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An automatic approach for classification and categorisation of lip morphological traits


Autoři: Hawraa H. Abbas aff001;  Yulia Hicks aff002;  Alexei Zhurov aff004;  David Marshall aff003;  Peter Claes aff005;  Caryl Wilson-Nagrani aff004;  Stephen Richmond aff004
Působiště autorů: School of Engineering, Kerbala University, Kerbala, Iraq aff001;  School of Engineering, Cardiff University, Cardiff, Wales, United Kingdom aff002;  School of Computer Science and Informatics, Cardiff University, Cardiff, Wales, United Kingdom aff003;  School of Dentistry, Cardiff University, Cardiff, Wales, United Kingdom aff004;  Medical Imaging Research Center, University of Leuven, Leuven, Belgium aff005
Vyšlo v časopise: PLoS ONE 14(10)
Kategorie: Research Article
prolekare.web.journal.doi_sk: https://doi.org/10.1371/journal.pone.0221197

Souhrn

Classification of facial traits (e.g., lip shape) is an important area of medical research, for example, in determining associations between lip traits and genetic variants which may lead to a cleft lip. In clinical situations, classification of facial traits is usually performed subjectively directly on the individual or recorded later from a three-dimensional image, which is time consuming and prone to operator errors. The present study proposes, for the first time, an automatic approach for the classification and categorisation of lip area traits. Our approach uses novel three-dimensional geometric features based on surface curvatures measured along geodesic paths between anthropometric landmarks. Different combinations of geodesic features are analysed and compared. The effect of automatically identified categories on the face is visualised using a partial least squares method. The method was applied to the classification and categorisation of six lip shape traits (philtrum, Cupid’s bow, lip contours, lip-chin, and lower lip tone) in a large sample of 4747 faces of normal British Western European descents. The proposed method demonstrates correct automatic classification rate of up to 90%.

Klíčová slova:

Algorithms – Analysis of variance – Face recognition – Face – Anthropometry – Lips – Geodesics – Curvature


Zdroje

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