Anti-Spoof Reliable Biometry of Fingerprints Using <i>En-Face</i>Optical Coherence Tomography

• 作者: Adrian Bradu Adrian Gh. Podoleanu Alexander Meadway Ali Hojjatoleslami Mohammad-Reza Nasiri-Avanaki Rohollah Mazrae Khoshki
• 来源期刊: 光学与光子学期刊(英文)
• 学科: 医学
• 关键词: Optical Coherence Tomography En-Face OCT FINGERPRINTS BIOMETRY High Resolution
• 年，卷（期）: 2011,（3）
• 页码范围: 91-96
• 页数: 6页
• 分类号: R73

摘要

Optical coherence tomography (OCT) is a relatively new imaging technology which can produce high resolution images of three-dimensional structures. OCT has been mainly used for medical applications such as for ophthalmology and dermatology. In this study we demonstrate its capability in providing much more reliable biometry identification of fingerprints than conventional methods. We prove that OCT can serve secure control of genuine fingerprints as it can detect if extra layers are placed above the finger. This can prevent with a high probability, intruders to a secure area trying to foul standard systems based on imaging the finger surface. En-Face OCT method is employed and recommended for its capability of providing not only the axial succession of layers in depth, but the en-face image that allows the traditional pattern identification. Another reason for using such OCT technology is that it is compatible with dynamic focus and therefore can provide enhanced transversal resolution and sensitivity. Two En-Face OCT systems are used to evaluate the need for high resolution and conclusions are drawn in terms of the most potential commercial route to ex- ploitation.