指纹图像细化及特征点提取算法的研究

Algorithm of Thinning and Minutiae Extraction of Fingerprint Image

对改进的OPTA算法和指纹细节特征点提取算法进行了详细的研究,针对改进的OPTA算法产生的细化不全和毛刺较多的问题,提出了一种可变的消除模版和矫正消除模版;针对指纹细节特征点提取算法产生的大量伪特征点问题,提出了边缘信息判别法,有效地去除了边界伪特征点。实验证明,本文的方法简单快速,而且具有较高的准确率。

This paper introduces the improved OPTA algorithm and extracting minutiae algorithm in detail Aiming at its incomplete thinning and many burrs, an changeable and correcting template is proposed to extract minutiae and pseudo-features according to fingerprint image features. This paper proposes the method of judgment of border informarion ,which can effectively eliminate border minutiae. The experimental results show that this algorithm is simple, quick and accurate.