基于动态方向场的指纹图像增强算法

The Algorithm of Fingerprint Enhancement Base on Dynamic Direction

文章研究了目前的指纹图像增强算法,提出了一种新的指纹方向场的动态计算方法。先利用Radon变换来计算方向场,然后用一组方向滤波器对该图像进行滤波,以达到指纹图像增强的目的。实验结果表明,该算法简单有效,为下一步指纹图像匹配奠定了坚实的基础。

In this paper, we studied the algorithms of fingerprint image enhancement and put forward a new method to calculate the direction image. Firstly, Radon Transform is used to estimate the direction image, then, the image is filtered by a set directional filters, thus, we get the enhanced image. The experiment results indicate that this method is simple and efficient; which established the solid foundation to fingerprint image identification.