Stereoscopic 3D: Difference between revisions
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There are several techniques available used to create the illusion of a 3D image with the use of lenses. 3D displays use the same guiding principles as the visual system to exhibit depth. In each eye, slightly different perspectives are presented so that the brain uses the differences between them to give the sense of depth <ref name=”7”> Hurricane Media (2011). Stereoscopic 3D filming and graphics, how 3D works [Video]. Retrieved from https://www.youtube.com/watch?v=IYm3BmnyVrg</ref> <ref name=”8”> Techopedia. 3-D Stereo Technology (S3-D). Retrieved from https://www.techopedia.com/definition/81/3d-stereo-technology-s3d</ref> <ref name=”9”> Gouraud, G. (2011). A Developer's Guide To Stereoscopic 3D In Games. Retrieved from http://www.gamasutra.com/view/feature/134827/a_developers_guide_to_.php?print=1</ref>. | There are several techniques available used to create the illusion of a 3D image with the use of lenses. 3D displays use the same guiding principles as the visual system to exhibit depth. In each eye, slightly different perspectives are presented so that the brain uses the differences between them to give the sense of depth <ref name=”7”> Hurricane Media (2011). Stereoscopic 3D filming and graphics, how 3D works [Video]. Retrieved from https://www.youtube.com/watch?v=IYm3BmnyVrg</ref> <ref name=”8”> Techopedia. 3-D Stereo Technology (S3-D). Retrieved from https://www.techopedia.com/definition/81/3d-stereo-technology-s3d</ref> <ref name=”9”> Gouraud, G. (2011). A Developer's Guide To Stereoscopic 3D In Games. Retrieved from http://www.gamasutra.com/view/feature/134827/a_developers_guide_to_.php?print=1</ref>. | ||
One of the techniques is polarization 3D, that can use active or passive polarized lenses (figure 1 and 2). Anaglyph 3D uses passive red cyan lenses or chromatically opposite colors. These can be considered the classic-type 3D glasses and are a type of passive lenses (figure 3). Head-mounted displays also provide S3D using a separate display optic very close to the eyes. Finally, autostereoscopic 3D is a technique that allows for 3D depth without glasses <ref name=”8”></ref>. | One of the techniques is polarization 3D, that can use active or passive polarized lenses (figure 1 and 2). Anaglyph 3D uses passive red cyan lenses or chromatically opposite colors. These can be considered the classic-type 3D glasses and are a type of passive lenses (figure 3). Head-mounted displays also provide S3D using a separate display optic very close to the eyes. Finally, autostereoscopic 3D is a technique that allows for 3D depth without glasses <ref name=”2”></ref> <ref name=”8”></ref>. | ||
Passive glasses do not require the use of batteries and do not need to be electronically linked to the display mechanism. They use optical filters to selectively sort the right and left images to the correct eye. Newer versions of this technology work by interlacing the left and right images together using a unique screen made of two emitting filters on top of one another. Gouraud (2011) wrote that “each image is displayed using a property of light called polarization. This allows the passive-polarized glasses to then selectively filter out light between two images using the corresponding polarized films. Therefore, each eyepiece must be polarized in a different direction, allowing separate images to be delivered to each eye. In this manner a 3D effect is achieved.” <ref name=”9”></ref> | Passive glasses do not require the use of batteries and do not need to be electronically linked to the display mechanism. They use optical filters to selectively sort the right and left images to the correct eye. Newer versions of this technology work by interlacing the left and right images together using a unique screen made of two emitting filters on top of one another. Gouraud (2011) wrote that “each image is displayed using a property of light called polarization. This allows the passive-polarized glasses to then selectively filter out light between two images using the corresponding polarized films. Therefore, each eyepiece must be polarized in a different direction, allowing separate images to be delivered to each eye. In this manner a 3D effect is achieved.” <ref name=”9”></ref> | ||