NDLI: Multimodal registration of high-resolution thermal image mosaics for the non-destructive evaluation of structures

Content Provider	IEEE Xplore Digital Library
Author	Hess, M. Kuester, F. Trivedi, M.
Copyright Year	2014
Description	Author affiliation: Struct. Eng., Univ. of California, San Diego, La Jolla, CA, USA (Hess, M.; Kuester, F.) \|\| Electr. & Comput. Eng., Univ. of California, San Diego, La Jolla, CA, USA (Trivedi, M.)
Abstract	This paper proposes an approach to automatically register thermal images to visible images by utilizing known relative camera positions. There are multiple areas of application for the fusion of visible and thermal images, but previous approaches require feature detection and matching in both visible and infrared ranges in order to register the two imaging modalities. In the application domain of structural diagnostics, it is not guaranteed that corresponding features will be present in the thermal images. The diagnostic imaging is being performed on building-scale targets which is another characteristic of this application that separates itself from prior thermal-visible registration studies. Non-destructive evaluation of structures could require the inspection of entire building facades which necessitates many thermal images to yield a desirable level of resolution and detail. The acquisition of high-resolution thermal image mosaics generates the level of detail required and provides context for the entire target structure. A low-cost camera mount was custom designed and 3D printed in order to mount visible web cameras around a thermal camera. Once the system is calibrated with a pair of multimodal images that contain corresponding features, every subsequent pair of images can be automatically registered. An application for this approach is presented in which the generation of a visible image mosaic in turn automatically generates a registered thermal image mosaic. The benefit of this approach is that there is no reliance on features being present in the thermal images in order to register them to the visible images.
Starting Page	216
Ending Page	221
File Size	8293098
Page Count	6
File Format	PDF
ISBN	9781479952205
DOI	10.1109/IST.2014.6958476
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-10-14
Publisher Place	Greece
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Cameras Calibration Mutual information Feature extraction Registers Buildings
Content Type	Text
Resource Type	Article

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3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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