In order to produce convincing renders of woven cloth, it is not only necessary to properly simulate the physics of cloth, but also its texture. Because cloth often consists of very specular fibers, exhibits both smalland large-scale detail, and is modulated by view and light directions in an unusual manner, it is very hard to simulate with simple texture maps. Moreover, it is currently infeasi...

We introduce a novel strategy for cosmological Boltzmann codes leading to an increase in speed by a factor of ∼ 30 for small scale Fourier modes. We (re-)investigate the tight coupling approximation and obtain analytic formulae including the octupoles of photon intensity and polarization. Numerically, these results reach optimal precision. Damping rapid oscillations of small scale modes at late...

We study the nonequilibrium phase transition in a model for epidemic spreading on scale-free networks. The model consists of two particle species A and B, and the coupling between them is taken to be asymmetric; A induces B while B suppresses A. This model describes the spreading of an epidemic on networks equipped with a reactive immune system. We present analytic results on the phase diagram ...

In this paper, we propose a method for detecting patterns of interest in vector fields. Our method detects patterns in a scaleand rotation-invariant manner. It works by approximating the vector-field data locally using a Laurent polynomial weighted by radial basis functions. The proposed representation is able to model both analytic and non-analytic flow fields. Invariance to scale and rotation...

Scale is a widely used notion in medical image analysis that evolved in the form of scale-space theory where the key idea is to represent and analyze an image at various resolutions. Recently, a notion of local morphometric scale referred to as “tensor scale” was introduced using an ellipsoidal model that yields a unified representation of structure size, orientation and anisotropy. In the prev...