How to save obj?

[qiuyuzhao]

from synthesize_novel_poses_and_expressions get rgba and shaded_mesh and see the image. but how to convert to obj?

rgba, shaded_mesh = synthesize_novel_poses_and_expressions(expr=expr, pose=pose, image_size=(512, 512))
verts, faces, normals, values = marching_cubes(rgba[0, :3].detach().cpu().permute(1, 2, 0).numpy())
save_obj("rgb.obj",torch.tensor(verts.copy()), torch.tensor(faces.copy()))

I convert this way, but the result is not right

[yangqing-yq]

@qiuyuzhao have you figured that out?