Why to normalize coordinates of objects when rendering?

[LeroyChou]

Hello, I want to express my gratitude for your excellent work.

I recently observed that you normalize the objects' coordinates using offset and scale in this line. Why not use the original coordinates? I would greatly appreciate it if you could provide the rationale behind this decision. Thank you very much.

[rasmushaugaard]

Hi there The normalized coordinates serve as input to the key model. Normalizing ensures that the scale of the inputs is independent of the scale of the CAD model.

[LeroyChou]

Given that each CAD model utilizes a separate MLP, would it be neccessary to make sure that the input is independent of the scale?

[rasmushaugaard]

Scaling of inputs to neural networks can matter. But yes, it might still work :)