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Proceedings Paper

Diagnosing concrete structures using innovative merged thermal with visible images
Author(s): Daisuke Sato; Tatsuhito Komiyama; Osami Kudo; Takahiro Nagano
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Paper Abstract

Diagnosing the reinforced concrete structures by using infrared thermography has become considerable in Japan. Infrared thermography has potential for detecting the defects, but is challenging due to unwanted thermal signals caused by surface roughness dirt, etc. To prevent from misdiagnosing, an innovative concept of merged thermal with visible images is proposed. Several key issues exist to capture the merged images: (1) alignment for the optical axes of an infra-red camera and digital still camera, (2) parallax correction between the thermal and visible images, (3) aberration correction for the lenses, and (4) adjustment of the image view angles. An experimental setup demonstrates an efficient diagnosing using the merged images.

Paper Details

Date Published: 6 December 2004
PDF: 7 pages
Proc. SPIE 5612, Electro-Optical and Infrared Systems: Technology and Applications, (6 December 2004); doi: 10.1117/12.577981
Show Author Affiliations
Daisuke Sato, Constec Engineering Co. (Japan)
Tatsuhito Komiyama, Constec Engineering Co. (Japan)
Osami Kudo, Constec Engineering Co. (Japan)
Takahiro Nagano, Constec Engineering Co. (Japan)


Published in SPIE Proceedings Vol. 5612:
Electro-Optical and Infrared Systems: Technology and Applications
Ronald G. Driggers; David A. Huckridge, Editor(s)

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