Settings for Capture of overhead powerlines

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Cadence
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Settings for Capture of overhead powerlines

Post by Cadence »

Hi All
Currently completing several projects capturing road corridor data - pavements, kerb and powerlines/ lighting poles etc. All scans are being conducted from observed survey control - including spheres and to date the data is excellent. However, the data on the overhead cables is very limited unless directly underneath. We are using Faro S150+, outdoor 20... (4x, 1/4) - scans are being done of a night in good conditions.
I'm finding it hard to find any good information on the "Clear Sky/ Clear Contour" and their impact on fine objects.
Any advice or suggestions will be appreciated.
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Re: Settings for Capture of overhead powerlines

Post by Raimund58 »

You might want to disable all filtering steps. While scanning and processing.
You also might want to enable the "Far Distances" scan option.
Regarding "Clear Sky/ Clear Contour" taken from the manual page51:

Clear Contour - Enables the dynamic contour filter. This hardware filter removes scan points resulting from hitting two objects with the laser spot, which mainly happens at the edges of objects.
Clear Sky - Enables the dynamic sky filter. During scanning, this hardware filter will remove scan points resulting from scanning empty spaces in the sky.

Old thread in this forum: https://laserscanningforum.com/forum/vi ... php?t=6617

Kind regards
Raimund
\o/
Cadence
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Re: Settings for Capture of overhead powerlines

Post by Cadence »

Thanks Raimund
We will try turning the filters off. I have previously used the C10 with no issues, wondering if this is a specific issue with Faro?

Paul
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Leandre Robitaille
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Re: Settings for Capture of overhead powerlines

Post by Leandre Robitaille »

viewtopic.php?f=93&t=17505&p=91701#p91701

See my post in this forum. I did a project regarding powerlines. One important thing is to turn off edge artifact filters

Hope this helps
Cadence
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Re: Settings for Capture of overhead powerlines

Post by Cadence »

Sadly the results are still limited - I'm not sure if the phase shift is less effective than the TOF for these surveys.
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