Lena Petrovic, Mark Henne, John Anderson
Abstract:
Hair is one of the crucial elements in representing believable digital
humans. It is one of the most challenging elements, too, due to the
large number of hairs on a human head, their length, and their complex
interactions. Hair appearance, in rendering and simulation, is
dominated by collective properties, yet most of the current approaches
model individual hairs. In this paper we build on the existing
approaches to illumination and simulation by introducing a volumetric
representation of hair which allows us to efficiently model collective
properties of hair. We use this volumetric representation of hair to
describe hair response to illumination, hair to hair collisions, and
to subtly direct simulations of hair. Our method produces realistic
results for different types of hair colors and styles and has been
used in a production environment.
Paper (PDF)
Additional materials: [clip1.mp4], [clip2.mp4], [clip3.mp4], [clip4.mp4], [clip5.mp4], [clip6.mp4]
Available as Pixar Technical Memo #06-08