regarding custom body smpl

[dhruvrajsaharan]

hi conallwang, loved your mesh processing stuff in flame2smplx, my question is given a custom smplx model body, I want to fit the flame head to it, so, this custom smplx body already has some betas and poses, I want them to be retained except for the face shape and expression, is it possible, if so how?

[dhruvrajsaharan]

also I am new to github, and english is not my first language, so correct me if i am wrong

[conallwang]

Hi, @dhruvrajsaharan

I'm not sure that I understand your question correctly. So I'll rewrite your question and you can check if it's what you want to describe.

1. You want to obtain a FLAME model which aligns with the head of your given custom smplx model.
2. During the above process, you want to keep the parameters of your smplx model as much as possible.

For the first goal, you can just use this repo to fit a FLAME model to a given scan mesh (i.e., a given smplx mesh in your case).

For the second goal, I don't think the parameters of the smplx model can be transfered to the FLAME model directly, although MichaelJBlack says they can (link). Because I have tried to just copy the expression parameters and jaw pose of a FLAME 2023 model to a smplx model, I cannot achieve the same expressions on the smplx mesh as those on the FLAME mesh.

Hope these helps :)
Cong