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Optical Engineering

Endoscopic measurement using radial metrology with digital correlation
Author(s): Donald R. Matthys; John A. Gilbert; Pal Greguss
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Paper Abstract

Radial metrology combines standard optical measurement techniques with a unique panoramic annular lens (PAL) system to study material properties and deformations on the inner surfaces of the cavities found, for example, inside pipes, tubes, and boreholes. A PAL profilometer using speckle metrology is analyzed and the equations obtained from the analysis are used to calibrate the PAL profilometer when it is used to profile the inner surface of a cylindrical pipe and to measure the deformation of the pipe when it is subjected to diametral compression.

Paper Details

Date Published: 1 October 1991
PDF: 6 pages
Opt. Eng. 30(10) doi: 10.1117/12.55965
Published in: Optical Engineering Volume 30, Issue 10
Show Author Affiliations
Donald R. Matthys, Marquette Univ. (United States)
John A. Gilbert, Univ. of Alabama in Huntsville (United States)
Pal Greguss, Frederic Joliot-Curie National Research (Hungary)

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