How to Generate sfm_scene.json for other Dataset

[irisfreesiri]

I would like to use a different dataset from the following link: Gaussian Grouping - Figurines. However, I encountered an issue and would appreciate some help.

The structure of the dataset is shown in the image below, and it does not contain an sfm_scene.json file. Does anyone know how to generate this file?

Thank you very much for your assistance!