在目标跟踪过程中，由于目标姿态不断变化，因此必须要对跟踪模板进行必要的修正，为了进行这种动态变化目标的跟踪，提出了一种动态更新模板的新方法，该方法是在基于仿射模型跟踪的基础上，首先在跟踪结果序列图象中进行运动目标检测，然后根据检测的结果来判断目标的姿态变化，再由给定的规则来对模板做出相应的修正，实验证明这种方法可以有效地适应目标的变化。

During the process of target tracking, the template should be updated properly in order to adapt the change of the target pose. In this paper, a new template update method is proposed. On the base of affine tracking, moving object detection is performed. We estimate the pose change of the object according to the detection result image. A new update method is used as follows: Firstly, pixels belong to target and those belong to background are updated with different power; Second, because the template size does not change during tracking, some strategies must be adopted: if the object is turning bigger, the old template is stretched to the proper size and placed in the new template's proper position, the rest pixels in the template are determined by the corresponding pixels in the input image. Otherwise, if the object is turning smaller, the old template is shrunk to the proper size and placed in the new template's proper position. The rest pixels in the template are determined by the corresponding pixels in the input image in the same way. Experiments using these algorithms show this method could keep robustness under complicated environments.