The spatial discretization method is used to detect the fast collision among moving objects and collision between moving objects and terrain.
为了实现运动物体与地形的匹配，采用了一点匹配法和面匹配法。
In order to make full use of the spatial information, color segmentation and background model are combined to extract moving objects with pixel-wise precision.
为充分利用空间信息，提出将彩色图像分割与背景建模结合起来，得到具有精确边缘的运动目标。
In a user defined time interval, the predictive continuous range query continuously returns moving objects that will appear in a spatial query range during a future temporal query interval.
预测性连续时空区域查询在用户指定的时间范围期间持续地返回给定未来查询时间范围期间将出现在查询区域的移动对象。
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