Stereoscopic camera and viewing systems with undistorted depth presentation and reduced or eliminated erroneous acceleration and deceleration perceptions, or with perceptions produced or enhanced for special effects
US5065236A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 2, 1990 |
| Grant date | Nov 12, 1991 |
| Priority date | — |
| Expiry date | Nov 2, 2010 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N13/296
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
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 …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.