一种改进的基于Gabor滤波的指纹增强算法  

An Improved Fingerprint Enhancement Algorithm Based on Gabor Filter

作　　者：蒙丽彬[1] 赵进创[1] 傅文利[1] 

机构地区：[1]南宁市广西大学计算机与电子信息学院,530004

出　　处：《微计算机信息》2006年第11X期297-299,共3页Control & Automation

基　　金：广西自然科学基金项目(桂科自0135059);广西科技攻关项目(桂科攻0322012-5)

摘　　要：研究并实现了基于Gabor滤波器的指纹增强算法,对纹线方向提取算法进行了改进,获得了较准确的方向图。并改进了纹线频率的提取方法,有效地避免了Gabor滤波后在脊线中留下伪纹线和小孔的问题。同时也对滤波算法进行了优化,有效地减少了运算量。实验证明,该方法工作稳定,效果良好,鲁棒性强,对低质量图像具有显著的增强效果。A fingerprint enhancement algorithm based on Gabor filter and its application is developed in this paper, and a method for ridge orientation acquirement is improved, and the orientation map is more accurate. A method for ridge frequency acquirement is improved, and the false ridge lines and wounds after Gabor filter are avoided. And the enhancement algorithm is optimized. From the experimental results, we prove that this algorithm is steady, effective and robust, and the algorithm has remarkable results for lowquality fingerprint.

关 键 词：指纹 GABOR滤波 指纹增强 纹线方向 纹线频率 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]