A massive dark object may be lurking on the edge of our solar system, according to scientists.
据科学家称，可能存在大型暗星体潜伏在我们太阳系的边缘。
When a round object rolls along a straight line, a track on the round edge is called a roulette or a cycloid.
当一个圆沿着一条直线滚动时，圆边上一点的轨迹叫做旋轮线或摆线。
On the basis of difference edge mask and current edge mask, a binary edge model of the video object is initialized.
其次在相邻帧差分边缘和当前帧边缘的基础上，检测出视频对象的初始边缘模板。
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