background contrast ratio

基本解釋

The targets SNR(Signal Noise Ratio)and contrast are very low when the target is in the sea background in which there are sea waves and the reflexing light from the stretch welter.
海面背景下海面及連綿起伏的波浪反光使圖像的信噪比和對比度都較低，而且艦船目標(biāo)像素較少。
The invention relates to a target source with adjustable contrast ratio. The target of the target source is arranged between target integrating sphere and background integrating sphere;
本發(fā)明涉及一種可調(diào)對比度目標(biāo)源，該目標(biāo)源的目標(biāo)在目標(biāo)積分球與背景積分球之間；
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