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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.
In it, a regular motion picture camera system is used to record the images as seen from two perspectives (or computer-generated imagery generates the two perspectives in post-production), and special projection hardware and/or eyewear are used to provide the illusion of depth when viewing the film. Some methods of producing 3D films do not ...
In such situations, where an ortho stereo viewing method is used, a common rule of thumb is the 1:30 rule. [20] This means that the baseline will be equal to 1/30 of the distance to the nearest object included in the photograph. The results of hyperstereo can be quite impressive, [21] [22] [23] and examples of hyperstereo can be found in ...
A stereo transparency viewer is a type of stereoscope that offers similar advantages, e.g. the View-Master. Disadvantages of stereo cards, slides or any other hard copy or print are that the two images are likely to receive differing wear, scratches and other decay. This results in stereo artifacts when the images are viewed.
Computer stereo vision is the extraction of 3D information from digital images, such as those obtained by a CCD camera. By comparing information about a scene from two vantage points, 3D information can be extracted by examining the relative positions of objects in the two panels.
This method has problems with objects moving in the different views, though works well with still life. Stereo cameras are sometimes mounted in cars to detect the lane's width and the proximity of an object on the road. Not all two-lens cameras are used for taking stereoscopic photos.
An active shutter 3D system (a.k.a. alternate frame sequencing, alternate image, AI, alternating field, field sequential or eclipse method) is a technique for displaying stereoscopic 3D images. It works by only presenting the image intended for the left eye while blocking the right eye's view, then presenting the right-eye image while blocking ...
Model used for image rectification example. 3D view of example scene. The first camera's optical center and image plane are represented by the green circle and square respectively. The second camera has similar red representations. Set of 2D images from example. The original images are taken from different perspectives (row 1).