它以8031单片机为基础采用硬件、软件相结合的方法实现主帧、副帧同步。

Major frame and subframe are synchronized by using the combining method of hardware and software based on 8031 microprocessor.

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随后，主循环在每次循环时都检查事件、重置绘图状态、绘出圆形的“门户”窗口，然后以动画形式将其失真返回当前时帧。

Then, each pass of the main loop checks for events, resets the draw state, draws the circular "portal" windows, then animates their distortion back to the current time frame.

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对于待跟踪的运动目标，采用三帧差和区域增长法分割目标并得到主颜色信息。

We used frame difference and region growing method to divide target and get main color information.

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