title: The analysis of profiles using curvature analysis.
abstract: The difficulties of localizing landmarks using standardized lateral skull radiographs has been acknowledged. A method is described for producing an objective way of identifying landmarks on the facial profile leading to a useful segmentation and quantitative description of the contours and features of the face. The method uses scale space filtering techniques and curvature analysis, first employed in pattern recognition. The method has been used on two groups: a random sample of twelve-year-old females and a sample of 10 patients with a normal facial morphology who had cephalometric X-rays taken at 5, 9, 13, 16, and 20 years. It demonstrated that the shape of each of the curves is similar in the first group except in the mouth region. The growth study produced meaningful data on the growth of the face.
authors: Department of Orthodontics, University College London.
authors: J P
authors: JP
authors: Moss
authors: J C
authors: JC
authors: Campos
authors: A D
authors: AD
authors: Linney
mesh_terms: D000293:Adolescent; D000328:Adult; D000703:Analog-Digital Conversion; D002508:Cephalometry / Q000379:methods*; D002648:Child; D002675:Child, Preschool; D005145:Face / Q000033:anatomy & histology*; D005260:Female; D006801:Humans; D008445:Maxillofacial Development; D015203:Reproducibility of Results