摘要
在指纹自动识别系统中,图像增强是比较重要的一个环节,它直接影响到指纹识别系统的识别精度.利用指纹图像在经小波多尺度分解后,低频部分集中了指纹图像的主要纹理信息这一特性,提出了一种在小波域对指纹图像进行Gabor滤波增强的算法.实验表明,该算法能够使图像的质量明显得到增强,方便了后续指纹特征的提取.
The Fingerprint image＇s enhancement plays a key role in the auto fingerprint identification system, which directly influences the final accuracy of the fingerprint identification. Considering that the lower frequency part of the fingerprint image mostly stands for the fingerprint＇s general texture after the wavelet transform, a new full fingerprint enhancement algorithm based on Gabor filtering is discussed in detail. Experimental results show that the algorithm can enhance the fingerprint images and make it more convenient for the minutiae extraction.
出处
《华东交通大学学报》
2008年第4期51-55,共5页
Journal of East China Jiaotong University
关键词
指纹识别
小波变换
方向图
GABOR滤波
fingerprint identification
wavelet transform
orientation map
Gabor filtering
