Journal Article

An evaluation of active shape models for the automatic identification of cephalometric landmarks

TJ Hutton, S Cunningham and P Hammond

in The European Journal of Orthodontics

Published on behalf of European Orthodontics Society

Volume 22, issue 5, pages 499-508
Published in print October 2000 | ISSN: 0141-5387
Published online October 2000 | e-ISSN: 1460-2210 | DOI: http://dx.doi.org/10.1093/ejo/22.5.499
An evaluation of active shape models for the automatic identification of cephalometric landmarks

More Like This

Show all results sharing this subject:

  • Restorative Dentistry and Orthodontics

GO

Show Summary Details

Preview

This paper describes an evaluation of the application of active shape models to cephalometric landmarking. Permissible deformations of a template were established from a training set of hand-annotated images and the resulting model was used to fit to unseen images. An evaluation of this technique in comparison to the accuracy achieved by previous methods is presented.

Sixty-three randomly selected cephalograms were tested using a drop-one-out method. On average, 13 per cent of 16 landmarks were within 1 mm, 35 per cent within 2 mm, and 74 per cent within 5 mm. It was concluded that the current implementation does not give sufficient accuracy for completely automated landmarking, but could be used as a time-saving tool to provide a first-estimate location of the landmarks. The method is also of interest because it provides a framework for a range of future improvements.

Journal Article.  0 words. 

Subjects: Restorative Dentistry and Orthodontics

Full text: subscription required

How to subscribe Recommend to my Librarian

Users without a subscription are not able to see the full content. Please, subscribe or login to access all content.