计算机工程2011，Vol.37Issue(10)：14-15,2.DOI:10.3969/j.issn.1000-3428.2011.10.004
基于黄金分割率的指纹图像方向滤波模板
Directional Filter Mask for Fingerprint Image Based on Golden Segmentation Ratio
摘要
Abstract
A Directional Filter Bank(DFB) containing eight directional filter masks is proposed.The filter coefficients which probably go beyond the range of the horizontally oriented mask are assigned zero value, a section of Fibonacci sequence based on the golden segmentation ratio is chosen as the other mask coefficients according to the rule of gradually decrease by the center to peripheral.The other seven masks are rotated from the horizontally oriented mask.The especial structure can ensure the consistency of all the filter masks' structure.This DFB not only solves the overflow problem of filter masks, but also ensures the coefficients on the rotated masks distribute more regularly.The performance of this DFB is evaluated with some typical low quality images of FVC database.Experimental results show that the proposed DFB has dramatic effect to low quality fingerprint images, it can connect the broken fingerprint and enhance the ridges more efficiently.关键词
指纹增强/方向滤波/黄金分割率/滤波模板Key words
fingerprint enhancement/ directional filter/ golden segmentation ratio/ filter mask分类
信息技术与安全科学引用本文复制引用
蔡秀梅,范九伦..基于黄金分割率的指纹图像方向滤波模板[J].计算机工程,2011,37(10):14-15,2.基金项目
国家自然科学基金资助项目(60572133) （60572133）
陕西省自然科学基金资助项目(2007F18) （2007F18）
西安邮电学院中青年科研重点基金资助项目(ZL2009-2) （ZL2009-2）
