Journal ArticleDOI
TransCut: Interactive Rendering of Translucent Cutouts
TLDR
TransCut provides a novel visual effect for heterogeneous translucent objects undergoing fracturing and cutting operations and is believed to be the first to provide this effect on the basis of the diffusion equation over a tetrahedral mesh.Abstract:
We present TransCut, a technique for interactive rendering of translucent objects undergoing fracturing and cutting operations. As the object is fractured or cut open, the user can directly examine and intuitively understand the complex translucent interior, as well as edit material properties through painting on cross sections and recombining the broken pieces-all with immediate and realistic visual feedback. This new mode of interaction with translucent volumes is made possible with two technical contributions. The first is a novel solver for the diffusion equation (DE) over a tetrahedral mesh that produces high-quality results comparable to the state-of-art finite element method (FEM) of Arbree et al. [1] but at substantially higher speeds. This accuracy and efficiency is obtained by computing the discrete divergences of the diffusion equation and constructing the DE matrix using analytic formulas derived for linear finite elements. The second contribution is a multiresolution algorithm to significantly accelerate our DE solver while adapting to the frequent changes in topological structure of dynamic objects. The entire multiresolution DE solver is highly parallel and easily implemented on the GPU. We believe TransCut provides a novel visual effect for heterogeneous translucent objects undergoing fracturing and cutting operations.read more
Citations
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DissertationDOI
Algorithms and interfaces for real-time deformation of 2D and 3D shapes
TL;DR: This thesis investigates computer algorithms and user interfaces which assist in the process of deforming raster images, vector graphics, geometric models and animated characters in real time, and aims at skinning weight computation for deforming shapes in real-time using linear blend skinning (LBS).
Journal ArticleDOI
Separable Subsurface Scattering
Jorge Jimenez,Jorge Jimenez,Károly Zsolnai,Adrian Jarabo,Christian Freude,Thomas Auzinger,Xian-Chun Wu,Javier von der Pahlen,Michael Wimmer,Diego Gutierrez +9 more
TL;DR: Two real‐time models for simulating subsurface scattering for a large variety of translucent materials, which need under 0.5 ms per frame to execute, are proposed, reducing both execution time and memory consumption, while delivering results comparable to techniques with higher cost.
Journal ArticleDOI
Accurate Translucent Material Rendering under Spherical Gaussian Lights
TL;DR: This paper presents a new algorithm for accurate rendering of translucent materials under Spherical Gaussian (SG) lights that builds upon the quantized‐diffusion BSSRDF model recently introduced in [ dI11 ].
Proceedings ArticleDOI
Separable subsurface scattering
TL;DR: This demo shows a technique to simulate subsurface scattering for human skin that runs in just over one millisecond per frame, making it a practical option for even the most challenging game scenarios.
Journal ArticleDOI
Consistent volumetric discretizations inside self-intersecting surfaces
TL;DR: This work proposes an algorithm that produces a tetrahedral mesh that overlaps itself consistently with the self‐intersections in the input surface, which enables volumetric processing onSelf‐intersecting models and demonstrates the effectiveness of the method with applications to automatic skinning weight computation, physically based simulation and geodesic distance computation.
References
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Book
Wave propagation and scattering in random media
TL;DR: This IEEE Classic Reissue presents a unified introduction to the fundamental theories and applications of wave propagation and scattering in random media and is expressly designed for engineers and scientists who have an interest in optical, microwave, or acoustic wave propagate and scattering.
Book ChapterDOI
Discrete Differential-Geometry Operators for Triangulated 2-Manifolds
TL;DR: A unified and consistent set of flexible tools to approximate important geometric attributes, including normal vectors and curvatures on arbitrary triangle meshes, using averaging Voronoi cells and the mixed Finite-Element/Finite-Volume method is proposed.
Journal ArticleDOI
Recent advances in diffuse optical imaging.
TL;DR: The current state-of-the-art of diffuse optical imaging is reviewed, which is an emerging technique for functional imaging of biological tissue and recent work on in vivo applications including imaging the breast and brain is reviewed.
Proceedings ArticleDOI
A practical model for subsurface light transport
TL;DR: A simple model for subsurface light transport in translucent materials that enables efficient simulation of effects that BRDF models cannot capture and a new, rapid image-based measurement technique for determining the optical properties of translucent materials.
Proceedings ArticleDOI
Graphical modeling and animation of ductile fracture
TL;DR: This video demonstrates a method for realistically animating ductile fracture in common solid materials such as plastics and metals that can generate realistic motion for a much wider range of materials than could be realized with a purely brittle model.