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Teeth recognition based on multiple attempts in mobile device
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DOI：10.1016/j.jnca.2009.12.016.png)
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Most traditional biometric approaches generally utilize a single image for personal identification. However, these approaches sometimes failed to recognize users in practical environment due to false-detected or undetected subject. Therefore, this paper proposes a novel recognition approach based on multiple frame images that are implemented in mobile devices. The aim of this paper is to improve the recognition accuracy and to reduce computational complexity through multiple attempts. Here, multiple attempts denote that multiple frame images are used in time of recognition procedure. Among sequential frame images, an adequate subject, i.e., teeth image, is chosen by subject selection module which is operated based on differential image entropy. The selected subject is then utilized as a biometric trait of traditional recognition algorithms including PCA, LDA, and EHMM. The performance evaluation of proposed method is performed using two teeth databases constructed by a mobile device. Through experimental results, we confirm that the proposed method exhibits improved recognition accuracy of about 3.6-4.8%, and offers the advantage of lower computational complexity than traditional biometric approaches. (C) 2010 Elsevier Ltd. All rights reserved.
Keyword:
Teeth recognition
Multiple attempts
Subject selection
Mobile device
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