Digital Facial Engraving
Author(s): Victor Ostromoukhov.
Proceedings: SIGGRAPH 99,
1999.
[BibTeX] 
Abstract:
This contribution introduces the basic techniques for digital facial
engraving, which imitates traditional copperplate engraving.
Inspired by traditional techniques, we first establish a set of basic
rules thanks to which separate engraving layers are built on the top
of the original photo. Separate layers are merged according to simple
merging rules and according to range shift/scale masks specially
introduced for this purpose. We illustrate the introduced
technique by a set of black/white and color engravings, showing
different features such as engraving-specific image enhancements,
mixing different regular engraving lines with mezzotint, irregular
perturbations of engraving lines etc. We introduce the notion of
engraving style which comprises a set of separate engraving layers
together with a set of associated range shift/scale masks. The
engraving style helps to port the look and feel of one engraving to
another. Once different libraries of pre-defined mappable engraving
styles and an appropriate user interface are added to the basic
system, producing a decent gravure starting from a simple digital
photo will be a matter of seconds. The engraving technique
described in this contribution opens new perspectives for digital
art, adding unprecedented power and precision to the engraver’s
work.