Stereoscopic camera and viewing systems with undistorted depth p

Facsimile and static presentation processing – Static presentation processing – Attribute control

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358 91, 358 92, H04N 1300

Patent

active

050652362

ABSTRACT:
Methods for providing stereoscopic image presentation and stereoscopic configurations using stereoscopic viewing systems having converged or parallel cameras may be set up to reduce or eliminate erroneously perceived accelerations and decelerations by proper selection of parameters, such as an image magnification factor q and intercamera distance 2w. For converged cameras, q is selected to be equal to Ve-qwl=0, where V is the camera convergence distance, e is half the interocular distance of an observer, w is half the intercamera distance and l is the actual distance from said first nodal point of each camera to said convergence point, and for parallel cameras, q is selected to be equal to e/w. While converged cameras cannot be set up to provide fully undistorted three-dimensional views, they can be set up to provide a linear relationship between real and apparent depth and thus minimize erroneously perceived accelerations and decelerations for three sagittal planes, x=-w, x=0 and x=+w which are indicated to the observer. Parallel cameras can be set up to provide fully undistorted three-dimensional views by controlling the location of the observer and by magnification and shifting of left and right images. In addition, the teachings of this disclosure can be used to provide methods of stereoscopic image presentation and stereoscopic camera configurations to produce a nonlinear relation between perceived and real depth, and erroneously produce or enhance perceived accelerations and decelerations in order to provide special effects for entertainment, training or educational purposes.

REFERENCES:
patent: 4647965 (1987-03-01), Imsand
patent: 4704627 (1987-11-01), Yuyama et al.
patent: 4723159 (1988-02-01), Imsand
patent: 4819064 (1989-04-01), Diner
patent: 4905081 (1990-02-01), Morton
D. B. Diner and M. von Sydow, "Static Stereo Vision Depth Distortions in Teleoperation," Ergonomics of Hybrid Automated Systems I, edited by W. Karwowski, H. R. Parsaei and M. R. Wilhelm, Elsevier Science Publishers B. V., Amsterdam, 1988, pp. 227-232.
D. B. Diner and M. von Sydow, "Stereo Depth Distortions in Teleoperation," JPL Publication 87-1, Rev. 1, Jet Propulsion Laboratory, Pasadena, CA, May 15, 1988.
Linda M. Strunk and Taro Iwamoto, "A Linearly-Mapping Stereoscopic Visual Interface for Teleoperation," IEEE International Workshop on Intelligent Robots and Systems, IROS'90, pp. 429-436.

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