The convention of camera poses

[raynehe]

Hi! Thanks for the wonderful work!

Sorry to bother you. I'm trying to use this dataset with 3D Gaussian Splatting, and I'm struggling with the convention of camera poses.

Could you explain about why in this line the camera position is multiplied with 4? Is it has to do with the resizing of the image?

Also, could you inform me about the convention of the OpenIllumination OLAT dataset, such as:

• Is it following OpenGL/Blender convention (Y up, Z back)?
• If not, how could I change it to OpenGL/Blender convention?
• What should I edit about the camera parameters if I want to resize the image into a new folder, and to read the resized image directly?

Sorry again for the bother, and I'm looking forward to your reply!