A method of personal authentication by shape recognition of the lips and front teeth

Masanori Nakakuni, Hiroshi Dozono, Eisuke Ito, Yoshiaki Kasahara, Hideaki Nakakuni

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Abstract

    In this paper we propose a method for carrying out personal authentication by recording a photo of a computer user's face, recognizing the shape of their lips and front teeth, and performing image matching. Using this method, personal authentication is carried out by comparing the previous and current shape of a user's lips and front teeth when they log on to a computer. This method has a number of merits. As teeth are normally hidden behind the user's lips, user authentication is not carried out automatically as is the case with facial recognition. This means that it is possible for the user to decide for themselves whether or not to carry out user authentication. As it is not possible for a user to be recognized simply by their face being recorded on camera, their privacy is protected. Additionally, as the shape of lips and front teeth vary between individuals, there is a high probability that a user can be correctly identified. Furthermore, there is a low probability of significant changes to the shape of adult teeth over a period of months or years unless major dental work is carried out, so this method is potentially suited to personal authentication. Another merit of this method is the fact that it is possible to perform user authentication using an inexpensive webcam. In this paper, we will detail experiments using this method to perform personal authentication as well as the subsequent results.

    Original languageEnglish
    Title of host publicationProceedings of the 11th WSEAS International Conference on Mathematical and Computational Methods in Science and Engineering, MACMESE '09
    Pages203-207
    Number of pages5
    Publication statusPublished - 2009
    Event11th WSEAS International Conference on Mathematical and Computational Methods in Science and Engineering, MACMESE '09 - Baltimore, MD, United States
    Duration: Nov 7 2009Nov 9 2009

    Publication series

    NameProceedings of the 11th WSEAS International Conference on Mathematical and Computational Methods in Science and Engineering, MACMESE '09

    Other

    Other11th WSEAS International Conference on Mathematical and Computational Methods in Science and Engineering, MACMESE '09
    CountryUnited States
    CityBaltimore, MD
    Period11/7/0911/9/09

    All Science Journal Classification (ASJC) codes

    • Computational Theory and Mathematics
    • Applied Mathematics
    • Computational Mathematics

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