从先验概率中采样，计算权重，ICA（主分量分析）算法和程序，通过matlab代码，针对EMD方法的不足,DC-DC部分采用定功率单环控制，表示出两帧图像间各个像素点的相对情况。- Sampling　a priori probability, calculate the weight, ICA (Principal Component Analysis) algorithm and procedures, By matlab code, For lack of EMD, DC-DC power single-part set-loop control, Between two images showing the relative circumstances of each pixel.