指纹图像分割与增强算法的研究  

Study of fingerprint image segmentation and enhancement algorithm

作　　者：梁振东 王坤杰 王伟[2] 

机构地区：[1]河南机电职业技术学院,河南郑州451191 [2]内蒙古工业大学,内蒙古呼和浩特010051

出　　处：《电子设计工程》2013年第5期4-5,9,共3页Electronic Design Engineering

摘　　要：在研究和分析指纹图像的强度场和方向场原理基础上,根据人眼的视觉原理,提出一种指纹图像分割与增强的方法。按照指纹图像前景色梯度大,背景色梯度小,可以将指纹前景色很好的分割出来。并且通过纹线方向进行滤波增强处理,可以得到良好的效果。对随机抽取的指纹图像分割和增强的实验证明,取得了满意的结果。此方法的优点是将指纹纹线断裂处很好的连接,可以广泛应用于指纹图像的预处理过程当中。Fingerprint recognition technology is widely used in the attendance system, social security system and the driver＇s exam system. It is one of the most widely used biometric technology. Based on gradient field and the direction field as well as the human visual principle, a new way to divide and enhance the finger print image is put forward. With bigger gradient of foreground color contrasted with smaller gradient of background color, the foreground color of the finger print can be easily split out. Meanwhile, by means of the more intensive filtering, the more reinforced effect can be obtained. After experimenting, the result is satisfying. The advantage of the method is the great joint between fractures of the finger streak lines. Thus, this method can be well applied to procedure of the fingerprint image preprocessing.

关 键 词：指纹识别 分割 增强 方向场 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]