Motion features in video can usually be divided into two types. They are global motion, which is caused by camera motion, and local motion, which is caused by video object motion.

视频中的运动特征通常可以分为全局运动和局部运动两种，分别表示摄像机运动和视频对象运动的特征。

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The object motion was represented using hierarchical data structure of quad tree.

采用四叉树的层次数据结构来表示物体运动。

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We proposed a robust approach to object motion estimation between frames based on block matching in this paper.

详细论述了基于块匹配的鲁棒运动估计算法。

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So, for example, if you were trying to study the motion of some object, here is one example.

举个例子,如果你想研究某个物体的运动,这里有个例子

耶鲁公开课 - 基础物理课程节选

But if I see you through the glass, the object is going on some trajectory, which has got both up and down and horizontal motion.

但是如果我透过窗户看到你,这个物体沿着某个轨迹运动,既有上下,也有水平方向的运动

耶鲁公开课 - 基础物理课程节选

You see an object in motion, you find a and you give a a certain numerical value, 10 meters per second squared.

你看到一个物体在运动,你会发现它的 a,然后给 a 赋值,10 米每秒平方

耶鲁公开课 - 基础物理课程节选

Soon, however, the object's motion suggested it was in an orbit around the Earth.

BBC: New 'moon' found around Earth

They do not make money unless an object goes into motion.

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During that time, I gained a whole new understanding of the concept of inertia, and the challenge of getting an object at rest into motion.

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