Range estimation apparatus and method

Details Range estimation apparatus and method Range estimation apparatus and method

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.

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