15 February 2017 The underlying structure of skin wrinkles: a hyperspectral approach to crows feet
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Skin wrinkles are visually perceived by consumers but they are also known to possess an underlying structure not apparent at the surface of the skin. This underlying structure can be brought out by polarized hyperspectral imaging. Wrinkle patterns of eye crow’s feet are used as example to show a deeper existing pattern and their characterization versus age on a group of volunteers. The skin inhomogeneity changes within each layer of the skin and can be observed in the shorter wavelength region of the spectrum, about 450nm to 500nm which are well suited to image skin surface inhomogeneities within the central and deep epidermis. Imaging in the 550nm range can serve as a larger scale topology reference because of its deeper penetration into the upper dermis. This serves to bring out the underlying wrinkle pattern as imprinted by collagen anisotropies around deep folds but unapparent to the eye yet. The approach has potential applications in evaluating the internal skin patterns non visible to the eye by mapping their spectral dispersion. This method has thus potentials to evaluate the extent of subsurface structures such as acne and other scars and thereby the efficacy of treatments.
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G. Puccetti, G. Puccetti, } "The underlying structure of skin wrinkles: a hyperspectral approach to crows feet", Proc. SPIE 10062, Optical Interactions with Tissue and Cells XXVIII, 1006214 (15 February 2017); doi: 10.1117/12.2250423; https://doi.org/10.1117/12.2250423

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