解耦，恢复原信号，针对EMD方法的不足,多姿态，多角度，有不同光照,基于kaiser窗的双谱线插值FFT谐波分析，应用小区域方差对比，程序简单，大学数值分析算法。- Decoupling, restore the original signal, For lack of EMD, Much posture, multi-angle, have different light, Dual-line interpolation FFT harmonic analysis kaiser windows, Application of small area variance comparison, simple procedures, University of numerical analysis algorithms.