指纹脊线追踪算法研究

The study of ridge tracking arithmetic

提出指纹脊线追踪算法,该算法根据指纹脊线上中心点的灰度(梯度)值的变化,把整条指纹脊线追踪出来,使用该方法直接计算出指纹脊线上的中心点,并根据中心点的灰度(梯度)的变化把它们连接起来,从而直接在原始图像中计算出指纹细化图像,减少了图像预处理过程,同时根据对中心点的追踪可以把断纹连接起来,提高处理精度。

This paper according to the ridgeline＇s central point＇s grey level or grads put forward an arithmetic of ridge tracking ,the arithmetic could nearly depict the whole fingerprint ,using this arithmetic work out the ridgeline＇s central point directly and connect all of them that could omit the pretreatment ,and this arithmetic could connect breakpoint that would improve the precision.