摘要
针对指纹图像的特点,建立了一套指纹图像预处理体系,为指纹特征点的提取和比对奠定了良好的基础;文中主要进行了以基于细节点的指纹识别系统的处理流程为线索,设计了适合于这种指纹识别系统的Gabor滤波器,并对Gabor滤波器各参数的设定进行了改进;实验结果表明改进后的Gabor滤波器的处理效果明显优于传统算法。
According to the characteristics of the fingerprint image, a complete Gabor filter based on fingerprint image preprocessing method is built. It lays a good foundation for minutia points extracting and fingerprint matching. The paper contents these main points. In the mlnutiae--based fingerprint system, we designed the Gahor filter whose parameters was selected. The test result shows the new algorithm has improved the result of the image processing. The algorithm of this paper is valuable in both theory and practice.
出处
《计算机测量与控制》
CSCD
2007年第1期132-134,共3页
Computer Measurement &Control
关键词
指纹识别
预处理
方向图
GABOR滤波器
特征提取
automatic fingerprint identification； pretreatment of fingerprint, directional image； Gabor filter； characteristic extraction
