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Proceedings Paper

Endoscopic inspection using a panoramic annular lens
Author(s): Donald R. Matthys; John A. Gilbert; Joseph T. Puliparambil
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Paper Abstract

Endoscopy is a technique for imaging the inner part of a volume or cavity. Such techniques have applications in many areas, such as medicine, civil engineering, and aerospace; indeed, anywhere tubes and pipes are involved. The present paper discusses a method of endoscopy which utilizes a unique panoramic annular lens to obtain a flat two-dimensional annular image of the 360 degree surround of the optical system. Although the distortions involved in the optical mapping to produce such an image are not very severe, and the images can be interpreted by inspection, computer algorithms are introduced to linearize the images so as to simplify their interpretation.

Paper Details

Date Published: 1 December 1991
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Proc. SPIE 1554, Second International Conference on Photomechanics and Speckle Metrology, (1 December 1991); doi: 10.1117/12.57466
Show Author Affiliations
Donald R. Matthys, Marquette Univ. (United States)
John A. Gilbert, Univ. of Alabama in Huntsville (United States)
Joseph T. Puliparambil, Marquette Univ. (United States)


Published in SPIE Proceedings Vol. 1554:
Second International Conference on Photomechanics and Speckle Metrology
Fu-Pen Chiang; Fu-Pen Chiang, Editor(s)

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