Method and system for fast calibration of three-dimensional...

Details Method and system for fast calibration of three-dimensional... Method and system for fast calibration of three-dimensional...

2007-07-06

2008-12-30

Tarcza, Thomas H (Department: 3662)

Optics: measuring and testing

Range or remote distance finding

With photodetection

Reexamination Certificate

active

07471376

ABSTRACT:
Rapid calibration of a TOF system uses a stationary target object and electrically introduces phase shift into the TOF system to emulate target object relocation. Relatively few parameters suffice to model a parameterized mathematical representation of the transfer function between measured phase and Z distance. The phase-vs-distance model is directly evaluated during actual run-time operation of the TOF system. Preferably modeling includes two components: electrical modeling of phase-vs-distance characteristics that depend upon electrical rather than geometric characteristics of the sensing system, and elliptical modeling that phase-vs-distance characteristics that depending upon geometric rather than electrical characteristics of the sensing system.

REFERENCES:
patent: 5082364 (1992-01-01), Russell
patent: 5377219 (1994-12-01), Geiger
patent: 7330034 (2008-02-01), Pelletier et al.

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