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Stereoscopy creates the impression of three-dimensional depth from a pair of two-dimensional images. [5] Human vision, including the perception of depth, is a complex process, which only begins with the acquisition of visual information taken in through the eyes; much processing ensues within the brain, as it strives to make sense of the raw information.
Although there are three lenses present, only the lower two are used for the photograph – the third lens serves as a viewfinder for composition. The Sputnik produces two side-by-side square images on 120 film. It is necessary to take two photographs from different horizontal positions to get a true stereoscopic image pair.
The card image is magnified, offering a wider field of view and the ability to examine the detail of the photograph. The viewer provides a partition between the images, avoiding a potential distraction to the user. A stereo transparency viewer is a type of stereoscope that offers similar advantages, e.g. the View-Master.
A regular, two-dimensional image is all that is needed. The viewer prepares two prints of the identical image and these are placed side-by-side, horizontally, and close together. The pair of identical images are then viewed with the cross-eyed viewing method, the same as one would use in interpreting stereoscopic image pairs.
A person wearing a virtual reality headset, a type of near-eye 3D display. A 3D display is a display device capable of conveying depth to the viewer. Many 3D displays are stereoscopic displays, which produce a basic 3D effect by means of stereopsis, but can cause eye strain and visual fatigue.
sView supports various input stereoscopic formats: side-by-side; over/under; interlaced; dual stream (or separate files); frame-sequential. Stereoscopic format is automatically deduced from a file metadata (when provided), but could be manually set by user. sView allows adjusting stereoscopic pair in horizontal, vertical and angular dimensions for compensation of camera recording defects.
To simply zoom in or use long lenses to get close-up shots with a side-by-side rig leads to a bad roundness. [8] Another advantage is, that the images can be used for the geometrical alignment of the cameras since stereoscopic errors can be seen most easily when the interaxial distance is zero.
In the 19th century, Elliot and Wheatstone studied the subject, and made the first instruments to view stereoscopic drawings as early as 1832." [5] Claudet's inventions and instruments, which placed two near-identical images side by side, where they could then be seen using the world's first "3-D" viewers, fascinated Williams as he learned the ...