光学学报, 2000, 20 (3): 370, 网络出版: 2006-08-09
多通道体全息子波相关器及其在指纹识别中的应用
Multichannel Wavelet Correlators for Fingerprint Identification by the Use of Volume Holographic Storage
体全息存储 子波变换 多通道相关 指纹识别 volume holographic storage wavelet transform multichannel correlation fingerprint identification.
摘要
基于子波匹配相关理论和光折变晶体的体全息关联存储特性,采用球面波作参考光,构建了一个新型的多通道体全息子波相关器。该系统具有多通道并行相关特性和更高的识别准确率,并且较通常的平面参考光波体全息相关器更为紧凑,易于小型化和实用化。初步研究了其在指纹识别中的应用,给出了实验结果。
Abstract
Based on the theory of wavelet correlation and the associative characteristic of volume holographic storage in a photorefractive crystal, a novel multichannel wavelet correlator is constructed. It has characteristics of multichannel correlation processing and a higher recognition veracity. With the spherical reference beam, the system is more compact and easy to be miniaturized and utilized. Its application in fingerprint identification is studied, and experimental results are given.
冯文毅, 黄高贵, 严瑛白, 金国藩, 邬敏贤. 多通道体全息子波相关器及其在指纹识别中的应用[J]. 光学学报, 2000, 20(3): 370. 冯文毅, 黄高贵, 严瑛白, 金国藩, 邬敏贤. Multichannel Wavelet Correlators for Fingerprint Identification by the Use of Volume Holographic Storage[J]. Acta Optica Sinica, 2000, 20(3): 370.
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