registering large scan

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bdawood
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registering large scan

Post by bdawood »

Hello Everyone

I have a large scan to do, it is an estimated 2000 to 2500 scans, I wonder about the manpower to process and register the scans. Can someone with the experiences share some of his thoughts, this will be very helpful and truly appreciate it.
we are using Faro units but the final product will be in zfc format to get it in Smart plant, so we are going to use LFM Gateway

Thanks again in advance
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bananmac
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Re: registering large scan

Post by bananmac »

Hi Bashar,

This year I've completed a project containing roughly 5000 scans. The building had 23000 square meters and withe the area around it it was 34000 sq m all together. I scanned the building with one of my fellow workers. It took us 4 weeks in a field to collect all the data. Registering the scans in SCENE and then import it to PointCab took 3,5 weeks. I had some problems with the scanner (dust on the mirror which produced distance errors and influenced the final registration in a bad way...) and we had to shot more checkerboards with total station to fix the registration. I saved some time preprocessing the scans in the evenings after scanning. I estimate that I could have saved one week in the office work if I have had cleaned the scanner mirror.

Hope it gives you an idea on work time with big projects.

Cheers,
Maciej Banaszkiewicz
WarrenT
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Re: registering large scan

Post by WarrenT »

bananmac wrote: Tue Jul 09, 2019 7:54 am Hi Bashar,

This year I've completed a project containing roughly 5000 scans. The building had 23000 square meters and withe the area around it it was 34000 sq m all together. I scanned the building with one of my fellow workers. It took us 4 weeks in a field to collect all the data. Registering the scans in SCENE and then import it to PointCab took 3,5 weeks. I had some problems with the scanner (dust on the mirror which produced distance errors and influenced the final registration in a bad way...) and we had to shot more checkerboards with total station to fix the registration. I saved some time preprocessing the scans in the evenings after scanning. I estimate that I could have saved one week in the office work if I have had cleaned the scanner mirror.

Hope it gives you an idea on work time with big projects.

Cheers,
Maciej Banaszkiewicz
Good day

This is very interesting, thank you for sharing your information, if i may ask, what resolution and quality did you scan and did you use color as well?

How big was your final project?

What pc did you use for the processing?

looking forward to your response.
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bananmac
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Re: registering large scan

Post by bananmac »

To reduce the final size of the project we were always trying to set the lowest (and reasonable) resolution and quality while scanning, so most of the time it was 1/8 x2. There was also an area in the building where we had to scan with 1/4 x2settings as it was requierd by our customer. Outside scans were partly made also with 1/4 resolution. So I estimate that around 10~15% scans where with 1/4 res and the rest was 1/8 x2. We did all scans with no colour. Used Scanners: Focus S150, Focus X130, Focus X330, Focus 3D 120.

SCENE Project was ~350gb and PointCab ~150gb. It is possible to further reduce the size of SCENE Project but for this I would have to delete all scanmanagers, clusters, objects and whole project structure. But I think that after this it would be almost impossible to navigate through the scans...

Registration was very hard as it took lots of time everytime displaying the corespondence views. Later I displayed it only partly for selected scans to check the tensions. I must say that the Pugin Extended Toolbox from TagLabs saved looooots of time for renaming the targets. Without it I would have do it all manually. For the next big project we will buy the full version for sure.

My PC:
Intel(R) Core(TM) i7-9700K CPU @ 3.60GHz
64GB RAM
NVIDIA GeForce GTX 1050
1TB SSD 970 EVO Plus NVMe M.2 2280
2TB HDD

Cheers
Maciej Banaszkiewicz
bdawood
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Re: registering large scan

Post by bdawood »

Thank you so much Maciej for your input, this is a huge project you did, thanks for sharing, this is quite helpful, I will make sure the lenses are clean all the time because it is a dusty area.
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