与其它测量方法相比，该法可以提取出目标散射特性的大量信息。
Compared with other methods of measurements, this method can obtain great many information about scattering properties of targets.
图像测量就是测量被测对象时，把图像当作检测和传递信息的手段或载体加以利用的测量方法，其目的是从图像中提取有用的信号。
It is to measure target objects by using images to transmit information, Its purpose is to draw the useful information from the images.
在深入研究上述方法的基础上，提出了一种自由曲面的非接触自动测量方法，介绍了测量系统的构成、曲面边缘的提取、自动扫描方式的规划以及测头跟踪方式等设计要点。
On the basis of a thoroughgoing study of the above methods, a non contact method for measuring free form surface automatically is given, and some key techniques are also described.
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