| Semantics of Line Drawings |
| Jocelyn Ireson-Paine |
| www.j-paine.org/lds/intro.html |
Lines often denote edges and rims
Probably most lines represent edges and "rims": the places where the line
of sight
grazes the boundary of an object:
We get a wealth of information about the 3-D geometry from these lines
and the relation between them. This is
very well understood: see
Visual Intelligence: How We Create What We See
by Donald D. Hoffman, from which the image comes. There is a summary in
"Donald Hoffman's Rules of Visual Intelligence".
A more recent explanation, concerned mainly with
line drawings rather than images in general, is
Part
III of
Doug DeCarlo's "Line Drawings and Perception"
SIGGRAPH 2005 Course Notes.
