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Precomputed Acoustic Transfer: Output-sensitive, accurate sound generation for geometrically complex vibration sources

by Doug L. James, Jernej Barbic, Dinesh K. Pai - ACM Transactions on Graphics (SIGGRAPH , 2006
"... Simulating sounds produced by realistic vibrating objects is challenging because sound radiation involves complex diffraction and interreflection effects that are very perceptible and important. These wave phenomena are well understood, but have been largely ignored in computer graphics due to the h ..."
Abstract - Cited by 46 (9 self) - Add to MetaCart
Simulating sounds produced by realistic vibrating objects is challenging because sound radiation involves complex diffraction and interreflection effects that are very perceptible and important. These wave phenomena are well understood, but have been largely ignored in computer graphics due to the high cost and complexity of computing them at audio rates.

Pre-computing geometry-based reverberation effects for games

by Nicolas Tsingos
"... Current video games either pre-render reverberation effects into the sound effects or implement them at run-time using artificial reverberation filters. While interactive geometrical approaches can be used for more accurate acoustical modeling, the increased authoring complexity and the additional c ..."
Abstract - Cited by 6 (0 self) - Add to MetaCart
cost of geometrical calculations still appears to overshadow their potential benefits. This paper presents solutions to integrate off-line geometrical acoustic modeling in game environments. By pre-computing image-source gradients for early reflections and directional decay profiles, we can generate

An Algorithm of State-Space Precomputation Allowing Non-linear Haptic Deformation Modelling Using Finite Element Method

by Igor Peterlík, Luděk Matyska
"... After presenting the mathematical background of modelling elastic deformations together with finite element formulation, we propose a new algorithm allowing haptic interaction with soft tissues having both non-linear geometric and physical properties. The algorithm consists of two phases — first the ..."
Abstract - Cited by 2 (2 self) - Add to MetaCart
After presenting the mathematical background of modelling elastic deformations together with finite element formulation, we propose a new algorithm allowing haptic interaction with soft tissues having both non-linear geometric and physical properties. The algorithm consists of two phases — first

Towards Reactive Whole-Body Motion Planning in Cluttered Environments by Precomputing Feasible Motion Spaces

by Andreas Orthey, Olivier Stasse
"... Abstract — To solve complex whole-body motion planning problems in near real-time, we think it essentials to precompute as much information as possible, including our intended move-ments and how they affect the geometrical reasoning process. In this paper, we focus on the precomputation of the feasi ..."
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Abstract — To solve complex whole-body motion planning problems in near real-time, we think it essentials to precompute as much information as possible, including our intended move-ments and how they affect the geometrical reasoning process. In this paper, we focus on the precomputation

Geometric Speed-Up Techniques for Finding Shortest Paths in Large Sparse Graphs

by Dorothea Wagner, Thomas Willhalm , 2003
"... In this paper, we consider Dijkstra's algorithm for the single source single target shortest paths problem in large sparse graphs. The goal is to reduce the response time for online queries by using precomputed information. For the result of the preprocessing, we admit at most linear space. ..."
Abstract - Cited by 59 (15 self) - Add to MetaCart
In this paper, we consider Dijkstra's algorithm for the single source single target shortest paths problem in large sparse graphs. The goal is to reduce the response time for online queries by using precomputed information. For the result of the preprocessing, we admit at most linear space

Geometric Shortest Path Containers

by Dorothea Wagner, Thomas Willhalm, Christos Zaroliagis , 2004
"... In this paper, we consider Dijkstra's algorithm for the single source single target shortest path problem in large sparse graphs. The goal is to reduce the response time for on-line queries by using precomputed information. Due to the size of the graph, preprocessing space requirements can b ..."
Abstract - Cited by 2 (1 self) - Add to MetaCart
In this paper, we consider Dijkstra's algorithm for the single source single target shortest path problem in large sparse graphs. The goal is to reduce the response time for on-line queries by using precomputed information. Due to the size of the graph, preprocessing space requirements can

Groupwise Geometric and Photometric Direct Image Registration

by Adrien Bartoli - Proc. British Machine Vision Conf , 2006
"... Abstract—Image registration consists of estimating geometric and photometric transformations that align two images as best possible. The direct approach consists of minimizing the discrepancy in the intensity or color of the pixels. The inverse compositional algorithm has been recently proposed by B ..."
Abstract - Cited by 32 (1 self) - Add to MetaCart
by Baker et al. for the direct estimation of groupwise geometric transformations. It is efficient in that it performs several computationally expensive calculations at a precomputation phase. Photometric transformations act on the value of the pixels. They account for effects such as lighting change

A Single-Query Bi-Directional Probabilistic Roadmap Planner with Lazy Collision Checking

by Gildardo Sánchez, Jean-claude Latombe , 2001
"... This paper describes a nev probabilistic roadmap (PRM) path planner that is: (1) single-query instead of pre-computing a roadmap covering the entire free space, it uses the tvo input query configurations as seeds to explore as little space as possible; (2) hi-directional it explores the robotis free ..."
Abstract - Cited by 120 (4 self) - Add to MetaCart
This paper describes a nev probabilistic roadmap (PRM) path planner that is: (1) single-query instead of pre-computing a roadmap covering the entire free space, it uses the tvo input query configurations as seeds to explore as little space as possible; (2) hi-directional it explores the robotis

Affine Matching With Bounded Sensor Error: A Study of Geometric Hashing and Alignment

by W. Eric L. Grimson, Daniel P. Huttenlocher, David W. Jacobs , 1991
"... Affine transformations of the plane have been used in a number of model-based recognition systems, in order to approximate the effects of perspective projection. The mathematics underlying these methods is for exact data, where there is no positional uncertainty in the measurement of feature points ..."
Abstract - Cited by 50 (5 self) - Add to MetaCart
coordinate system. This is problematic for the geometric hashing method, because it means that the precomputed lookup table used by that method is not correct when there is positional uncertainty in the sensor data. We analyze the effect that this has on the probability that the geometric hashing method

Real-time subspace integration for St. Venant-Kirchhoff deformable models

by Jernej Barbic, Doug James - ACM Transactions on Graphics , 2005
"... In this paper, we present an approach for fast subspace integration of reduced-coordinate nonlinear deformable models that is suitable for interactive applications in computer graphics and haptics. Our approach exploits dimensional model reduction to build reduced-coordinate deformable models for ob ..."
Abstract - Cited by 121 (13 self) - Add to MetaCart
for objects with complex geome-try. We exploit the fact that model reduction on large deforma-tion models with linear materials (as commonly used in graphics) result in internal force models that are simply cubic polynomials in reduced coordinates. Coefficients of these polynomials can be precomputed
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