变化检测 通过相减等操作将两幅匹配图像的像素加以比较从而检测出其中物体差别的技术
Change detection is a technique that compares the pixels of two matching images through operations such as subtraction to detect the differences in objects between them
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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