Segmenting the fingerprint image with low-quality exactly and quickly is an important step for improving the performance of the automatic fingerprint recognition system.

• 文中在分析了方差作为分割指标的局限性基础上,从指纹图像的纹理特征出发,研究了指纹图像的灰度分布规律,提出了基于纹理的指纹图像分割算法。