基于Gabor滤波的掌纹图像线特征提取技术  

Line Feature Extraction Technology of Palm-Print Image Based on Gabor Filter

作　　者：张丽婷[1] 王孝莉[1] 林家恒[1] 

机构地区：[1]山东大学控制科学与工程学院,山东济南250061

出　　处：《兵工自动化》2007年第1期45-46,共2页Ordnance Industry Automation

摘　　要：利用Gabor滤波器增强掌纹线特征方法,将掌纹图像分割成若干子块并将子块变换到频率域。利用Gobar滤波器在频域内对子块在其主方向上进行滤波,增强特征纹线信息。然后对增强后的图像进行形态学Bot-Hat变换提取出掌纹特征纹线。实验证明,该方法可有效提取掌纹图像特征纹线信息。The Gabor filter palm-print line feature enhancement method is adopted to divide the palm-print into some sub-bloekes and transform the sub-block into frequency area. In frequency area, the Gobar filter is adopted to carry out the filtering in the main direction and enhance the feature line information. Then, the morphological Bot-Hat transformation is used for extracting the palm-print feature line of enhanced picture. The test shows that this method can extract the palm-print feature line information efficiently.

关 键 词：掌纹线特征提取 图像增强 GABOR滤波器 频率域滤波 形态学Bot-Hat变换 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]