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IEEE Trans Med Imaging. 2009 May;28(5):752-62. doi: 10.1109/TMI.2008.2012025. Epub 2009 Jan 13.

Three-dimensional assessment of skin wounds using a standard digital camera.

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  • 1Department of Signal and Image Processing of the Ecole Polytechnique and the PRISME Institute of the University of Orleans, 45067 Orleans Cedex, France. sylvie.treuillet@univ-orleans.fr

Abstract

In this paper, after an overview of the literature concerning the imaging technologies applied to skin wounds assessment, we present an original approach to build 3-D models of skin wounds from color images. The method can deal with uncalibrated images acquired with a handheld digital camera with free zooming. Compared with the cumbersome imaging systems already proposed, this novel solution uses a low-cost and user-friendly image acquisition device suitable for widespread application in health care centers. However, this method entails the development of a robust image processing chain. An original iterative matching scheme is used to generate a dense estimation of the surface geometry from two widely separated views. The best configuration for taking photographs lies between 15 ( degrees ) and 30 ( degrees ) for the vergency angle. The metric reconstruction of the skin wound is fully automated through self-calibration. From the 3-D model of the skin wound, accurate volumetric measurements are achieved. The accuracy of the inferred 3-D surface is validated by registration to a ground truth and repetitive tests on volume. The global precision around 3% is in accordance with the clinical requirement of 5% for assessing the healing process.

PMID:
19150787
[PubMed - indexed for MEDLINE]
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