Firstly build a background image in the complex background with a moving object and obtain initial object contour from the current image by frame-difference.
首先利用自适应的背景提取算法从带有运动目标的复杂背景中构建背景图，并提取出运动目标轮廓。
2
Electric potential contour and current streamline figures show that it is important to consider the effect of the low conductivity of skull on electric potential and current flow.