2010/1/26 Andy Pugh <[email protected]> > 2010/1/26 <[email protected]>: > > > is there 3d digitizer that looks like articulated arm with 3-4 sections. > > i do not need high accuracy because i want to scan car's body surface. > > thanks > > Yes, they exist and are relatively cheap. We have an old one at work > that simply outputs the x.y.z into a text file (it runs a DOS > program). It is a much older version of > http://www.faro.com/content.aspx?ct=di&content=pro&item=2 > > It would actually be relatively easy to make one, as it simply has a > rotary encoder in each joint. EMC could almost certainly solve the > kinematics and track the encoders. > > Point-cloud to surface is non-trivial. I have some VBA code I wrote to > produce the 3D Delaunay tesselation of a point cloud. I think if you > took that tesselation and deleted all the duplicated triangles you > would end up with a faceted mesh that could be converted directly to > STL. > I can let you have a copy of the code, I think. (it was written on a > whim in work time, so ownership is unclear) > > -- > atp > > This has been lively discussed at cnczone.com and there are a bunch of DIY's and free software out there. Search and thee shall be rewarded. :)
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