BYU

Abstract by Samuel Giraud-Carrier

Personal Infomation


Presenter's Name

Samuel Giraud-Carrier

Degree Level

Masters

Abstract Infomation


Department

Computer Science

Faculty Advisor

Seth Holladay

Title

Retiming Smoke Simulation using Machine Learning

Abstract

Art-directability is a crucial aspect of creating aesthetically pleasing
visual effects that help tell stories. 
A particularly common method of art direction is the retiming of a simulation.
Unfortunately, the means of retiming an existing simulation sequence which
preserves the desired shapes is an ill-defined problem. Naively interpolating
values between frames leads to visual artifacts. Due to the difficulty in
formulating a proper interpolation method we elect to use a machine learning
approach to approximate this function. Our model is based on the ODE-net 
structure and reproduces a set of desired time samples (in
our case equivalent to time steps) that achieves the desired new sequence speed, based on training from frames in the 
original sequence. The flexibility 
of the updated sequences' duration provided
by the time samples input makes this a visually effective and intuitively directable way to retime a simulation.