Large object with accurately known points

[GeoffT]

Hello,

I am wondering if there is a possibility of scanning an object where placing a calibration corner would be impossible (size etc). In place of a calibration corner could I stick calibration points onto the object and if I knew the exact co-ordinates of each point through surveying could I then use David to make a scan? If so could this be done without the need to use a stepper motor?

I'm waiting for my starter kit to arrive so my mind is wandering a bit!

Thanks

Geoff

[hal]

Hello Geoff and welcome,

you can't use a "random" set of markers on the object. David need to know the calibration patterns as is, with markers on two perpendicular sheets.
The only way to scan without panels is the so called "panel-less" method. But in this case you need one of these solutions:
- scanning with a precise stepper motor controlled by a device that allow you to repeat every time the same movement/rotation, with the higher precision;
- scanning with the Structured Light method. At present day you can try this with the quick implementation into David, but in a near future we can scan more easily with David Structured Light, only have little patience.

Best Regards,
Mattia