The models are all white models

Cesium for Unreal
1

The UE5 does not support loaded tilt photography maps, whereas CesiumLab handles them without any issues. I have been using version 1.15.1 of Cesium for Unreal because the newer versions are unable to load tilt photography.

Cesium
Cesium725×436 117 KB

white
white970×525 194 KB

2

I don’t understand what you’re saying. Certainly Cesium for Unreal supports photogrammetry (which I think is the more common name we would use for what you called tilt photography). What actual problem are you seeing?

Also, just for the record, despite the trademark violation, CesiumLab is an entirely separate and unaffiliated company from Cesium.

3

This is an error, and photogrammetry was imported into Cesium for unreal. Originally, Photogrammetry was displayed normally on the web side of Cesium, but when Cesium for unreal, there would be no shader and it would become a white model

5

Failed resolving external glTF buffers from http：//…/Tile_+037_+031/Tile_+037_+031_L16_00.b3dm:

  • Image not of any known type, or corrupt
  • Declared image MIME Type: image/crn
    LogCesium: Warning: [2023-12-01 15:29:37.949] [warning] [GltfContent.cpp:105] Warning when resolving external gltf buffers from http://…/model/wjlight/Tile_+037_+031/Tile_+037_+031_L16_00.b3dm:
  • Attribute accessor.count doesn’t match with number of decoded Draco vertices.
  • Attribute accessor.count doesn’t match with number of decoded Draco vertices.
6

And only Cesium for unreal 1.15.1 and below can be imported, later versions are unable to import photogrammetry models,I don’t know why.

7

I’d start with that first error:

Image not of any known type, or corrupt
Declared image MIME Type: image/crn`.

I don’t know what an image/crn is, but that’s definitely not an image format that Cesium for Unreal supports. Perhaps older versions ignored the MIME type and just tried to load the image, and it worked because it’s actually a JPG or PNG or something. But this is still an error in the tileset and should be fixed at that level.

8

Thank you very much for your answer. The problem has been solved. It is because this is an unsupported picture format that there is no material. CRN is a photo format developed by a Chinese photogrammetry model company.