Method and apparatus for determining surface displacement...

Details Method and apparatus for determining surface displacement... Method and apparatus for determining surface displacement...

2005-10-11

2008-11-11

Chowdhury, Tarifur R (Department: 2886)

Optics: measuring and testing

Position or displacement

Position transverse to viewing axis

Reexamination Certificate

active

07450250

ABSTRACT:
An imaging system and method are provided that use imaging information relating to positions of one or more retroreflectors attached to one or more surfaces of an object of interest to determine the shape and/or displacement of the surface or surfaces on which the retroreflector or retroreflectors are located. A variety of types of information may then be ascertained based on the determination as to the shape and/or displacement of the surface of the object, such as the value of some physiological parameter of a patient, internal and external pressure of an object, acoustical vibrations sensed by a microphone, positions of fingertips on a keyboard, etc.

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patent: 6055080 (2000-04-01), Furstenau et al.
patent: 6621889 (2003-09-01), Mostafavi
patent: 7205521 (2007-04-01), Gruhlke et al.

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