Personal Identification by the Comparison of Facial Profiles: Testing the Reliability of a High‐Resolution 3D–2D Comparison Model
Abstract: Identification from video surveillance systems is frequently requested in forensic practice. The “3D–2D” comparison has proven to be reliable in assessing identification but still requires standardization; this study concerns the validation of
the 3D–2D profile comparison. The 3D models of the faces of five individuals were compared with photographs from the same subjects as well as from another 45 individuals. The difference in area and distance between maxima (glabella, tip of nose, fore point of upper and lower lips, pogonion)
and minima points (selion, subnasale, stomion, suprapogonion) were measured. The highest difference in area between the 3D model and the 2D image was between 43 and 133 mm2 in the five matches, always greater than 157 mm2 in mismatches; the mean distance between
the points was greater than 1.96 mm in mismatches, <1.9 mm in five matches (p < 0.05). These results indicate that this difference in areas may point toward a manner of distinguishing “correct” from “incorrect” matches.
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Document Type: Research Article
LABANOF, Laboratorio di Antropologia e Odontologia Forense, DMU—Dipartimento di Morfologia e Scienze Biomediche, Sezione di Medicina Legale, Università degli Studi di Milano, Milan, Italy.
Sezione di Misure e Tecniche Sperimentali, Dipartimento di Meccanica, Politecnico di Milano, Milan, Italy.
Publication date: January 1, 2012