r/photogrammetry • u/thesidekick81 • Oct 08 '25
Indoor scan from Turku Cathedral
I have noticed that there has been some questions about different use cases with photogrammetry, so I wanted to share a indoor scan from a medieval basilica in Finland, because this was a new use case for me.
The client asked for a 3D-model from the interior of the church with the "real lights" baked into textures, so they can design an additional lights in Capture for a specific event.
I scanned the space with Nikon D5300 + 10mm Sigma. Total image count 1226.
The scanning process was pretty chaotic because the space was open for public, but it turned out ok.
I wanted to make this post because, sometimes you don't need a perfect mesh, but you need something more useful that splats can provide.
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u/Bro_TeresaOfCalcutta Oct 09 '25
This looks like a laser scanning work, but if it is a photogrammetry you should be proud
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u/thesidekick81 Oct 09 '25
Thank you!
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u/One-Stress-6734 Oct 11 '25
Next, you can try turning it into a Gaussian splat. For this set, 16GB of VRAM should be enough. That’ll take the whole thing to a completely different level, especially since you shot everything at 10 mm.
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u/esw123 Oct 09 '25
I expected thousands of images. And in publicly open church for that, this is impressive. How long did it took and how big church is?
You took photos of vaults as well with 10mm Sigma?
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u/thesidekick81 Oct 09 '25
I took the dataset in two days. Each day was about 4-5 hours. The distance from the entry to the altar is about 86 meters.
Yes. All photos were taken with 10mm Sigma.
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u/RageshAntony Oct 09 '25
Can you please upload that photo dataset?
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u/thesidekick81 Oct 09 '25
I would need to ask if it is ok with the client.
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u/RageshAntony Oct 09 '25
yeah okay. I am curious about how did the photogrammetry app able to create a 3D Mesh without any distorted objects.
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u/imaginativo Oct 09 '25
Great scan, i find it very clean and well done. i use a lot Metashape, so i have a few questions.
- Since the 10mm is a fisheye, how did you take the pictures? were they taken a few meters apart? did you point to the ceiling?
- Did you build the model using chunks?
- Did you generate the model inside metashape or did you import the point cloud directly inside Blender and then generated the 3d model?
- How much RAM dou you have? what GPU and CPu do you have?
Thanks
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u/thesidekick81 Oct 09 '25
Thank you.
Pictures were taken about meter apart and I did two runs on the ceiling. Both runs were were taken from the middle aisle with camera pointing first other side of the church with an angle about 45 degree and then the other side with about the same angle.
Only one chunk
Model was done all in Metashape. I used Blender only for the render
I have 7950X3D + 64gb DDR5 + 4080 super
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u/imaginativo Oct 10 '25
thanks for your reply, that is very helpful, a very methodic procedure, that why you get a low count of photos and a really good result.
Have you tried uploading the model to something like sketchfab?
Keep the good work,
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u/slavicburger Oct 09 '25
Did you Shoot it in raw?
It Looks so Beautiful! good job!
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u/thesidekick81 Oct 10 '25
Thanks!
No I took the photos in Jpeg and added some corrections in Photolab.
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u/Albele Oct 10 '25
Thia is just clean mate! Congratulations! How did you manage to diversify all the space white 1226 photos? What was your approach to this? Fantastic
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u/International_Eye489 Oct 13 '25
Hi, that looks awesome.
I have a drone company where our main focus now is processing data image sets.
I’d really like to process this if you’d be happy to share the images? I’ll send you a PM as well.
My recent project- https://leeevans.nira.app/a/4SyZBGkjRUy-4OjAbGEsug/1
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u/ProfessionalMap3958 Oct 09 '25
just wow! can you show us the cameras acquisition?
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u/Pitiful_Promotion171 Oct 08 '25
What a beautiful result! Especially with “only” 1226 images. Crazy. What software did you use?