基于matlab实现干涉显微镜图像重构的相位质量优质度计算函数- PhaseDerivativeVariance creates a phase quality map by computing the variance of the partial derivatives of the locally unwrapped phase. This is then used to guide the phase unwrapping path. Uses only the 4 neares

利用颤振导数拟合，拟合出阶跃函数的系数，用于时域分析-Flutter derivatives utilizing fitting, fitting step function coefficients, time domain analysis is used