SIGGRAPH 2013 TalkWe
explain how Rhythm & Hues's proprietary renderer was used to create
a photorealistic, stereoscopic rendition of Richard Parker, the
lifelike Bengal tiger featured in Ang Lee's Oscar-winning feature
SIGGRAPH 2011 TalkWe describe an unbiased noise reduction method for integrating incident radiance at a fixed position.
SIGGRAPH 2010 TalkWe
present several techniques for efficiently gathering diffuse and
specular reflection rays from strand-based fur geometry, recently put
into production at Rhythm & Hues.
SIGGRAPH 2009 Talk
enhance the Langlands & Mertens smoothing technique for
in order to produce more accurate shadow boundaries, and allow for
variation in mean free path.
SIGGRAPH 2008 Talk
Pismo is a technique for
smoothly blending among multiple shadow maps
created on the surface of an area light, in order to produce accurate
soft shadows. The result rivals the precision of ray-traced shadows at
a significantly lower cost.
SIGGRAPH 2007 Sketch
is a 2D motion blur technique, which
incorporates several heuristics to fill holes created by
hidden pixels that become visible during motion. It is used extensively
& Hues as a much faster and more flexible alternative to
We discuss modelling, rigging, animation,
dynamics, and rendering challenges encountered during the production of
the feature film The Chronicles of Narnia: The Lion, the Witch and the Wardrobe.
SIGGRAPH 2006 Sketch
We present a tracking technique that uses an occlusion-tested
texture-space camera projection technique called primitex to
an error metric, which drives rigging parameters. This method relies on
the fact that a properly tracked model has a
consistent texture projection over multiple frames of animation.
4-channel texture containing an average unoccluded
surface direction ("bent normal") and an average visibility value over
a hemisphere of directions around the surface normal ("ambient
occlusion"). We use visiblity maps for fast environment lookups into a
cosine-filtered environment texture, in order to approximate
environmental diffuse lighting.
Cats & Dogs,
while I cover the rendering.
It lays the foundation for my subsequent the hair rendering work.
primitive for efficiently rendering generalized cylinders. This serves
as the basis for my subsequent implementation of the hair rendering
pipeline at Rhythm & Hues.
Deep Learning technique to synthesize novel camera views from a sparse
set of inputs. This can be used to build stereoscopic views from
mono imagery, and also to smooth out animations by interpolating frames.
Internal Presentation (2014)Techniques
for generating different styles of animated painterly renderings from
still images. This incorporates a multi-scale approach for placing
paint droplets onto a virtual canvas, and a way to animate the droplets