快速并行算法是经典算法中比较好的一种细化算法,但其存在固有缺陷,可能产生信息丢失。为了克服这个缺点,提出了重合算法,最后为了减少计算时间和冗余信息,提出了基于模板保留的算法。-Fast parallel algorithm for the classical algorithm is a good thinning algorithm, but its inherent defects, the potential loss of information. In order to overcome this shortcoming, a coincidence algorithm, the final order to reduce the computing time and redundancy of information, the reservation-based algorithm for template.