In feature extraction, a difference motion detection algorithm of adaptive background updating is proposed, which has a good robustness to the changing of background and illumination.

在特征提取方面，提出了一种自适应背景更新的差分运动检测算法，该算法在运动对象轨迹的检测中对背景的抖动和光照条件的变化具有较好的鲁棒性。

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The difference is staggering, especially when Dietz trots out the slow-motion footage.

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Range of motion was more improved in the platelet group after six months, but the difference between the groups wasn't significant.

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