基于改进的Gabor滤波指纹图像增强算法研究

Research on Fingerprint Image Enhancement Algorithm Based on Improved Gabor Filter

对Gabor滤波器进行改进,改进的算法利用了指纹图像的局部特性,结合局部四邻域的关联特性,并且采用固定频率来代替复杂的频率计算。实验结果证明,改进的Ga-bor滤波算法不仅增强了指纹图像信息,同时也提高了处理速度。

Improves the Gabor filter, the improved algorithm uses partial characteristic associate with it＇s four neighbors＇ partial connection characteristic of fingerprint image and also uses fixed frequency te replace complex frequency computation. Experiment indicates that the im- proved Gabor filter algorithm not only strengthens the fingerprint image information, but also accelerates the processing speed.