基于皮肤毛囊光学相干层析（OCT）成像的三维断层生物特征识别新方法

随着互联网和信息技术的快速发展，人们对信息安全、个体识别和个体特征推断的要求日益提高，基于个人独特生理、行为特征的生物特征识别技术受到广泛重视和研究。然而，目前大多数生物特征识别技术还局限于一维或二维识别，识别率容易受环境、伪造等因素影响，三维生物特征识别技术鲁棒性更好，信息更丰富，伪造难度更大，是一种更准确可靠的技术。本项目以人体皮肤毛囊这一新型生物特征为研究对象，通过研制一套新型三维光学相干层析(OCT)成像系统，突破目前大多三维生物特征识别技术只能进行三维轮廓成像的瓶颈，实现对人体皮肤毛囊的三维、高分辨、宽视场、大成像深度的断层成像和光谱成像，并自动提取和测量毛囊分布形态、光谱等特征参数，建立小型体皮肤毛囊图像特征数据库，进行特征匹配测试和群体特征规律研究。本项目旨在通过新型三维OCT成像技术，初步建立一种针对人体皮肤毛囊的三维断层生物特征识别新方法，提高生物特征识别的效果和水平。

With the rapid development of Internet and information technology, information security becomes an important issue. There is an increasing demand for human identification and feature inference, especially based on the individual's unique physiological or behavioral attributes, so called biometric technology, which gains widespread attention and becomes a hot research topic. However, as most of biometric technology is limited to a one-dimensional or two-dimensional recognition, the recognition rate is vulnerable to the external environment, forgery and other factors. The three-dimensional cross-sectional biometric technology is a more accurate and reliable techniques with more information and less susceptible to counterfeiting. In this proposal, we focus on a new biometric feature---the hair follicles, via a novel three-dimensional optical coherence tomography (OCT) imaging system, which enables three-dimensional, cross-sectional, high-resolution, wide field of view, large depth imaging. The introduction of OCT technology breaks through the bottleneck that most of current three-dimensional biometric are only based on the analysis of three-dimensional contour imaging. The OCT system is also expected to realize automatic extraction and measurement of follicle features, such as density, shape, distribution and spectral characteristic. A human hair follicle feature database will be established and analysed to perform the feature matching tests and group feature studies. This proposal aims to develop a novel three-dimensional cross-sectional biometric technology for a new biometric feature---human hair follicles with a novel three-dimensional OCT system, and improve the effectiveness of biometric technology eventually.