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Proceedings Paper

A combined 3D and hyperspectral method for surface imaging of wounds
Author(s): Lukasz A. Paluchowski; Martin Denstedt; Thomas Røren; Brita Pukstad; Lise Lyngsnes Randeberg
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Paper Abstract

Information about the size and depth of a wound and how it is developing is an important prognostic tool in wound diagnostics. In this study a two-camera vision system has been developed to collect optical properties, shape and volume of chronic skin ulcers as tool for diagnostic assistance. This system combines the functionality of 2D imaging spectroscopy and 3D stereo-photogrammetry. A high resolution hyperspectral camera and a monochromatic video frame camera were mounted on the same scanning system. Stereo images were acquired to obtain information about the wound surface geometry. A Digital Surface Model (DSM) of the wound surface was reconstructed by applying stereophotogrammetric methods. The hyperspectral image was co-registered to the monochromatic frame image and the wound border was extracted by applying spectroscopic analysis (e.g. tissue oxygenation, pigmentation, classification). The resulting DSM of the undamaged surroundings of the wound was used to reconstruct the top surface above the wound and thus the wound volume. The analyses can, if desired, be limited to a certain depth of interest like the wound bed or wound border. Simultaneous analysis of the hyperspectral data and the surface model gives a promising, new, non-invasive tool for characterization of chronic wounds. Future work will concentrate on implementation of real time analysis and improvement of the accuracy of the system.

Paper Details

Date Published: 25 March 2013
PDF: 10 pages
Proc. SPIE 8578, Optical Tomography and Spectroscopy of Tissue X, 85780T (25 March 2013); doi: 10.1117/12.2001248
Show Author Affiliations
Lukasz A. Paluchowski, Norwegian Univ. of Science and Technology (Norway)
Martin Denstedt, Norwegian Univ. of Science and Technology (Norway)
Thomas Røren, Norwegian Univ. of Science and Technology (Norway)
Brita Pukstad, Norwegian Univ. of Science and Technology (Norway)
Univ. Hospital of Trondheim (Norway)
Lise Lyngsnes Randeberg, Norwegian Univ. of Science and Technology (Norway)

Published in SPIE Proceedings Vol. 8578:
Optical Tomography and Spectroscopy of Tissue X
Bruce J. Tromberg; Arjun G. Yodh; Eva Marie Sevick-Muraca, Editor(s)

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