争取专业人士的支持，并与他们分享你的目标和背景。

Enlist the support of professionals and share with them your goals and context.

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计算了到达探测器靶面上目标和背景的光谱辐照度。

The target and background irradiance that can arrive at the detector's target plane were computed.

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过渡区是实际图象中介于目标和背景之间的特殊区域。

Transition region is a special region located between the object and background in real images.

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