5. The system of claim 4 , wherein the signature extractor further comprises a reconstruction error generator configured to produce a texture reconstruction error by modifying texture inside a shape.
5. The system of claim 4 , wherein the signature extractor further comprises a reconstruction error generator configured to produce a texture reconstruction error by modifying texture inside a shape. 6. The system of claim 5 , wherein the texture reconstruction error is based upon how accurately the face is aligned by the shape.