3. The system of claim 2 further including a second update element disposed to evaluate the set of estimated scene features and the learning rule and update a second set of parameters used to generate the set of estimated scene features.
3. The system of claim 2 further including a second update element disposed to evaluate the set of estimated scene features and the learning rule and update a second set of parameters used to generate the set of estimated scene features. 4. The system of claim 3 , wherein at least one 3D scene comprises a virtual environment.