  Sculptors often deviate from geometric accuracy in order to enhance the
appearance of their sculpture. These subtle stylizations may emphasize anatomy,
draw the viewer's focus to characteristic features of the subject, or symbolize
textures that might not be accurately reproduced in a particular sculptural
medium, while still retaining fidelity to the unique proportions of an
individual. In this work we demonstrate an interactive system for enhancing
face geometry using a class of stylizations based on visual decomposition into
abstract semantic regions, which we call sculptural abstraction. We propose an
interactive two-scale optimization framework for stylization based on
sculptural abstraction, allowing real-time adjustment of both global and local
parameters. We demonstrate this system's effectiveness in enhancing physical 3D
prints of scans from various sources.
