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30 June 1992 Distortions in stereoscopic displays
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An investigation into two major potential sources of distortion in stereoscopic displays, namely magnification and vertical disparity, is presented. It is shown that there exist vertical as well as horizontal parallaxes in a 3-D image generated by a pair of TV cameras which are spatially rotated and spaced apart. This could well limit the potential usefulness of stereoscopic television systems, as it unfavorably affects the observer's ability to fuse the corresponding left and right images. An expression for disparity in the y-direction is derived which shows its direct relation to the rotation angle of the TV cameras from the parallel position. Display distortion due to the difference between the depth magnification and the magnification of the xy-plane is also examined. This class of distortion detracts from the realism of the display and hence has undesired effects in tasks involving visual inspection. The equations relating these magnifications to various parameters of the stereoscopic television system are given and the condition under which the two are identical is discussed.
© (1992) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Aladdin M. Ariyaeeinia "Distortions in stereoscopic displays", Proc. SPIE 1669, Stereoscopic Displays and Applications III, (30 June 1992);


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