摘要
在指纹预处理过程中,指纹的方向信息和纹线的频率信息是十分重要的内容。针对指纹图像所具有的脊线特征,提出了一种基于Gabor滤波器的指纹图像增强方法。首先通过快速傅立叶变换将指纹图像变换到频域,然后在频域分方向进行Gabor滤波。通过实验结果表明,该方法具有较强的有效性和鲁棒性。
In fingerprint preprocessing, the direction information and the frequency information are very important content. For the range line information of the fingerprint image, this paper proposed a fingerprint image enhancement based on Gabor filter. Firstly, transform the fingerprint image to the frequency domain by FFT, then carry on Gabor filtering in different directions. Through the experimental results, it is showed that the method has more effective and robust.
