Aligning Cyclone Scan Data with Total Station Data - HELP!

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laura_riverscience
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Aligning Cyclone Scan Data with Total Station Data - HELP!

Post by laura_riverscience » Tue Feb 14, 2017 1:07 pm

So the main aim of this work is to compare the accuracy of TLS data using data collected from a total station.

As the data was collected in a different country (i.e. not the UK) a new coordinate system was created using the Total Station.

So I have managed to get that coordinate data off the total station and into ArcMap, but now I am having trouble aligning it with TLS data.

The TLS data was processed in cyclone, and registered using targets which have been measured with the total station. However when i decimated the point cloud using ToPCAT, to create a DEM the two datasets do not line up.

I have thought about trying to work out the coorindates of the targets from cyclone, and lining them up that way.. but again no idea how i would go about doing this.

Any suggestions? Please!! :)
Last edited by laura_riverscience on Tue Feb 14, 2017 7:40 pm, edited 1 time in total.

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Andy H
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Re: Aligning Cyclone Scan Data with Total Station Data - HEL

Post by Andy H » Tue Feb 14, 2017 2:30 pm

Have you observed the any targets using the total station and the scanner?


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laura_riverscience
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Re: Aligning Cyclone Scan Data with Total Station Data - HEL

Post by laura_riverscience » Tue Feb 14, 2017 4:44 pm

Yeah the targets show up on the scan data and have been surveyed using the total station...

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Re: Aligning Cyclone Scan Data with Total Station Data - HEL

Post by tbwester » Tue Feb 14, 2017 5:11 pm

you have to register the data in cyclone (as normal). Then register the scan data to the total station targets (naming targets from the total station and scanner the same). The total station vertexes should be set as default(bold) in your registration interface.

If your bringing this into arcmap, then perhaps the coordinate systems in arc are messing with the transformations and that is causing the issue? arcmap is no place to compare accuracy - cyclone will give you a great and accurate report for each of the targets measured.

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Re: Aligning Cyclone Scan Data with Total Station Data - HEL

Post by SCCS HDS » Tue Feb 14, 2017 5:52 pm

laura_riverscience wrote:So the main aim of this work is to compare the accuracy of TLS data using data collected from a total station.
I can see this becoming my most favourite topic on here.

Are you going to test a lot of different scanners under different conditions? :ugeek:

Let me know if you need a license for Cyclone-Register to get you started?
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