Face Transformation

[THARUNESHWAR-369]

@burnmyletters @KupynOrest @t-martyniuk @NeelayS
Is there any way to replace smplx head with DAD-3DHeads.

SMPLX Head:

DAD-3DHead:

I tried by using DAD-3DHeads Flame Parameters (scale, translation, rotation) and using blender got lips, eyes, nose, ears vertices. And Then applying translation.

Here is the part of the code.

    neck_avg_pos = smplx_body_mesh.vertices[neck_vertices].mean(axis=0)

    # Assuming you have vertex indices for nose, left eye, and right eye in the DAD3d head:
    nose_vertices = dad3d_head_params["dad_nose"]
    neck_vertices = dad3d_head_params["dad_neck"]
    left_eye_vertices = dad3d_head_params["dad_left_eye"]
    right_eye_vertices = dad3d_head_params["dad_right_eye"]

    nose_avg_pos = dad3d_head_mesh.vertices[nose_vertices].mean(axis=0)
    left_eye_avg_pos = dad3d_head_mesh.vertices[left_eye_vertices].mean(axis=0)
    right_eye_avg_pos = dad3d_head_mesh.vertices[right_eye_vertices].mean(axis=0)
    dad_neck_avg_pos = dad3d_head_mesh.vertices[neck_vertices].mean(axis=0)

    dad3d_head_mesh.apply_translation(neck_avg_pos - dad_neck_avg_pos)

    # 4. Combine the meshes:
    combined_mesh = smplx_body_mesh + dad3d_head_mesh

And the combined_mesh output