Abstract: A new approach to extract fingerprint feature is presented.Introduce the angles D-value between minutiae and the core，and the number of ridge lines the minutiae across to the core as vectors of fingerprint feature.Compute the number of ridge lines using a new Bresenham algorithm，and extract the feature information.The experiment shows that this approach has the ability to extract the structure feature information of the fingerprint image availably.

摘要： 提出了一种新的指纹特征提取方法，引入细节点与中心点的角度差以及细节点到中心点所穿越的脊线数作为细节特征的向量，采用一种改进的Bresenham 画线算法计算穿越的脊线数，提取出了指纹图像的特征信息。实验表明该算法能准确有效地提取出指纹图像的结构特征信息。