【作者】 殷新春； 王秋平； 陈春霞；

【Author】 Yin Xin-chun , Wang Qiu-ping , Chen Chun-xia(Department of Computer Science and Engineering, Technology Institute, Yangzhou University, Yangzhou 225009)

【机构】 扬州大学计算机科学与工程系；

【摘要】 本文提出了一种改进后的指纹预处理方法。在计算点方向图时引入了高斯滤波,提高了点方向图的准确性,同时利用计算出的方向信息来实现了指纹的增强、二值化以及不可恢复区域的提取,实验证明效果较好,为可靠、准确地实现指纹自动识别提供了一种可行的方法。更多还原

【Abstract】 This paper provided a improved preprocessing method of fingerprint. Guass Filter was introduced while calculating the direction, and it improved the accuracy of the fingerprint direction. At the same time, the direction information of the fingerprint image was used to enhance the fingerprint image, binarize , refine the beyond retrieve area of fingerprint images. The experiment had proved the better result. This preprocessing method could improve the accuracy and the reliability of the AFIS(Automatic Fingerprint Identification System).更多还原