【摘要】 本文研究了一种指纹图像预处理方法，结合指纹的结构信息对指纹图像进行了处理．包括方向图的计算、平滑，图像分割，方向滤波及增强二值化等．并给出了实验结果．实验结果表明：处理效果较好．更多还原

【Abstract】 In this poper, 1fingerprint image prevrocessingis studied. The fingerprint image is processed with reference to the structural information. These process include the calculation and smooth of the directional image, image segmentation, oriented filter, enhencement and bineration. The paper also provides the experimental result, and it proved to be good effect.更多还原