence?

Answer 4

When your eyes turn inwards like when they focus on a near by object

when your eyes “cross”

Question 5

What is depth perception?

Answer 5

The visual ability to perceive the world in three dimensions.
(helps you to be precise, estimate distance, helps in survival)

Question 6

What is interposition?

Answer 6

interposition = “come between”

When one object comes between you and another object, partly blocking you view of that object

(blocking object is closer, this gives a perspective on distance)

Question 7

What is linear perspective?

Answer 7

The fact perceive depth when you see two parallel lines that seem to converge in an image

Question 8

What is monocular cues?

Answer 8

Cues available to each eye separately.

Question 9

What is motion parallax(relative motion)?

Answer 9

Perceiving closer objects moving faster than distant objects when in motion

ex. car(the trees near the roadside moving faster than the trees in the distance)

Question 10

What is motion perception?

Answer 10

Perceiving the speed and direction of objects based on visual input.

(helps preform different activities)

Question 11

What is phi phenomenon?

Answer 11

When adjacent lights blink in quick succession and you brain perceives it as a single light moving back and forth

ex. bar lights, new york times square

Question 12

What is relative size?

Answer 12

The fact if two objects are roughly the same size, the object closer looks the largest

(father away = opposite)

Question 13

What is stroboscopic movement?

Answer 13

When the brain perceives motion in slightly varying images shown in rapid speed

ex. flipping through the pages of a book

Question 14

What are two types of binocular cues?

Answer 14

Retinal disparity and convergence

cues help determine and analyze distance

Question 15

What are other examples of monocular cues?

Answer 15

Light/Shadow, Texture Gradient, and Aerial Perspective

Question 16

What is the visual Cliff Test?

Answer 16

Created by psychologists E.J. Gibson and R.D. Walk

measures the depth perception in both human infants and animals

helps us understand whether an infant’s ability to perceive depth is an innate(natural) behavior or learned one

Question 17

What are the depth cues of monocular?

Answer 17

Interposition, relative size, and linear perspective (rely on the use of only one eye)

Question 18

What does linear perspective add to art?

Answer 18

Linear perspective adds depth and portrays space.