You have to know the external parameters of your setup (heigth, tilt angle), then you can just calculate distances with trigonometry and maybe some transformations... 

Have you thought about using a Kinect rather than a SR?

Cheers
Thorsten



Am 01.03.2011 um 06:16 schrieb guru hegde <guru84_00@yahoo.com>:

> Dear All,
> 
>         I have a 3D point cloud of a scene from swissranger SR-3000  and i have segmented it to different planar surfaces. I would like to know how can i measure the height of each of these segments. How is this done in general ?
> 
> 
> Thanks in advance,
> Gee.
> 
> 
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