03:37
iphone3
Stereoscopy (also called stereoscopic or 3-D imaging) refers to a technique for creating or enhancing the illusion of depth in an image by presenting two offset images separately to the left and right eye of the viewer. Both of these 2-D offset images are then combined in the brain to give the perception of 3-D depth. Three strategies have been used to accomplish this: have the viewer wear eyeglasses to combine separate images from two offset sources, have the viewer wear eyeglasses to filter offset images from a single source separated to each eye, or have the lightsource split the images directionally into the viewer's eyes (no glasses required).Stereoscopy creates the illusion of three-dimensional depth from images on a two-dimensional plane. Human vision uses several cues to determine relative depths in a perceived scene.[1] Some of these cues are
Stereope Accommodation of the eyeball (eyeball focus Occlusion of one object by anotheSubtended visual angle of an object of known size Linear perspective (convergence of parallel edges)Vertical position (objects higher in the scene generally tend to be perceived as further awaHaze, desaturation, and a shift to bluishness Change in size of textured pattern detailAll the above cues, with the exception of the first two, are present in traditional two-dimensional images such as paintings, photographs, and television. Stereoscopy is the enhancement of the illusion of depth in a photograph, movie, or other two-dimensional image by presenting a slightly different image to each eye, and thereby adding the first of these cues (stereopsis) as well. It is important to note that the second cue is still not satisfied and therefore the illusion of depth is incomplete.
Many 3D displays use this method to convey images. It was first invented by Sir Charles Wheatstone in 1838.[2] Stereoscopy is used in photogrammetry and also for entertainment through the production of stereograms. Stereoscopy is useful in viewing images rendered from large multi-dimensional data sets such as are produced by experimental data. An early patent for 3D imaging in cinema and television was granted to physicist Theodor V. Ionescu in 1936. Modern industrial three dimensional photography may use 3D scanners to detect and record 3 dimensional information.[3] The three-dimensional depth information can be reconstructed from two images using a computer by corresponding the pixels in the left and right images (e.g.,[4]). Solving the Correspondence problem in the field of Computer Vision aims to create meaningful depth information from two images.Anatomically, there are 3 levels of binocular vision required to view stereo images 1 Simultaneous perceptio2 Fusion (binocular 'single' visio 3 Stereopsis.These functions develop in early childhood. Some people who have strabismus disrupt the development of stereopsis, however orthoptics treatment can be used to improve binocular vision. A person's stereoacuity determines the minimum image disparity they can perceive as depth.
Stereope Accommodation of the eyeball (eyeball focus Occlusion of one object by anotheSubtended visual angle of an object of known size Linear perspective (convergence of parallel edges)Vertical position (objects higher in the scene generally tend to be perceived as further awaHaze, desaturation, and a shift to bluishness Change in size of textured pattern detailAll the above cues, with the exception of the first two, are present in traditional two-dimensional images such as paintings, photographs, and television. Stereoscopy is the enhancement of the illusion of depth in a photograph, movie, or other two-dimensional image by presenting a slightly different image to each eye, and thereby adding the first of these cues (stereopsis) as well. It is important to note that the second cue is still not satisfied and therefore the illusion of depth is incomplete.
Many 3D displays use this method to convey images. It was first invented by Sir Charles Wheatstone in 1838.[2] Stereoscopy is used in photogrammetry and also for entertainment through the production of stereograms. Stereoscopy is useful in viewing images rendered from large multi-dimensional data sets such as are produced by experimental data. An early patent for 3D imaging in cinema and television was granted to physicist Theodor V. Ionescu in 1936. Modern industrial three dimensional photography may use 3D scanners to detect and record 3 dimensional information.[3] The three-dimensional depth information can be reconstructed from two images using a computer by corresponding the pixels in the left and right images (e.g.,[4]). Solving the Correspondence problem in the field of Computer Vision aims to create meaningful depth information from two images.Anatomically, there are 3 levels of binocular vision required to view stereo images 1 Simultaneous perceptio2 Fusion (binocular 'single' visio 3 Stereopsis.These functions develop in early childhood. Some people who have strabismus disrupt the development of stereopsis, however orthoptics treatment can be used to improve binocular vision. A person's stereoacuity determines the minimum image disparity they can perceive as depth.
