A variant approach for human forensic identification using dental radiographs with skeleton and contour
by Vijayakumari Pushparaj; Banumathi Arumugam; Ulaganathan Gurunathan
International Journal of Signal and Imaging Systems Engineering (IJSISE), Vol. 8, No. 1/2, 2015

Abstract: Forensic odontology is a branch under biometrics in which victim identification is performed with dental radiographs. It is made by matching ante-mortem and post-mortem dental records. In this paper, a skeleton-based shape matching algorithm for dental bitewing and periapical radiographic images is proposed. To improve the illumination evenness of the dental radiographs, a combination of Butterworth and homomorphic filters is used in the pre-processing stage. Spline function is used for teeth isolation. Missing tooth in dental radiographs is obtained by using bifurcation technique. An active contour model with Selective Binary and Gaussian Filtering Regularised level set method is used for contour extraction. Shape is also extracted by using skeleton. Finally, shape matching is achieved by both contour-based and skeleton-based approaches. The experimental results are obtained on a database of 100 ante-mortem and 50 post-mortem images. This algorithm provides a hit rate of 0.77 for both the contour and the skeleton approaches. The retrieval rate is comparatively better for contour than skeleton for other rankings.

Online publication date: Sun, 25-Jan-2015

The full text of this article is only available to individual subscribers or to users at subscribing institutions.

 
Existing subscribers:
Go to Inderscience Online Journals to access the Full Text of this article.

Pay per view:
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.

Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Signal and Imaging Systems Engineering (IJSISE):
Login with your Inderscience username and password:

Username:        Password:          Forgotten your password?

Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.

If you still need assistance, please email subs@inderscience.com