Background subtraction technique has been widely used in many vision systems as a preprocessing step for object detecting and tracking.

背景差异抠图算法在许多视觉系统中因被用作物体跟踪、检测的预处理步骤而被广泛使用。

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The axial ct subtraction angiography with subtraction factor 0.8 and color enhancement technique could keep the ventricles on the background.

而减影系数为0 . 8伪彩色增强彩色轴位CT减影血管成像可以保留脑室等解剖背景。

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Created by the robotic geniuses at the University of California at Berkeley, this robot can fold clothes using green screen technology and a technique called, "background subtraction."

由伯克利加州大学的机器人天才创造，这种机器人可以折叠衣服用绿屏技术，这种技术称为“背景减法。”

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