A Dental Radiograph Registration Algorithm Using Phase-Based Image Matching for Human Identification

Akira Nikaido, Koichi Ito, T. Aoki, Eiko Kosuge, R. Kawamata
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引用次数: 7

Abstract

Dental records are often used to identify victims of massive disasters, where the conventional biometric features, e.g., face, fingerprint, iris, etc., are not available. Human identification using dental records is to match an unidentified individual's postmortem radiographs against a set of identified antemortem radiographs. This paper presents an efficient dental radiograph registration algorithm using phase-based image matching for human identification. The use of phase components in 2D (two-dimensional) discrete Fourier transforms of dental radiograph images makes possible to achieve highly robust image registration and recognition. Experimental evaluation using a small database of dental radiographs indicates that the proposed algorithm exhibits efficient recognition performance for low-quality images
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基于相位图像匹配的口腔x线片配准算法
牙科记录经常被用来识别大规模灾难中的受害者,而传统的生物特征,如面部、指纹、虹膜等,是不可用的。利用牙科记录进行人类身份识别是将一个身份不明的人的死后x光片与一组身份确定的死前x光片进行比对。提出了一种基于相位匹配的口腔x线片配准算法。在牙科x光片图像的二维(二维)离散傅里叶变换中使用相位分量可以实现高度鲁棒的图像配准和识别。实验结果表明,该算法对低质量图像具有良好的识别性能
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