Gaussian Splatting Georeferenced

Cesium ion
1

Hi everyone,

I recently watched a video “3D Gaussian Splatting with 3D Tiles and glTF“ where I saw a Gsplat (I think georeferenced) being used in Cesium. I wanted to replicate this using my own Gaussian Splatting .ply file, but when I try to upload it, I get the message:

“Tileset location has not been set.”

Do I need to do an extra step to have my model georeferenced or at least scaled to the right dimensions? I tried using COLMAP to align the model with the GPS coordinates from the drone images I captured, but I’m still seeing the same issue.

I’m new to this field, so any guidance on what I might be missing would be really appreciated. Thanks in advance!

2

This message itself does not necessarily indicate an error. There is no standardized way of encoding any geo-information/geo-location in PLY data.

You should be able to adjust the location of the resulting tileset, by clicking on “Adjust Tileset Location” (also see Set Location for Data Uploaded to Cesium ion – Cesium )

If this doesn’t work, then someone might be able to investigate this further if you post the asset ID.

3

Honestly Cesium ion is relying too much on adjust tileset which unfortunately does not work for TM datasets with scale factors. Not possible to correctly place, scale and rotate such data.

4

Thank you! I completely missed the “Adjust Tileset Location” button. I was able to geolocate it by simply setting the coordinates of the first image in the dataset without rotation or scaling needed.