I generated a Gaussian Splat from a video using iTwin Capture.
The result displays correctly inside iTwin Capture, but after uploading the original .ply file to Cesium ion with “Gaussian splats” enabled, the asset appears severely broken in the Cesium ion Preview itself.
The splats are scattered and blurred, and the reconstructed terrain/structure cannot be recognized.
I have not applied any Tileset Location adjustment, rotation, scaling, or CesiumJS modelMatrix transformation. The PLY is not georeferenced because it was generated from video footage.
I tested with Gaussian splats enabled. With Draco compression enabled, the asset renders in a broken state. With Draco compression disabled, nothing is visible.
The source PLY is approximately 1.23 GiB. It displays correctly in iTwin Capture.
Could this be related to the known regression / rendering issue for Gaussian splats created from PLY files in Cesium ion?
Asset ID: [4976430]
Cesium ion Preview screenshot:
Hello honjo,
The .ply conversion to 3D Tiles from Cesium is currently different than what is done with photo reconstruction on iTwin Capture, so the results are not the same.
If you would like to visualize the same workflow from iTwin Capture, I would suggest exporting the 3D Tiles then uploading those directly into Cesium ion.