1·We numerically show that there are many extremums in dependence of the propagation distance on the period lengths of perturbation.
数值模拟发现，在脉冲传输距离与扰动周期长度的关系中存在着一种多极值结构。
2·Experiment results show that similarity measure based on fuzzy mutual information has less local extremums and better optimization character.
实验表明，模糊互信息函数比互信息函数具有更少的局部极值点和更好的优化特性。
3·The experimental results show that the method can smooth the local extremums of mutual information and reduce the possibility of wrong medical image registration.
实验结果表明，该方法能够有效平滑互信息的局部极值，减少错误的医学图像配准。
4·For the mutual information calculated by partial volume interpolation method and Shannon entropy, certain local extremums are inevitable, which may lead to inaccurate registration.
采用部分体积插值法和香农熵计算得到的互信息，无法避免会出现一些局部极值，可能导致错误的配准。