计算机科学 ›› 2016, Vol. 43 ›› Issue (Z6): 149-151.doi: 10.11896/j.issn.1002-137X.2016.6A.035
梅园,赵波,朱之丹
MEI Yuan, ZHAO Bo and ZHU Zhi-dan
摘要： 指纹图像增强对提高自动指纹识别系统的准确性具有重要意义。针对直线Gabor滤波器在纹线弯曲程度高的区域增强效果较差和曲线Gabor滤波器增强计算复杂度较高的问题,提出了一种基于直线曲线混合Gabor滤波器的指纹增强算法。其主要过程为:基于方向场一致性特征将指纹图像划分为弯曲区域和平缓区域；对弯曲区域和平缓区域,分别采用曲线Gabor滤波器和直线Gabor滤波器进行增强。在FVC2002上的实验结果表明,该方法在取得与曲线Gabor滤波器近似增强效果的同时,增强速度提高至其1.404倍。
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