Yi Yao, Cao Liangcai, Guo Wei, Luo Yaping, Feng Jianjiang, He Qingsheng, Jin Guofan
State Key Laboratory of Precision Measurement Technology and Instruments, Department of Precision Instrument, Tsinghua University, Beijing 100084, China.
Opt Express. 2013 Jul 15;21(14):17108-21. doi: 10.1364/OE.21.017108.
A parallel volume holographic optical fingerprint recognition system robust to fingerprint translation, rotation and nonlinear distortion is proposed. The optical fingerprint recognition measures the similarity by using the optical filters of multiplexed holograms recorded in the holographic media. A fingerprint is encoded into multiple template data pages based on the local minutiae structure coding method after it is adapted for the optical data channel. An improved filter recording time schedule and a post-filtering calibration technology are combined to suppress the calculating error from the large variations in data page filling ratio. Experimental results tested on FVC2002 DB1 and a forensic database comprising 270,216 fingerprints demonstrate the robustness and feasibility of the system.
提出了一种对指纹平移、旋转和非线性畸变具有鲁棒性的并行体全息光学指纹识别系统。光学指纹识别通过使用记录在全息介质中的复用全息图的光学滤波器来测量相似度。指纹在适应光学数据通道后，基于局部细节结构编码方法被编码为多个模板数据页。结合改进的滤波器记录时间表和滤波后校准技术，以抑制数据页填充率大幅变化带来的计算误差。在FVC2002 DB1和一个包含270,216枚指纹的法医数据库上进行的实验结果证明了该系统的鲁棒性和可行性。
