求翻译：运动目标检测可以看做是一种时空运动显著性检测问题。从全局时空显著性出发运动目标的频域谱对比度更高。是什么意思？

Moving target detection can be seen as a spatial and temporal movement significant detection problem. From the global space-time was significantly higher spectral contrast in the frequency domain of the sex starting moving target.

Moving target detection can be seen as a time of significant movement detection issues. visibility from the global space aims of the campaign from the frequency domain spectrum higher contrast ratios.

The movement goal examination may consider as is one kind of space and time movement significance examination question.Embarks the movement goal frequency range spectrum contrast gradient from the overall situation space and time significance to be higher.

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