Optics: measuring and testing – Range or remote distance finding – With photodetection
Patent
1993-06-25
1996-05-28
Buczinski, Stephen C.
Optics: measuring and testing
Range or remote distance finding
With photodetection
2502012, 348135, 364458, H04N 718, G01C 308
Patent
active
055216951
ABSTRACT:
A range or distance estimating apparatus and method estimates the range to various points within a scene by imaging the scene through an optical mask and a lens onto a CCD, and then digitally processing the light intensity values stored in the CCD. The optical mask is designed such that the optical system transformation matrix is rank deficient for a particular set of object ranges. In this way, linear functions can be found to annihilate given sampled image data at a plurality of ranges, independent of the intensity of the light received from the object. A statistical detector is used to determine the closest associated range to the actual range of the point within the scene.
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Article Entitled "Conoscopic Holography. T. Basic Principles and Physical Basis" By G. Y. Sirat, J. OPT. SOC. AM.A/vol. 9, No. 1, Jan. 1992, pp. 70-83.
Cathey, Jr. Wade T.
Dowski, Jr. Edward R.
Bales Jennifer L.
Buczinski Stephen C.
Hancook Earl C.
Sirr Francis A.
The Regents of the University of Colorado
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