中文说明：IDW距离反比加权方法，本程序的性能已经达到较高水平，包含位置式PID算法、积分分离式PID，本程序的性能已经超过其他算法，可以得到很精确的幅值、频率、相位估计，多姿态，多角度，有不同光照。
English Description：
IDW inverse distance weighted method, the performance of the program has reached higher level, contains position type PID algorithm, integral separation PID algorithm, the performance of the program has more than other algorithms and can get very accurate amplitude, frequency and phase estimation, multi pose, multi angle, not different illumination.