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Proceedings Paper

Analysis of skin recovery from mechanical indentation using diffuse lighting and digital imaging
Author(s): Neil T. Clancy; Martin J. Leahy; Gert E. Nilsson; Chris Anderson
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Paper Abstract

Skin behaves as a viscoelastic material, having mechanical properties composed of elastic and fluid components. Upon indentation, the fibres are stretched and fluid displaced from the compressed region. The rate of recovery from this imprint is therefore dependent on the hydration and elasticity of the skin. A reliable measurement could be applied to the assessment of clinical conditions such as oedema, rare genetic disorders such as cutis laxa and the evaluation of the 'effective age' of skin in vivo. This paper describes a new approach to the non-invasive indentation technique and a novel method of analysis. A method is proposed that tracks the skin's recovery optically from an initial strain made using a mechanical indentor, diffuse side-lighting and a CCD video-capture device. Using the blue colour plane of the image it is possible to examine the surface topography only, and track the decay of the imprint over time. Two algorithms are discussed for the extraction of information on the skin's displacement and are analysed in terms of reliability and reproducibility.

Paper Details

Date Published: 12 July 2007
PDF: 10 pages
Proc. SPIE 6629, Diffuse Optical Imaging of Tissue, 66291G (12 July 2007); doi: 10.1117/12.728419
Show Author Affiliations
Neil T. Clancy, Univ. of Limerick (Ireland)
Martin J. Leahy, Univ. of Limerick (Ireland)
Gert E. Nilsson, Linköpings Univ. (Sweden)
Chris Anderson, Linköpings Univ. (Sweden)

Published in SPIE Proceedings Vol. 6629:
Diffuse Optical Imaging of Tissue
Brian W. Pogue; Rinaldo Cubeddu, Editor(s)

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