To memorize both feature and spatiotemporal information of moving objects is a critical human activity.

记忆动态场景中多客体的特征和时空信息是人类重要的认知活动。

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The feature is an essential element that comprises spatiotemporal data information and the event is a fundamental factor that result in changing spatiotemporal data.

地理特征对象是时空数据组织的基本单元，而事件是导致时空数据发生变化的根本原因。

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During contour evolution, the particle filter (PF) is used to track the feature points by enforcing spatiotemporal local constraints to handle the observation noise.

为避免观测噪声的影响，增加轮廓的时空局部约束并利用粒子滤波(PF)技术解决该类跟踪问题是非常有效的。

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