Image-side perspective and stereoscopy

John Bercovitz

doi:10.1117/12.307152

30 April 1998 Image-side perspective and stereoscopy

John Bercovitz

Proceedings Volume 3295, Stereoscopic Displays and Virtual Reality Systems V; (1998) https://doi.org/10.1117/12.307152
Event: Photonics West '98 Electronic Imaging, 1998, San Jose, CA, United States

Abstract

Correct perspective is crucial to orthostereoscopy. That is to say, the observer must view from the same points in space, relative to the image, that the stereo camera's lenses had relative to the scene. Errors in placement of the observation points result in distortion of the reconstructed stereo image. Although people adapt easily to visual distortions, they may not do it well enough or quickly enough for critical telepresence and telerobotic applications. Further, it is difficult for humans to reliably determine by sight the correct observation point relative to an image. A mathematical guide to correct perspective is therefore useful. The mathematical key to perspective is that all images must subtend at the eye the same angles which the objects that generated them subtended at the camera. The center of perspective on the object side of a camera is the entrance pupil, but where is the center of perspective on the image side of an asymmetrical lens? A simple formula simply derived answers that question. By way of background, pertinent optics and stereoscopic reconstruction errors, including perspective error, are reviewed in this paper. New work begins in the fourth section.

Citation Download Citation

John Bercovitz "Image-side perspective and stereoscopy", Proc. SPIE 3295, Stereoscopic Displays and Virtual Reality Systems V, (30 April 1998); https://doi.org/10.1117/12.307152

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