siggraph 2010
DESCRIPTION
SIGGRAPH 2010. Interactive On- Surface Signal Deformation. Tobias Ritschel 1 Thorsten Thormählen 1 Carsten Dachsbacher 2 Jan Kautz 3 Hans-Peter Seidel 1 - PowerPoint PPT PresentationTRANSCRIPT
SIGGRAPH 2010
Interactive On-Surface Signal Deformation Tobias Ritschel1 Thorsten Thormählen1
Carsten Dachsbacher2 Jan Kautz3 Hans-Peter Seidel1
1Max-Planck-Institut Informatik 2Karlsruhe Institute of Technology 3University College London
Motivation
Arbitrary Signals on 2D Surfaces in 3D
Surface signal
Shadow Signal
LightShadow
Edit Metaphor
Soft Shadow Signal
Area light
Soft Shadow
Global Illumination Signal
Light
Indirect light
Caustic Signal
LightCaustic
3D Texture Signal
Polka dots
Previous Work
Appearance editingColbert et al. 2006Kautz et al. 2007Anjyo et al. 2003Todo et al. 2004
Light & Material PerceptionFleming et al. 2003Ramanarayana et al. 2005Khan et al. 2006
Light editingSchöneman et al. 1993Poulin et al. 1997Pellacini et al. 2007Obert et al. 2008
Previous Work
Surface deformationSumner et al. 2005Botsch et al. 2005
Meshless deformationIgarashi et al. 2005Müller et al. 2005Schaefer et al. 2006Sorkine and Alexa 2007
Previous Work
Shadow & Reflection editingRitschel et al. 2009Kerr et al. 2010Obert et al. 2010
ParametrizationTzur and Tal 2008Ischreiner et al. 2004Schmidt et al. 2006
Our Approach
location deformed location
: shading atlocation radiance
: shading at deformed location radiance
Our Approach
Shadow Signal (3D Deformation)
LightShadow
Solver
Deformationpoints
Solver Step 0
Solver Step 1
Solver Step 2
Solver Step 3
Objective Function
is evaluated inparallel
on the GPU
Objective: Maintain Distance
Objective: Stay on Surface
Distance Field
Energy: Handles
Multi-Resolution Approach
Level 2Level 1Level 0
Splatting
deformedpoint
undeformedpoint
positional term(3D position)
Gaussianfall-off
Splatting
Results: 3D Texture
Results: Indirect Light
Results: Caustic
Results: Difficult Topology
Results: Sketching
Results: Dynamic Shadow Caster
Results: Different Signals
select signal here
Conclusion
Interactive on-surface signal deformationallows different kinds of shading signals to bedeformed on a surface
Limitations and Future Work
• Perceptual bounds for edits• Edits on deforming object• Higher-dimensional (4D) editing of light transport
Thank you!
Makoto OkabeMichael WandMartin BokelohElmar EisemannZhao DongRobert W. SumnerJovan PopovicStanford 3D Scanning Repository
Initial ideasInternal reviewInternal reviewDiscussionsDiscussionsAnimal animationAnimal animation3D models
We would like to thank…