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Stereograms - Papers Online

Stereograms


Single Image Random Dot (SIRDS) are not only a lot of fun, but they demonstrate many of the properties of stereopsis. "Stereopsis" means that each eye sees a slightly different image, also known as three dimensional or 3D. Stereopsis is essential for our perception of depth.
Leonardo da Vinci demonstrated in his writings that he understood stereopsis, but the 19th century British physicist Charles Wheatstone is usually credited with its first clear demonstration. Wheatstone invented a stereoscope, a device which presented the first .
The first random dot stereogram was invented by Dr. Bela Julesz in 1959 as an experiment to test stereopsis, the ability to see in 3D. By using a random dot ...

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within the small shape have been shifted to the left. (fig. 3). When the two rectangles are viewed together as a stereo pair, the image of the circle appears to float above the background. (fig. 4).

In 1979 Christopher Tyler discovered that the offset scheme could be applied to a single image. This was the birth of the single image random dot stereogram (fig. 5).

Depth perception depends on having two eyes. Most people who have depth perception can see a Magic Eye image. People with impaired depth perception or people who have one eye which is extremely dominant will have more difficulty seeing stereograms.

A stereogram is seen by allowing the eyes to diverge. It's as if you're focused on an object that is more distant than the printed page. However, if you cross your eyes you will invert the image (see the image inside out). Crossing the eyes may also strain the eyes. The normal diverging technique can actually help you learn to relax your eyes

There are many ...

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become three very easily. If that is the case, you have started to adjust to seeing 3D. Notice how your eyes feel and maintain the same feeling while you slowly move your eyes downward to the center of the stereogram. If you see only two dots, you are probably looking at the dots themselves. Look through the dots. Try again. Aim your eyes between the dots and into the distance. If you see four dots instead of three, you're almost there. Relax and aim your eyes further into the distance. Let your eyes drift outward and make the two middle dots slide towards each other until they merge or overlap. If you can't get the inside dots to move towards each other, you need to relax your eye muscles ...

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Stereograms. (2008, June 13). Retrieved December 23, 2024, from http://www.essayworld.com/essays/Stereograms/85197
"Stereograms." Essayworld.com. Essayworld.com, 13 Jun. 2008. Web. 23 Dec. 2024. <http://www.essayworld.com/essays/Stereograms/85197>
"Stereograms." Essayworld.com. June 13, 2008. Accessed December 23, 2024. http://www.essayworld.com/essays/Stereograms/85197.
"Stereograms." Essayworld.com. June 13, 2008. Accessed December 23, 2024. http://www.essayworld.com/essays/Stereograms/85197.
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PAPER DETAILS
Added: 6/13/2008 07:08:09 PM
Category: Miscellaneous
Type: Premium Paper
Words: 1535
Pages: 6

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