You are cordially invited to attend our Computer Graphics and Visualization Seminar on Thursday, February 7, 2019, 15:45-17:45h, at EWI-Lecture hall Chip.
The program features the following two speakers:
Title: Projective Dynamics: Fusing Constraint Projections for Fast Simulation
Abstract: We present a new method for implicit time integration of physical systems. Our approach builds a bridge between nodal Finite Element methods and Position Based Dynamics, leading to a simple, efficient, robust, yet accurate solver that supports many different types of constraints. We propose specially designed energy potentials that can be solved efficiently using an alternating optimization approach. Inspired by continuum mechanics, we derive a set of continuum based potentials that can be efficiently incorporated within our solver. We demonstrate the generality and robustness of our approach in many different applications ranging from the simulation of solids,
cloths, and shells, to example-based simulation. Comparisons to Newton-based and Position Based Dynamics solvers highlight the benefits of our formulation.
Title: Inverse Diffusion Curves using Shape Optimization
Abstract: The inverse diffusion curve problem focuses on automatic creation of diffusion curve images that resemble user provided color fields. This problem is challenging since the 1D curves have a
nonlinear and global impact on resulting color fields via a partial differential equation (PDE). We introduce a new approach complementary to previous methods by optimizing curve geometry.
In particular, we propose a novel iterative algorithm based on the theory of shape derivatives. The resulting diffusion curves are clean and well-shaped, and the final image closely approximates
the input. Our method provides a user-controlled parameter to regularize curve complexity, and generalizes to handle input color fields represented in