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73 Cards in this Set
- Front
- Back
- 3rd side (hint)
A narrow-angle lens accelerates the convergence of lines of linear perspective. |
False |
True or False |
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The narrow-angle lens makes objects appear closer together along the z-axis than they actually are. |
True |
True or False |
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A wide 3D interocular distance increases the apparent length of the zh-axis. |
False |
True or False |
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A wide angle lens increases the illusion of depth in a scene because the z-axis is accelerated. |
True |
True or False |
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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 |
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You can capture stereo images with two video cameras that are mounted side-by-side. |
True |
True or False |
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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 |
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Anaglyph |
right-eye and the left-eye views are colored in red and cyan (or any other complementary colors) and superimposed. |
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height in plane |
perceived distance tends to increase as an objects y-axis value increases. |
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parallax |
binocular disparity, how far the right-eye image is shifted from the left-eye image |
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point of convergence (POC) |
index vectors (optical axes) of both eyes intersect when fixating on an object. |
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relative size |
knowledge of object or object's context enables estimate of distance. |
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window |
screen or any other 2D surface on which the 3D image is displayed |
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z-axis |
The axis in the coordinating system that defines depth |
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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 |
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The three most popular current separation methods for watching 3D images are anaphylactic, qquantization, and the shutter system. |
False |
True or False |
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Overlapping planes is the strongest depth cue. |
True |
True or False |
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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 |
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A drawback of active glasses is that they put an additional strain on our perceptual mechanism. |
True |
True or False |
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The narrow-angle lens makes objects appear closer together along the z-axis than they actually are. |
True |
True or False |
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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 |
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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 |
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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 |
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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 |
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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 |
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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 |
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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 |
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Zv-axis |
line (space) from window (screen) to viewer |
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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 |
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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 |
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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 |
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Height in plane is a stronger depth cue than overlapping planes |
False |
True or False |
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Graphic depth factors create the illusion of three-dimensional space on a two-dimensional surface (without the use of motion). |
True |
True or False |
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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 |
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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 |
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Highly saturated colors seem farther than less saturated colors. |
False |
True or False |
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The auto-focus feature of our eyes helps when watching stereo 3D images on-screen. |
False |
True or False |
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We automatically interpret relative size as distance. |
True |
True or False |
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Narrow-angle lenses tend to increase the illusion of a third dimension. |
False |
True or False |
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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 |
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When shooting up or down a large object, the height-in-plane cue is a valid depth indicator. |
False |
True or False |
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In a great depth of field, only a relatively small portion of the z-axis shows objects in focus. |
False |
True or False |
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A wide 3D interocular distance increases the apparent length of the Zv-axis |
True |
True or False |
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depth of field |
area along the z-axis that is in focus |
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forced perspective |
exaggerated linear perspective, usually used to exaggerate perceived depth |
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graphic depth factors |
create the illusion of space on a two-dimensional surface (without the use of motion) |
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horizon line |
vanishing point(s) is(are) located here. |
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interocular distance |
distance between the pupils of our eyes (with the norm set at 2.5 inches or 63.5 millimeters) |
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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 |
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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 |
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The narrow-angle lens makes parallel lines converge much "faster" (more drastically) than when seen normally. |
False |
True or False |
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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 |
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The wide-angle lens refers to a short-focal-length. |
True |
True or False |
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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) |
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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 |
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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 |
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A narrow-angle lens positions aides our perception of linear perspective. |
False |
True or False |
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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 |
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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 |
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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 |
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A 3D illusion is not a natural visual process but an artificially constructed one. |
True |
True or False |
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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 |
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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 |
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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 |
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Accommodation is when our eyes adjust focus to see objects at various distances. |
True |
True or False |
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The wide-angle lens makes objects appear closer together along the z-axis than they actually are. |
False |
True or False |
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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 |
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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 |
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Because the wide-angle lens generates a great depth of field, it de-emphasizes aerial perspective. |
True |
True or False |
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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 |