他们会给你的照片添加一个大小比例的标尺，同样也会让观看者了解是哪种人住在那里，他们的穿着怎样，他们是什么样子的。
They will give it scale and also let viewers know what sorts of people live there, how they dress, and the like.
在得到人体实体切片序列图像中大脑器官的边缘轮廓线的基础上，提取图像中的标尺，利用图像中提供的标尺计算像素和实物的比例关系；
On the base of distilling edges from images of human slices, by calibrating the gauge, the ratio relationship between the pixels of the gauge and the real section areas were obtained.
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