基于简单方向场的指纹中心点快速检测方法

Fast Detection Method of Center of the Fingerprint Based on Sample Orientation Field

指纹中心点周围分布着大量的可以直接识别的特征信息,本文提出了一种检测指纹中心点的快速简单的算法,利用基于块的指纹方向场,二值化后得到简单方向场,基于这种简单方向,可以定位指纹奇异点的所在的块,在由指纹预处理后细化图像,可以快速精确定位指纹中心点所在的位置。

Center of the fingerprint is surrounded by a large number of useful features,this paper propose a fast and simple algo-rithm of detecting the center point of the fingerprint based on block orientation field of fingerprint, generate the sample version of the orientation field of fingerprint by binarization, Locate the Block where contain singularity of fingerprint, after pre-processing and thin-ning, Center of the fingerprint can be located rapid and accurate.