Three-dimensional maps of human skin properties on full face with shadows using 3-D hyperspectral imaging
Autor: | Pierre Seroul, Cyprien Adnet, Raphael Clerc, Alain Trémeau, Jean-Luc Perrot, Mathieu Hébert, Lou Gevaux |
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Rok vydání: | 2018 |
Předmět: |
Paper
Scanner Computer science hyperspectral imaging Computation Biomedical Engineering Irradiance Radiometric correction 01 natural sciences Imaging 010309 optics Biomaterials Imaging Three-Dimensional 0103 physical sciences Image Processing Computer-Assisted Humans Computer vision Invariant (mathematics) Skin business.industry Spectrum Analysis full face Optical Imaging Hyperspectral imaging Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials in vivo analysis Homogeneous Face skin chromophore Acquisition time Artificial intelligence business three-dimensional scanning |
Zdroj: | Journal of Biomedical Optics |
ISSN: | 1560-2281 |
Popis: | Hyperspectral imaging has shown great potential for optical skin analysis by providing noninvasive, pixel-by-pixel surface measurements from which, applying an optical model, information such as melanin concentration and total blood volume fraction can be mapped. Such applications have been successfully performed on small flat skin areas, but existing methods are not suited to large areas such as an organ or a face, due to the difficulty of ensuring homogeneous illumination on complex three-dimensional (3-D) objects, which leads to errors in the maps. We investigate two methods to account for these irradiance variations on a face. The first one relies on a radiometric correction of the irradiance, using 3-D information on the face’s shape acquired by combining the hyperspectral camera with a 3-D scanner; the second relies on an optimization metric used in the map computation, which is invariant to irradiance. We discuss the advantages and drawbacks of the two methods, after having presented in detail the whole acquisition setup, which has been designed to provide high-resolution images with a short acquisition time, as required for live surface measurements of complex 3-D objects such as the face. |
Databáze: | OpenAIRE |
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