Texturing Fluids
No Texture |
Textured Lava 1 |
Textured Lava 2 |
We present a novel technique for synthesizing
textures over dynamically changing fluid surfaces. We use both image
textures as well as bump maps as example inputs. Image textures can
enhance rendering of the fluid by imparting novel realistic appearance to
it, whereas bump maps enable the generation of complex micro-structures on
the surface of the fluid that may be very difficult to synthesize using
simulation. To generate temporally coherent textures over a fluid
sequence, we transport texture information,
i.e. color and local orientation, between fluid free surfaces
from one time step to the next. This
is accomplished by extending the texture information from the
first fluid surface to the 3D fluid domain, advecting this information within
the fluid domain along the fluid velocity field for one
time step, and interpolating it back onto
the second surface -- this operation, in part, uses
a novel vector advection technique for transporting orientation
vectors. We then refine the transported texture
by performing texture synthesis over the second surface using our
`surface texture optimization algorithm, which keeps
the synthesized texture visually similar to the input texture and
temporally coherent with the transported one. We demonstrate our
novel algorithm for texture synthesis on dynamically evolving fluid
surfaces in several challenging scenarios.
