ADS710 Advanced Human Factors presentation on Perceptual Illusions

1. Perceptual Illusions | ADS710 Advanced Human Factors
Stereoscopic 3d
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2. FourRequirements
Collecting Sensory Data
1. Stimuli (the images presented)
2. Sensory Organ (the eye)
3. Nerve Pathway (the optic nerve)
4. Processing in the Brain (the occipital lobes)
(Coe)
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3. PerceptualIllusion
“a perception that appears
true but is false”
(Coe)
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4. StereoImage
Actual image is two slightly di erent
two-dimensional images
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5. FusedImage
Perceived image creates
the illusion of depth
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6. MethodAnaglyph
L R
L R
Red lter admits only the red image
Cyan or Blue lter blocks the red, allowing the other
colors
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7. ExampleAnaglyph
Images are viewed from
di erent perspectives,
but appear in the center
of the retina in both
eyes.
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8. RenderingHowItWorks
Behind the Screen
Images are shifted to
Z Axis | Distance From Cameras
Behind the Screen the left in the left
Safe Range
eye's image, and to
Convergence Point (screen) the right in the right
eye's image.
In Front of the Screen
L
X Axis | Horizontal Separation
R
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9. RenderingHowItWorks
Behind the Screen
Images are shifted to
Z Axis | Distance From Cameras
Behind the Screen the left in the left
Safe Range
eye's image, and to
Convergence Point (screen) the right in the right
eye's image.
In Front of the Screen
Convergence Point
Little or no horizontal
shift between left and
right eye.
L
X Axis | Horizontal Separation
R
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10. RenderingHowItWorks
Behind the Screen
Images are shifted to
Z Axis | Distance From Cameras
Behind the Screen the left in the left
Safe Range
eye's image, and to
Convergence Point (screen) the right in the right
eye's image.
In Front of the Screen
Convergence Point
Little or no horizontal
shift between left and
right eye.
In Front of the Screen
Images are shifted to
L R
the right in the left
eye's image, and to
X Axis | Horizontal Separation the left in the right
eye's image.
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11. RenderingExamples
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12. RenderingExamples
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13. Bibliography
Coe, Marlana. “Sensation and Perception.” Human Factors for Technical
Communicators. New York: Wiley Computer Publishing, 1996. pp
5-32. Print.
“Cone Cell.” Wikipedia, The Free Encyclopedia. Wikimedia Foundation,
Inc. 30 October 2011. Web. 6 November 2011.
“Stereopsis.” Wikipedia, The Free Encyclopedia. Wikimedia Foundation,
Inc. 22 October 2011. Web. 6 November 2011.
“Stereoscopy.” Wikipedia, The Free Encyclopedia. Wikimedia Foundation,
Inc. 28 October 2011. Web. 6 November 2011.
“Tristimulus.” Wikipedia, The Free Encyclopedia. Wikimedia Foundation,
Inc. 5 October 2011. Web. 6 November 2011.
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