Besides, this thesis takes account of the case that the gray-level of environment changes rapidly, and we add the value of change to the threshold in order to extract the accurate vehicle areas.

• 并且本文考虑到环境光线发生突变的情况,为了在这种情况下正确提取运动车辆,二值化差图像时采用的阈值加上了灰度的平均变化。