零区域 meaning in English

null range

In the section of temporal segmentation , construct the stationary panoramic background first . we need get every frame of the shot at first , and get the motion vectors of every frame , and calculate the motion parameters . use the motion parameters , we can get the transformation of successive frames , and then get transformation of every two frames
当获得了背景的全景图后,就可以用经过校准的各帧图像和背景相关部分进行差分运算,则该帧图像中背景部分相减后为零,运动目标部分非零,从而得到非零区域就获得了该帧中运动目标所在的区域。