基于脊线跟踪的指纹核心点检测

摘要

准确、可靠地检测指纹核心点对于指纹的分类和匹配有重要的意义.针对指纹图像核心点提取中准确判断和精确定位的难题,介绍了一种比较好的核心点检测算法.根据核心点是纹线曲率最大的点的定义,利用脊线跟踪的方法求出核心点.实验结果证明该方法能够从指纹图像中较精确、可靠地提取出核心点,并具有较好的鲁棒性.%Accurate and reliable detection of core point for fingerprint classification and matching are important. This paper introduces a good method for core point detection in fingerprint to improve accuracy of the position and reliability of the core point. According to the definition of the core point is that the greatest point of curvature ridge, this paper use the ridge line tracing methods derive the core point. The experimental results show that the method can extract the core point from the fingerprint image more accurately and reliably, and has good robustness.