Scan to BIM - General Inquiry

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dca.nmy
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Scan to BIM - General Inquiry

Post by dca.nmy »

Hello,

I work for an architecture firm that has been using Matterport scanners for reality capture. This has been used exclusively for spatial visualization & reference when modeling. We are looking to dive deeper into the world of reality capture, looking at Leica geo & NavVis products, to generate BIM in-house from high quality scans.
I am curious how people convert scans into digital models, Revit in particular. It seems to me that the process would work like tracing a picture, assembling each component of the building (walls, floors, MEP, HVAC & structure, etc..) within the point cloud scan, within Revit. Through some preliminary research I found this: https://a-scan2bim.github.io/ open-source plugin for Revit that automates the wall generation (80% of the modeling process according to their paper), or at least assists with the process by suggesting the next path of the wall. Fascinating stuff!
Are there any other widely known open-source or other plugins that people use for scan -> BIM in Revit?

Thank you
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Re: Scan to BIM - General Inquiry

Post by Jamesrye »

If you care to listen to my dulcet tones, I made a tutorial for beginners once!

youtu.be/4YtxuM_Rtg4
https://youtu.be/4YtxuM_Rtg4?si=OnpSYlEfKs0R8Yy2
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Re: Scan to BIM - General Inquiry

Post by GCFdesign »

It is tracing, whether that be 2D or 3D within Revit.

The primary problem with as-builts, whether that be Revit or other software and with respect to 3D, is the fact that doors and windows are so different across a single building, let alone across a variety of projects.

Having sound Revit skills is key, together with the adaptability to create solutions to every element you are attempting to reflect.

Most plugins are next to useless and are certainly not consistent enough when time is tight.
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Re: Scan to BIM - General Inquiry

Post by dca.nmy »

Jamesrye wrote: Fri Jun 14, 2024 9:25 am If you care to listen to my dulcet tones, I made a tutorial for beginners once!

youtu.be/4YtxuM_Rtg4
https://youtu.be/4YtxuM_Rtg4?si=OnpSYlEfKs0R8Yy2
Hello,
Thank you for the tutorial link, it was helpful. I have a question regarding the placement / positioning of the point cloud in Revit as you have done it in your video. At 02:38 in part 3 of your series, you "capture a point XYZ from the point cloud, taken from the corner of the building in AutoCAD". How exactly are you capturing this coordinate? Do you import the ReCap file into AutoCAD to find the coordinate? Please provide some clarification on this, it would be greatly appreciated!

Thank you.
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Re: Scan to BIM - General Inquiry

Post by GCFdesign »

Determine your E,N within Autocad.

I create a circle in a suitable location, import DWG into Revit. Locate DWG centre of circle upon Revit 0,0,0. Adopt DWG coordinates by selecting DWG. Import point cloud data ensuring positioning is to coordinates ✔️
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Re: Scan to BIM - General Inquiry

Post by gord »

dca.nmy wrote: Fri Jun 14, 2024 1:09 am
I work for an architecture firm that has been using Matterport scanners for reality capture. This has been used exclusively for spatial visualization & reference when modeling. ...

I've recently been modelling in 3D directly over 360 pano scans ... if alignment is good, you can actually get cm accurate measurements from high quality panoramas.

Some screenshots / notes here : https://pho.tiyuti.com/list/rx39djtspp [ tap on thumbnails to see larger image ]



Thanks to Will of Pisgah360.com for sharing this nice dataset / matterport capture of Asheville Museum foyer, NC
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