| 冷璐,刘刚,黎明.可撤销手掌纹脉二维PalmHash码的共轭认证[J].光电子激光,2014,(9):1791~1795 |
| 可撤销手掌纹脉二维PalmHash码的共轭认证 |
| Conjugate verification of cancelable palm-print-vein using 2D-PalmHash code |
| 投稿时间：2014-01-06 |
| DOI： |
| 中文关键词: 共轭认证 手掌纹脉 二维PalmHash码(2DPHC) 可撤销生物特征 方向选择 小协方 差准则 |
| 英文关键词:conjugate verification palm-print-vein 2D PalmHash code (2D-PHC) cancelabl e biometric orientation selection small covariance rule |
| 基金项目:国家自然科学基金(61305010,9,61202112,9)、中国博士后科学基金(2013M531554)和南昌航空大学博士启动基金(EA201308058)资助项目 (南昌航空大学 无损检测技术教育部重点实验室,江西 南昌 330063) |
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| 中文摘要: |
| 由于认证性、实用性和防伪性方面的多重优势,迫 切需要开发融合掌纹和掌脉的双模态认证技术。作为新型的可撤销掌纹认证编码,二维Palm Hash码(2DPHC)克服了直接使用原始掌纹特征的安全隐患和隐私问题。 本文将2DPHC框架推广至可撤销掌脉,通过融合掌纹和掌脉的2DPHC,实现可撤销手掌 纹脉认证。为了不增加双模态认证中的计算复杂度和模板数据量,对掌纹和掌脉的模板生成 方向进行优 选。在每种模态中,分别生成4个方向的2DPHC,并统计匹配分数协方差。根据小协方差选择 策略, 分别从掌纹和掌脉中选择低相关性的2个2DPHC作为可撤销共轭模板。通过均值策略融合多个 模 板的匹配分数,实现可撤销共轭认证。与认证性能排序选择策略相比,小协方差策略指导的 方向选择可以更有效降低融合分数的方差,获得更高的共轭认证性能。 |
| 英文摘要: |
| It is imperative to develop bimodal ve rification fusing palmprint and palmvein,which has high verification accuracy,go od practicability and strong anti-spoof ability.2D-PalmHash code (2DPHC),as a novel cancelable palmprint verification coding scheme,overcomes the secure vulnerabil ities and privacy problems of direct usage of original palmprint features.The framework of 2DPHC can be gener alized to cancelable palmvein. Cancelable palm-print-vein verification can be achieved by fusing 2DPHCs of pa lmprint and palmvein. In order to prevent the increase of computational cost and template data size in bimodal ver ification,it is necessary to effectively select the orientations,along which the palmprint and palmvein temp lates are generated. In each model biometric,2DPHCs are generated along four orientations,and the covariances betwe en the matching scores of the four 2DPHCs are calculated. According to “small covariance” selection rule,tw o 2DPHCs with minimum covariance are respectively selected from palmprint and palmvein as cancelable c onjugate templates.The matching scores of the templates are fused with mean rule for cancelable conjugate verifi cation.Compared with the rule of “verification accuracy sequencing”,the “small covariance” rule for orientati on selection can suppress the variance of the fused matching score more effectively,and accordingly achieve higher conjug ate verification accuracy. |
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