NavVis VLX - wearable mapping

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cjmackenzie
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Re: NavVis VLX - wearable mapping

Post by cjmackenzie »

It's all kicking off with INTEGEO Digital 2020 this week. What could be better than virtually attending the world's biggest trade fair for the geospatial industry? Attending it for FREE, of course! Register with NavVis today and get yourself a complimentary ticket for the entire week. We look forward to seeing you! https://navv.is/3dmjN8b
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Re: NavVis VLX - wearable mapping

Post by GeorgSchroth »

For those who are already heavy users of VLX: We just added an undo function for setting control points in the field :)

controllPointOverview-small.gif
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Re: NavVis VLX - wearable mapping

Post by GeorgSchroth »

Long time no post, but believe me when I say that we have been busy at NavVis to transcend the current workflows of post processing laser scan data.
Many of you have a set of super expensive work stations running whenever a tight project deadline comes along. And if a registration doesn't work out right away, you wish you had even more of those in you office. Even more, these monster machines need to get upgraded every few years.

I don't believe this can be the answer going forward. Why put all those machines in the office and maintain them yourself if this can be done as a service. Many times I heard that "the cloud" is not secure enough, you don't know where the data goes and you don't have backups. But then the US Department of Defense is the biggest cloud customer ever (they've used both Amazon AWS & Microsoft Azure). So it must be possible to do it right.

And that is exactly what we want to provide to M6 and VLX customers:
  • Process wherever and whenever: no need to limit yourself to the office with all the machines (think home office)
  • Maximum efficiency: use 100 machines or even more if needed to process in parallel to finish you job ahead of the deadline
  • Own your data: Our cloud architecture ensures that not even our team can access your data, hosted with all the reliability of AWS in Frankfurt
  • Minimize manual work time: The new workflow with previews ensures that you can front load all adjustments and settings at the start and only wait for the email that reminds you that processing is done
Have a look here:
https://navv.is/3lGxFNM

Looking forward to your feedback and questions! Lets do cloud right :)
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Re: NavVis VLX - wearable mapping

Post by GeorgSchroth »

by the way, on this page you will find a lot more details on the actual functionality:

https://www.navvis.com/blog/introducing ... -on%20Blog

Here is one of our pilot customers feedback:

youtu.be/5WYVN-9e2hU
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Re: NavVis VLX - wearable mapping

Post by GeorgSchroth »

Shane and Dennis from LSF but for sure many many others outside the LSF have already done extensive accuracy evaluations of the VLX (thank you for that). But not everyone had the chance to compare the VLX scans against a ground truth scan.

As you know building a reliable ground truth is not a quick scan, and the team working on this project realized that as well:
To get a reference, we first scanned a hallway at NavVis with a TLS (that many of us own) and used cloud to cloud registration. However, the resulting point cloud showed clear artifacts from incorrect registrations.

So we decided to go an get the most precise scanner out there (afaik) and used a total station to precisely position the scans with respect to each other (which took us a full day overall together with a trusted surveying customer of ours)

The result of the comparison is pretty good I would say ;) Actually a lot better than the VLX accuracy spec. This is not too surprising since we made and will continue to add quite a few enhancements to our algorithms & software. So all the devices out there are getting better and better with every release.

But have a look for yourself and let me know what you think or would need in addition (point clouds can be downloaded here https://navv.is/2HS4LM0 )


youtu.be/dzCFEkd9GzQ
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Re: NavVis VLX - wearable mapping

Post by landmeterbeuckx »

GeorgSchroth wrote: Tue Dec 01, 2020 9:34 am Shane and Dennis from LSF but for sure many many others outside the LSF have already done extensive accuracy evaluations of the VLX (thank you for that). But not everyone had the chance to compare the VLX scans against a ground truth scan.

As you know building a reliable ground truth is not a quick scan, and the team working on this project realized that as well:
To get a reference, we first scanned a hallway at NavVis with a TLS (that many of us own) and used cloud to cloud registration. However, the resulting point cloud showed clear artifacts from incorrect registrations.

So we decided to go an get the most precise scanner out there (afaik) and used a total station to precisely position the scans with respect to each other (which took us a full day overall together with a trusted surveying customer of ours)

The result of the comparison is pretty good I would say ;) Actually a lot better than the VLX accuracy spec. This is not too surprising since we made and will continue to add quite a few enhancements to our algorithms & software. So all the devices out there are getting better and better with every release.

But have a look for yourself and let me know what you think or would need in addition (point clouds can be downloaded here https://navv.is/2HS4LM0 )


youtu.be/dzCFEkd9GzQ
Georg, as much is a i like the vlx and am seriously considering a new investment i find this video extremely misleading in terms of speed vs the faro. Of course the vlx will be faster then a faro but with 6 minute scans as i see from the video approx this is no surprise.
If it is only 1 floor i would challenge to be nearly as fast with a Riegl. An RTC360 would be pretty quick in this environement as well.

The walking around the tables and more data is obvious but we scan in function of what is desired and most of the time it is constructual elements.

I understand it is a marketing video of course. As well as all videos of registration make it flawlessly and without errors, my experience as an operator even after 7 and more years that the perfect pointcloud out of a machine doesn't exist.

My 2cts.
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Re: NavVis VLX - wearable mapping

Post by Scott »

The VLX seems very promising. It is flexible, fast, and produces beautiful images--at least in this demonstration. It's hard to compare it with tripod based solutions that scream stability--the VLX looks subject to knocks (thus fragility), but that may not be the case at all. What is often overlooked is NavVis's excellent software that looked very well executed (and useful) when I saw a live demonstration in San Francisco a few years ago (rolling cart model). I'd like to see useful, self-standing deliverables that are easily exported to any CAD/BIM platform without much fuss. Getting from A to B is where the details matter. The scanning is the easy part, but how is the data used once collected? NavVis is on to something, IMO.
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Re: NavVis VLX - wearable mapping

Post by GeorgSchroth »

landmeterbeuckx wrote: Tue Dec 01, 2020 1:43 pm Georg, as much is a i like the vlx and am seriously considering a new investment i find this video extremely misleading in terms of speed vs the faro. Of course the vlx will be faster then a faro but with 6 minute scans as i see from the video approx this is no surprise.
If it is only 1 floor i would challenge to be nearly as fast with a Riegl. An RTC360 would be pretty quick in this environement as well.

The walking around the tables and more data is obvious but we scan in function of what is desired and most of the time it is constructual elements.

I understand it is a marketing video of course. As well as all videos of registration make it flawlessly and without errors, my experience as an operator even after 7 and more years that the perfect pointcloud out of a machine doesn't exist.

My 2cts.
Agreed. For sure we did that "race" with a wink. As you mentioned, there is no doubt that a dynamic scanner is a lot faster than a static one. Basically by design. And I think there is no 100% fair comparison if you don't have a very specific application in mind for which you collect the scan data. E.g. for a 2D floor plan, I would only have a quick walk into each room and take one pano. So I guess like 5-10min total.

But the real question that customers face is the data quality of a dynamic scanner in comparison to a TLS. Since it is quite some effort we wanted to provide that to everyone. At least I haven't seen a comparison with ground truth data for other dynamic scanners.
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Re: NavVis VLX - wearable mapping

Post by GeorgSchroth »

Just to emphasize that our goal was to provide a TLS point cloud reference to judge the VLX data quality:
I think hardly anyone would doubt that dynamic scanners like the NavVis VLX or the Leica BLK2Go are a lot faster than traditional static laser scanners. The big question was: Are they accurate enough?
This year was big for dynamic scanners and the data quality is on a completely new level. So take a look yourself as we compared one of the most accurate TLS in the market with the NavVis VLX: https://navv.is/3o6ELMx (point clouds available for download)
Screenshot 2020-12-02 at 08.41.45.png
Screenshot 2020-12-02 at 08.42.21.png
The quantile plot below is only showing the results for this scan and cannot be considered as our new spec. We stay on the existing specification to not to raise wrong expectations (https://www.navvis.com/resources/specif ... navvis-vlx). But fore a lot of improvements have been done over the last 6 months (some of which we will release to existing customers in early februar next year.
Screenshot 2020-12-02 at 12.23.16.png
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Re: NavVis VLX - wearable mapping

Post by msivil »

Hi,

Seems to be a great product, but I see couple of limitations. Scanning of hard to reach areas (portability) and modeling highest lod values (data quality).
Best Regards,
Marko Sivil

www.sivil3d.fi
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