Results 71 to 80 of about 2,417 (212)
A Real‐Time Multi‐Scale Neural Representation for Complex Surface Reflectance
Computer Graphics Forum, EarlyView.Abstract Recent machine learning methods have significantly advanced the state of the art in the classic problem of representing surface appearance over angle, space, and scale. The models tend, however, to be relatively heavy compared to traditional fixed‐function representations, making real‐time application challenging.
Heikki Timonen +2 more
wiley +1 more source
Heavy Baryon Chiral Perturbation Theory and Reparametrization Invariance [PDF]
, 2011 [[abstract]]We examine the constraints imposed by reparametrization invariance on heavy-baryon chiral perturbation theory (HBChPT). We study the case of 3 flavors and consider both the strong and weak ($|\Delta S| =1$) interaction sector.
J. W. Bos;D. Chang;S. C. Lee;Y. C. Lin;H. H. Shih
core
Volume Quantization with Flexible Singularities for Hexahedral Meshing
Computer Graphics Forum, EarlyView.Abstract We present a novel algorithm for quantization and subsequent hexahedral mesh generation from seamless volumetric maps. Quantization is the process of choosing integers that represent the numbers of hexahedral elements to be placed in each region of the volume, and transforming the seamless map into an integer‐grid map matching that choice ...
H. Brückler, M. Campen
wiley +1 more source
How Does Neural Network Reparametrization Improve Geophysical Inversion?
Journal of Geophysical Research: Machine Learning and ComputationFull waveform inversion (FWI) is a high‐resolution seismic inversion technique and great efforts have been made to mitigate the multi‐solution problem, such as the traditional total variation (TV) regularization. Different from traditional regularization,
Yuping Wu, Jianwei Ma
doaj +1 more source
JT gravity from holographic reduction of 3D asymptotically flat spacetime
Journal of High Energy Physics, 2023 We attempt to understand the CFT1 structure underlying (2+1)D gravity in flat spacetime via dimensional reduction. We observe that under superrotation, the hyperbolic (and dS2) slices of flat spacetime transform to asymptotically (A)dS2 slices.
Arindam Bhattacharjee, Muktajyoti Saha
doaj +1 more source
Computer Graphics Forum, EarlyView.Abstract Cutout animation is one of the earliest forms of animation, and to this day remains a popular technique featured in numerous films including Monty Python and South Park series. Most computer animation systems, however, focus on different styles, including cel animation, making cutout animation somewhat underexplored.
Ivan Puhachov +3 more
wiley +1 more source
Reparametrization invariant norms
, 2020 This paper explores the concept of reparametrization invariant norm (RPI-norm) for C 1 functions that vanish at −∞ and whose derivative has compact support, such as C 1 c functions.
P Frosini, C Landi
core
, 2012 We perform a class of nonlinear extensions of the reparametrization algebra at arbitrary dimensions. Our extended algebras reproduce in the one-dimensional limit the well-known W-ones. We point out the existence of a family of reparametrization invariant
BANDELLONI, GIUSEPPE
core +1 more source
Anchor Flow Maps: Efficient Sampling and Approximation of the Entire Flow Map
Computer Graphics Forum, EarlyView.Abstract Flow maps are a fundamental concept for the visualization and analysis of time‐dependent flows. A common approach is to apply sampling and reconstruction – which comes with a number of problems: flow maps are high‐dimensional functions with locally large gradients which makes approximations very challenging.
D. Stelter +3 more
wiley +1 more source
Fermionic localization of the schwarzian theory
Journal of High Energy Physics, 2017 The SYK model is a quantum mechanical model that has been proposed to be holographically dual to a 1 + 1-dimensional model of a quantum black hole. An emergent “gravitational” mode of this model is governed by an unusual action that has been called the ...
Douglas Stanford, Edward Witten
doaj +1 more source