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73 Cards in this Set

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A narrow-angle lens accelerates the convergence of lines of linear perspective.

False

True or False

The narrow-angle lens makes objects appear closer together along the z-axis than they actually are.

True

True or False

A wide 3D interocular distance increases the apparent length of the zh-axis.

False

True or False

A wide angle lens increases the illusion of depth in a scene because the z-axis is accelerated.

True

True or False

Being slightly "cross-eyed," having left and right eyes each turned inward toward each other, is a normal part of human visual perception.

True

True or False

You can capture stereo images with two video cameras that are mounted side-by-side.

True

True or False

Overlapping planes is a useful depth cue in 2D photographic systems, but is problematic in 3D stereoscopic photography, film, and video.

False

True or False

Anaglyph

right-eye and the left-eye views are colored in red and cyan (or any other complementary colors) and superimposed.

height in plane

perceived distance tends to increase as an objects y-axis value increases.

parallax

binocular disparity, how far the right-eye image is shifted from the left-eye image

point of convergence (POC)

index vectors (optical axes) of both eyes intersect when fixating on an object.

relative size

knowledge of object or object's context enables estimate of distance.

window

screen or any other 2D surface on which the 3D image is displayed

z-axis

The axis in the coordinating system that defines depth

If all prominent horizontal lines appear to converge at one point, we call this perceptual phenomenon:

A. linear perspective

A. linear perspective


B. linear influence


C. pointillism


D. latitudinal perspective


E. linear prominence

The three most popular current separation methods for watching 3D images are anaphylactic, qquantization, and the shutter system.

False

True or False

Overlapping planes is the strongest depth cue.

True

True or False

Which of the following is synonymous with "binocular disparity?"

A. parallax

A. parallax


B. interocular


C. stereo base


D. stereo illusion


E. point of convergence

A drawback of active glasses is that they put an additional strain on our perceptual mechanism.

True

True or False

The narrow-angle lens makes objects appear closer together along the z-axis than they actually are.

True

True or False

Setting an optimal stereo base must take into account the size of the screen on which the 3D images are projected.

True

True or False

According to Zettl, the industry's claim of binocular stereo 3D being close how we actually see the world is quite accurate.

False

True or False

The point o convergence marks the location of the window and, with it, what appears in back of it, on it, and in front of it.

True

True or False

When creating scenery, you should paint the background objects, slightly bluer and less sharp than the foreground objects to enhance the illusion of depth.

True

True or False

Which of the following graphic depth factors can often be problematic in stereoscopic 3D?

E. aerial perspective

A. overlapping planes


B. relative size


C. linear perspective


D. height in the plane


E. aerial perspective

What are the names of the stereo z-axis pair?

B. Zh and Zv

A. Z1 and Z2


B. Zh and Zv


C. Zf and Zb


D. Za and Zb


E. Zx and Zy

A narrow=angle lens accelerates the convergence of linear perspective.

False

True or False

A wide angle lens increases the illusion of depth in a scene because the z-axis is accelerated.

True

True or False

You can capture stereo images with two video cameras that are mounted side-by-side

True

True or False

Zh-axis

line from window (screen) to horizon

Zv-axis

line (space) from window (screen) to viewer

What aids a rack-focus effect?

A. shallow depth of field

A. shallow depth of field


B. a great depth of field


C.a wide angle lens


D. a fast zoom-in


E. a slow zoom-in

Which of the following is NOT true of human vision?

B. binocular depth cues also apply to monocular vision

A. monocular depth cues also apply to binocular vision


B. binocular depth cues also apply to monocular vision


C. stereoscopic vision adds convergence and accommodation as depth cues


D. an audience can easily understand a monocular photograph, film, or video as representing a 3D space


E. accommodation involves adjustments of focus

Objects that lie close to the camera photograph as relatively large, whereas similar objects positioned on the z-axis only a short distance behind the close object show up in a dramatically reduced image size.

True

True or False

Height in plane is a stronger depth cue than overlapping planes

False

True or False

Graphic depth factors create the illusion of three-dimensional space on a two-dimensional surface (without the use of motion).

True

True or False

Whereas you can actually point at traditional (single-lens) depth cues in a 2D photo or video, the 3D streoscopic depth exists only in your mind.

True

True or False

When using polarization, the light waves for the left-eye image are lined up vertically and, for the right eye, horizontally

False

True or False

Highly saturated colors seem farther than less saturated colors.

False

True or False

The auto-focus feature of our eyes helps when watching stereo 3D images on-screen.

False

True or False

We automatically interpret relative size as distance.

True

True or False

Narrow-angle lenses tend to increase the illusion of a third dimension.

False

True or False

Using a shallow depth of field and controlling the precise portion of the z-axis to be in focus is called controlled focus.

False

True or False

When shooting up or down a large object, the height-in-plane cue is a valid depth indicator.

False

True or False

In a great depth of field, only a relatively small portion of the z-axis shows objects in focus.

False

True or False

A wide 3D interocular distance increases the apparent length of the Zv-axis

True

True or False

depth of field

area along the z-axis that is in focus

forced perspective

exaggerated linear perspective, usually used to exaggerate perceived depth

graphic depth factors

create the illusion of space on a two-dimensional surface (without the use of motion)

horizon line

vanishing point(s) is(are) located here.

interocular distance

distance between the pupils of our eyes (with the norm set at 2.5 inches or 63.5 millimeters)

In the traditional stereoscope, the viewer directs the left eye to the right-eye picture of a scene, and the the right eye to the left-eye picture.

False

True or False

How do we achieve a compression effect on the z-axis?

A. with a narrow-angle lens

A. with a narrow-angle lens


B. with a wide-angle lens


C. by zooming out


D. by having the camera below eye level


E. by having the camera above eye level

The narrow-angle lens makes parallel lines converge much "faster" (more drastically) than when seen normally.

False

True or False

The traditional video and film z-axes extend from the screen to the viewer and from the screen to the horizon.

False

True or False

The wide-angle lens refers to a short-focal-length.

True

True or False

How do we perfeice the origination of the z-axis in traditional television and film presentations?

D. from the screen to the background (horizon)

A. at the side of the frame


B. at the bottom of the frame


C. at the top of the frame


D. from the screen to the background (horizon)


E. from the viewer to the background (horizon)

If several objects are placed along the z-axis, some objects will appear in focus, others will not. The portion of the z-axis at which objects are in focus is called the:

C. depth of field

A. focus perspective


B. focusing point


C. depth of field


D. focus depth


E. focus field

If we know two objects are similar or identical in actual size, we perceive the smaller screen image as the _______ object and the larger screen image as the ________ object.

farther; closer

A narrow-angle lens positions aides our perception of linear perspective.

False

True or False

Which lens zoom position seems to maximally stretch the z-axis?

B. wide-angle

A. narrow angle


B. wide-angle


C. close-angle


D. zoomed-in


E. normal angle

When we see one object partially covering another:

B. we perceive the one doing the covering as lying in front of the other

A. we perceive the one covered as lying in front of the other


B. we perceive the one doing the covering as lying in front of the other


C. we perceive both objects on the same plane


D. the covered object always appears smaller to us


E. the covering object always appears farther away from us

Using a shallow depth of field and controlling the precise portion of the z-axis to be in focus is called rack focus.

False

True or Fasle

A 3D illusion is not a natural visual process but an artificially constructed one.

True

True or False

When using polarization, the light waves for the left-eye image are lined up vertically and, for the right eye, horizontally.

False

True or False

Assuming that no contradictory distance cues are evident and that the camera is shooting parallel to the ground, you will perceive people and objects as being more and more distant the higher they move up in the picture field.

True

True or False

When looking at an object fairly close to us, our brain keeps the index vectors of our two eyes parallel and selects one of the images as dominant.

False

True or False

Accommodation is when our eyes adjust focus to see objects at various distances.

True

True or False

The wide-angle lens makes objects appear closer together along the z-axis than they actually are.

False

True or False

Height in a plane no longer serves as a reliable distance cue in all of the following EXCEPT:

when shooting from above normal eye level

Because the objects along the z-axis look more stretched out with the wide-angle lens, it renders overlapping planes essential as a depth indicator.

False

True or False

Because the wide-angle lens generates a great depth of field, it de-emphasizes aerial perspective.

True

True or False

The interocular distance between the left-eye and right-eye lenses is called the:

B. stereo base

A. overlapping plane


B. stereo base


C. point of convergence


D. window


E. horizon line