Support Colmap Export

General Feedback & Requests
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Hi there,
It would be great for RC to support the Colmap file format as an Export option. Would be very helpful to play with RC aligned components with NERFs/3d-gaussian-splatting.

This was requested ~1 year ago here but no update since, hence re-opening a feature request ticket.

Best,

2

Thank you for the idea, I added this to our feature request database.

4 Likes
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Thanks for getting back so quickly.
Out of curiosity, do you plan to open access to some of these feature/bugfixes requests on a public board somewhere?

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There is no answer for that question. I informed my colleagues about it and they will decide.

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Workflow described here in the meantime:

# Install Kapture
pip install kapture

# Bundler -> Kapture
py C:\Python310\Scripts\kapture_import_bundler.py -v debug -i dataset-bundler\bundle.out -l dataset-bundler\imagelist-local.lst -im dataset-bundler\images --image_transfer link_absolute -o dataset-kapture --add-reconstruction

# Kapture -> Colmap
py C:\Python310\Scripts\kapture_export_colmap.py -v debug -f -i dataset-kapture -db dataset-colmap\colmap.db --reconstruction dataset-colmap\reconstruction-txt

# Colmap txt to bin conversion
mkdir dataset-colmap\sparse\0
COLMAP.bat model_converter --input_path dataset-colmap\reconstruction-txt --output_path dataset-colmap\sparse\0 --output_type BIN
2 Likes
6

Hello,
I also vote for this export option. Or may be we could have directly gaussian splatting within RC :wink: ?

@Jonathan, thank you for this request and the detailed process.

Thanks
Ben

3 Likes
7

Hello,

@jochemla . I tried to use your scripts but I get errors (I’m not a python guy…).

I have some questions :

  • I assume that we need to export the image list from RC too and then rename the file imagelist.lst. Is it correct ?
  • Should all the images be stored in a subfolder (relative to the out file) called image ?
  • Should we use index.py in first sept then use the index.sh ?

Thanks for any precisions !

Ben

1 Like
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Hi Benny, your vote was added.

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  • 1
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mar.lor, your vote was added

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Please take into consideration that a lot of users that have been working with Gaussian Splatting, are switching to Metashape. They listened to their user requests, and provided an export solution in a short amount of time:

So far we have two problems, if we want to keep on working with Reality Capture:
(-) export camera positions (alignment) into Colmap compatible format
(-) export images as cropped without black bars:

2 Likes
12

mar.lor, forwarded this to my colleagues.

1 Like
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“Your creative suggestion has sparked our imagination, and we’re thrilled to add it to our feature request database. Your input is invaluable to us.”

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I fully endorse adding Colmap export to RC! It’s crucial for NERF/3D-Gaussian-splatting workflows. Please prioritize this feature request. :upside_down_face:

2 Likes
15

Your vote was added to the request.

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Hello Otrhan,

Any news about this request ?
As gaussian splatting and nerf are getting more interest, do you intend to implement colmap export?
The user community needs feebacks.
Thanks

Ben

1 Like
18
  • 1 it would be great to have this feature.
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19

That would be great feature ! +1

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+1 This would be great

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Seeking Colmap Export support in RealityCapture to import image alignment data into Jawset software for splat generation. Any updates on this integration? Thanks!

1 Like