摘要
根据掌纹图像的频谱特征,提出了一种自动选取Gabor滤波器方向的方法.该方法将掌纹图像的Fourier谱映射到极坐标域,分析并计算Fourier谱在角度轴上的投影峰值,从而设置Gabor滤波器的方向.实验结果表明:该方法提高了掌纹图像的识别率,且算法实现简单.
Based on the spectral characteristics of palmprint images, we presented an automatic method for selecting the direction. Specifically, the Fourier spectrum of palmprint image is mapped to polar coordinates domain, then the peak of spectrum on the projection axis is analyzed and calculated, at last the direction parameters of Gabor filter is obtained. Experimental result shows that this method improve the recognition rate of palmprint images and that the algorithm is simply achieved.
出处
《中南民族大学学报（自然科学版）》
CAS
2010年第4期77-81,共5页
Journal of South-Central University for Nationalities：Natural Science Edition
基金
国家自然科学基金资助项目(60972158)
关键词
GABOR滤波器
方向选取
掌纹识别
Gabor filter
direction selection
palmprint identification
