05832139 is referenced by 49 patents and cites 60 patents.

A method for determining up to six degrees of freedom of a camera relative to a reference frame comprises sensing an optically modulated target with the camera and processing the camera's video output signal with a digital computer. The target may have a single pattern, multiple patterns, or patterns of varying size. Multiple targets may also be used. A very wide field of view camera may be used in conjunction with a method for removing geometric distortion from the camera's view. Target patterns may be transmissive, reflective, or retroreflective, or may actively emit light. Asymmetric patterns are used to eliminate ambiguity in the recovery of the degrees of freedom.

Title
Method and apparatus for determining degrees of freedom of a camera
Application Number
8/688838
Publication Number
5832139
Application Date
July 31, 1996
Publication Date
November 3, 1998
Inventor
Robert H Dunphy
Holland
PA, US
Donald G Chandler
Princeton
NJ, US
Eric P Batterman
Flemington
NJ, US
Agent
Allan Jacobson
Assignee
Omniplanar
NJ, US
IPC
F41G 3/02
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