X axis and Y axis electric moving stages are driven to track object based on its position which is calculated by improved 3 frame difference algorithm.

通过改进的三帧差分法计算运动目标的位置，控制X、Y轴电动位移台跟踪目标。

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Occasionally, after a train had passed, Fyodorov would discover some object on the track and try at length to fathom its significance.

NEWYORKER: Among Animals and Plants

In another industry first, the Chimera architecture includes persistent tap-to-track technology, which allows users to touch the image of a person or object to focus on within a scene.

ENGADGET: NVIDIA intros Tegra 4i with built-in LTE, details Chimera camera tech with HDR

Each bit of each object in the arena must be triangulated continuously, so that the computer can keep track of which voxel it is in.

ECONOMIST: Looking out, looking in