基于连续分布方向图的指纹图像分割算法研究  

The Research on Segmentation Algorithm of Fingerprint Image Based on Continuously Distributed Directional Image

作　　者：贾则[1,2] 戴荣涛[3] 张芬[1] 谢峰[4] 权琳[4] 徐荣青[1] 

机构地区：[1]江苏科技大学电子信息学院 [2]中国人民解放军91439部队,辽宁大连116041 [3]中国人民解放军92823部队 [4]中国人民解放军91439部队

出　　处：《微电子学与计算机》2007年第12期141-143,共3页Microelectronics & Computer

基　　金：江苏省自然科学基金项目(BK2001056)

摘　　要：在研究和分析了典型的指纹图像分割算法的基础上,提出了一种新的基于连续方向图的指纹图像分割算法。这种连续方向图过渡平滑、自然,具有很好的连续性、渐变性和抗噪性,同时又具有极高的精确度,能更精确地反映指纹脊线的结构特征,从而使得分割效果更佳。实验结果表明,该算法处理效果好、运算速度快,有效地满足了指纹图像分割的要求。After investigation and analyzing the existent segmentation method, a method based on the continuous directional images is proposed for the segmentation of fingerprint images. This continuous directional image transits smoothly and exhibits not only good continuity, gradualness, and excellent robustness to the noises, but also very high precision. It can represent the basic structural features of the fingerprint more precisely and makes the segmentation well. The experiment shows that this suggested segmentation method has the advantages of good processing effect and fast operating speed. It can effectively meet the needs of the segmentation.

关 键 词：指纹分割 灰度方差 方向图 连续分布方向图 

分 类 号：TP391.4[自动化与计算机技术—计算机应用技术]