关键词: 平均曲率运动, 曲线演化, 显式方案, 半隐式方案, 离散中值滤波

Abstract: Three numerical calculating schemes of realizing the curvature motion formula in curve evolving are discussed，including explicit scheme，semi-implicit scheme and median filter scheme.Furthermore compares their evolvement goal，evolvement precision and time expense through the experiment research.And the result shows that the relaxation algorithm precedes the other algorithm whatever in evolvement goal，precision and speed.

Key words: mean curvature motion, curves evolving, explicit scheme, semi-implicit scheme, discrete median filter