Setting expression in Python

[Fivetuple]

Hi,

How do I set the facial expression using Python if the fit_shape_and_pose function does not have a blendshape_coefficients argument?

The following argument types are supported:
1. (morphable_model: eos.morphablemodel.MorphableModel, landmarks: List[eos.core.Landmark], landmark_mapper: eos.core.LandmarkMapper, image_width: int, image_height: int, edge_topology: eos.morphablemodel.EdgeTopology, contour_landmarks: eos.fitting.ContourLandmarks, model_contour: eos.fitting.ModelContour, num_iterations: int = 5, num_shape_coefficients_to_fit: Optional[int] = None, lambda_identity: float = 30.0, num_expression_coefficients_to_fit: Optional[int] = None, lambda_expressions: Optional[float] = 30.0) -> Tuple[eos.core.Mesh, eos.fitting.RenderingParameters, List[float], List[float]]

[patrikhuber]

Hi,

fit_shape_and_pose(...) estimates face shape (identity & expression), so you can't set it there. The expression coefficients are a return parameter of that function.

[ArisTing]

Hi,
I want to use starting values of expression coefficients in fitting. So can I overload the fit_shape_and_pose(...) function to set starting values for them? But how to overload in Python?

[patrikhuber]

Hi @ArisTing,

I would suggest that you have a look at pybind11's documentation. It should be easy to add the function to the Python bindings with the parameters that you need. Pybind11 also supports optional and default arguments.

[kanonet]

Hi @ArisTing,
what you asked was added to my fork of eos, see the py_bindings branch: https://github.com/kanonet/eos/tree/py_bindings maybe you can use this changes for your project?
Once @patrikhuber reviews my other PRs I plan to also suggest my pybind additions to get accepted here.