一种基于参考点方向的指纹极坐标匹配算法

A Fingerprint Identification Algorithm Based on the Orientation of Reference Minutiae

指纹匹配是实现指纹识别的重要环节,提高识别率并减少算法复杂度是指纹匹配的核心问题。本文针对现有指纹识别系统存在的参考点定位复杂、准确度不够高、适应性不够强等问题,提出了一种利用指纹的方向图和指纹纹线特征相结合确定参考点的方法,并通过调整极角进行基于极坐标的点点匹配,显著提高了指纹匹配的速度和精度。实验结果表明,该算法复杂度低、鲁棒性好、识别率较高,有较强的实用性。

Fingerprint matching is a key technique in fingerprint identification. A matching approach of t ingerpnnt minutiae is proposed in the paper. In this approach, the orientation graph of the fingerprint is used to determine the optimal matching reference point, and the angle of the fingerprint minutiae is adjusted based on polar coordinates. Experiments show that the speed and precision of the fingerprint recognition are improved effectively.