19 February 2013 Near real-time skin deformation mapping
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A novel in vivo approach is described that provides large area mapping of the mechanical properties of the skin in human patients. Such information is important in the understanding of skin health, cosmetic surgery[1], aging, and impacts of sun exposure. Currently, several methods have been developed to estimate the local biomechanical properties of the skin, including the use of a physical biopsy of local areas of the skin (in vitro methods) [2, 3, and 4], and also the use of non-invasive methods (in vivo) [5, 6, and 7]. All such methods examine localized areas of the skin. Our approach examines the local elastic properties via the generation of field displacement maps of the skin created using time-sequence imaging [9] with 2D digital imaging correlation (DIC) [10]. In this approach, large areas of the skin are reviewed rapidly, and skin displacement maps are generated showing the contour maps of skin deformation. These maps are then used to precisely register skin images for purposes of diagnostic comparison. This paper reports on our mapping and registration approach, and demonstrates its ability to accurately measure the skin deformation through a described nulling interpolation process. The result of local translational DIC alignment is compared using this interpolation process. The effectiveness of the approach is reported in terms of residual RMS, image entropy measures, and differential segmented regional errors.
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Steve Kacenjar, Steve Kacenjar, Suzie Chen, Suzie Chen, Madiha Jafri, Madiha Jafri, Brian Wall, Brian Wall, Richard Pedersen, Richard Pedersen, Richard Bezozo, Richard Bezozo, } "Near real-time skin deformation mapping", Proc. SPIE 8655, Image Processing: Algorithms and Systems XI, 86550G (19 February 2013); doi: 10.1117/12.2004462; https://doi.org/10.1117/12.2004462

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