A fast fingerprint continuous distribution pattern smoothing method and device

The invention discloses a fast fingerprint continuous distribution pattern smoothing method and device, relating to the field of fingerprint recognition. Based on the improved multiple-times smoothingalgorithm for each direction point on a fingerprint continuous distribution pattern, in the following smoothing process except for the first smoothing process, only the points located at the intersection of directions are smoothed, which can effectively reduce the time required for smoothing the continuous distribution pattern for many times without losing the smoothing effect, and improve the calculation speed of the continuous distribution pattern. 本发明公开了种快速的指纹连续分布方向图平滑方法及装置，涉及指纹识别领域，在对指纹连续分布方向图上每个方向点多次平滑算法的基础上进行改进，在除第次的后续平滑过程中只对位于方向交界处的点进行平滑处理，能在不损失平滑效果的基础上有效地减少连续分布方向图多次平滑所需的时间，提高连续分布方向图的计算速度。