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Article

Compact and efficient generation of radiance transfer for dynamically articulated characters

Authors:

Derek Nowrouzezahrai,

Patricio Simari,

Evangelos Kalogerakis,

Eugene FiumeAuthors Info & Claims

GRAPHITE '07: Proceedings of the 5th international conference on Computer graphics and interactive techniques in Australia and Southeast Asia

Pages 147 - 154

https://doi.org/10.1145/1321261.1321288

Published: 01 December 2007 Publication History

Abstract

We present a data-driven technique for generating the precomputed radiance transfer vectors of an animated character as a function of its joint angles. We learn a linear model for generating real-time lighting effects on articulated characters while capturing soft self-shadows caused by dynamic distant lighting. Indirect illumination can also be reproduced using our framework. Previous data-driven techniques have either restricted the type of lighting response (generating only ambient occlusion), the type of animated sequences (response functions to external forces) or have complicated runtime algorithms and incur non-trivial memory costs. We provide insights into the dimensionality reduction of the pose and coefficient spaces. Our model can be fit quickly as a preprocess, is very compact (~1 MB) and runtime transfer vectors are generated using a simple algorithm in real-time (> 100 Hz using a CPU-only implementation.) We can reproduce lighting effects on hundreds of trained poses using less memory than required to store a single mesh's PRT coefficients. Moreover, our model extrapolates to produce smooth, believable lighting results on novel poses and our method can be easily integrated into existing interactive content pipelines.

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Cited By

Xu YJiang YZhang JLi KGeng G(2022)Real-Time Ray-Traced Soft Shadows of Environmental Lighting by Conical Ray CullingProceedings of the ACM on Computer Graphics and Interactive Techniques10.1145/35226175:1(1-15)Online publication date: 4-May-2022
https://dl.acm.org/doi/10.1145/3522617
Kalogerakis ENowrouzezahrai DSimari PMccrae JHertzmann ASingh K(2009)Data-driven curvature for real-time line drawing of dynamic scenesACM Transactions on Graphics10.1145/1477926.147793728:1(1-13)Online publication date: 9-Feb-2009
https://dl.acm.org/doi/10.1145/1477926.1477937
Nowrouzezahrai DKalogerakis EFiume E(2009)Shadowing Dynamic Scenes with Arbitrary BRDFsComputer Graphics Forum10.1111/j.1467-8659.2009.01364.x28:2(249-258)Online publication date: 27-Mar-2009
https://doi.org/10.1111/j.1467-8659.2009.01364.x

Index Terms

Compact and efficient generation of radiance transfer for dynamically articulated characters
1. Computing methodologies
  1. Computer graphics
    1. Image manipulation
      1. Texturing

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cover image ACM Conferences

GRAPHITE '07: Proceedings of the 5th international conference on Computer graphics and interactive techniques in Australia and Southeast Asia

December 2007

335 pages

ISBN:9781595939128

DOI:10.1145/1321261

Conference Chair:
Andrew Rohl
iVEC

Copyright © 2007 ACM.

Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for components of this work owned by others than ACM must be honored. Abstracting with credit is permitted. To copy otherwise, or republish, to post on servers or to redistribute to lists, requires prior specific permission and/or a fee. Request permissions from [email protected]

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SIGGRAPH: ACM Special Interest Group on Computer Graphics and Interactive Techniques

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Association for Computing Machinery

New York, NY, United States

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Published: 01 December 2007

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GRAPHITE07

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SIGGRAPH

GRAPHITE07: International Conference on Computer Graphics and Interactive Techniques in Australasia and South East Asia

December 1 - 4, 2007

Perth, Australia

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Overall Acceptance Rate 124 of 241 submissions, 51%

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Cited By

Xu YJiang YZhang JLi KGeng G(2022)Real-Time Ray-Traced Soft Shadows of Environmental Lighting by Conical Ray CullingProceedings of the ACM on Computer Graphics and Interactive Techniques10.1145/35226175:1(1-15)Online publication date: 4-May-2022
https://dl.acm.org/doi/10.1145/3522617
Kalogerakis ENowrouzezahrai DSimari PMccrae JHertzmann ASingh K(2009)Data-driven curvature for real-time line drawing of dynamic scenesACM Transactions on Graphics10.1145/1477926.147793728:1(1-13)Online publication date: 9-Feb-2009
https://dl.acm.org/doi/10.1145/1477926.1477937
Nowrouzezahrai DKalogerakis EFiume E(2009)Shadowing Dynamic Scenes with Arbitrary BRDFsComputer Graphics Forum10.1111/j.1467-8659.2009.01364.x28:2(249-258)Online publication date: 27-Mar-2009
https://doi.org/10.1111/j.1467-8659.2009.01364.x

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