Surveying with white balls?

[jmorgan]

Some fella was placing white balls about a railway bridge, the balls around the size of a toilet cistern float. Various bits of stuff on tripods looking at the scene, some of the balls were not on the bridge itself one on a manhole cover for example, though it might have been there until placed on the bridge.

So, white ball on railway bridge fetish or something more mundane?

[mybrainhurts]

Alien hunter...

[mybrainhurts]

Wait...do you get big moths round there?

[anonymous-user]

Possibly differential-GPS surveying?

[jmorgan]

mybrainhurts said:

Wait...do you get big moths round there?

Alien moths.....

280E said:

Possibly differential-GPS surveying?

Ok, looked at that and found a site related to gps corrections?

[mybrainhurts]

jmorgan said:

Ok, looked at that and found a site related to gps corrections?

Filthy beast...

[Moonhawk]

Could be datum points for photogrammetry measurements/mapping.

[A - W]

We use a bit of kit called a Faro. It is a point cloud piece of equipment and the white balls are reference points for when the main equipment is placed.

Where did you see this?

[dxg]

Moonhawk said:

Could be datum points for photogrammetry measurements/mapping.

This is exactly what it will be.

[jmorgan]

A - W said:

We use a bit of kit called a Faro. It is a point cloud piece of equipment and the white balls are reference points for when the main equipment is placed.

Where did you see this?

Hope this works
https://goo.gl/maps/L2fCl

First few yards in. Had a tripod with a dohicky on top on the bridge side and one on the other side of the road

[Antony Moxey]

It was scanning. Basically the balls are points of reference so the scanner can be moved to scan points not visible from its initial location. It will produce a 3D point cloud of the object scanned consisting of literally millions of points.

[jmorgan]

Rightyho all, cheers.

[Dogwatch]

Antony Moxey said:

It was scanning. Basically the balls are points of reference so the scanner can be moved to scan points not visible from its initial location. It will produce a 3D point cloud of the object scanned consisting of literally millions of points.

They had a series of programmes doing scans of places such as The Pyramids and St Paul's. I wondered how they linked up scans of passages, rooms etc. to each other and the exterior.

[A - W]

jmorgan said:

A - W said:

We use a bit of kit called a Faro. It is a point cloud piece of equipment and the white balls are reference points for when the main equipment is placed.

Where did you see this?

Hope this works
https://goo.gl/maps/L2fCl

First few yards in. Had a tripod with a dohicky on top on the bridge side and one on the other side of the road

Will have an ask tomorrow to see where our teams are.

[red_slr]

I expect they will close the road for 9 months in the near future whilst they build a new bridge...

[jmorgan]

Ah. Ok. It was Yesterday.
I was more curious as to the technology, Ialso curious as to why that size of ball (careful mybrainhurts, fight it).

Edited by jmorgan on Tuesday 7th July 22:14