The Template Method pattern defines the skeleton of an algorithm in a base class, using abstract methods and overriding to defer individual details to child classes.

It shows how to abstract static and dynamic structures of the smoke skeleton from hand drawn series and, based on those structures, reproduce smoke skein and smoke puffs with proper rendering models.

This paper uses the operator of mathematical morphology to abstract image skeleton and carries out the matching of moulding board according to the skeleton angular point of image.