许多激光测量设备有显示最小和最大尺寸的设定；操作者必须只能沿着边缘点扫描。在测量对角线长度的时候这一点非常有用；

Many laser measuring devices have setting which shows minimum and maximum dimensions; the operator must merely scan the dot along an edge. This is helpful for taking diagonal measurements.

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本文探讨了如何直接从扫描点云中通过上述四大几何属性识别物理特征的算法。 实验结果证明：逆求产品和样件在尺寸和结构上高度吻合。

The paper algorithms for determining these attributes directly from a scanned point set based on these attributes, the system validation and sample results were discussed.

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提出一种基于固定激光扫描点的三角投影法测量建筑物大目标三维尺寸的方法。

A trigonometric projection method based on fixed laser scanning points for measuring 3-d large building is proposed.

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