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SIGGRAPH 2010. Interactive On- Surface Signal Deformation. Tobias Ritschel 1 Thorsten Thormählen 1 Carsten Dachsbacher 2      Jan Kautz 3         Hans-Peter Seidel 1

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siggraph 2010
SIGGRAPH 2010

Interactive On-Surface Signal Deformation

Tobias Ritschel1Thorsten Thormählen1

Carsten Dachsbacher2     Jan Kautz3        Hans-Peter Seidel1

1Max-Planck-Institut Informatik 2Karlsruhe Institute of Technology 3University College London

shadow signal
Shadow Signal

Shadow

Light

soft shadow signal
Soft Shadow Signal

Soft Shadow

Area light

global illumination signal
Global Illumination Signal

Light

Indirect light

caustic signal
Caustic Signal

Light

Caustic

previous work
Previous Work

Light editing

Schöneman et al. 1993

Poulin et al. 1997

Pellacini et al. 2007

Obert et al. 2008

Appearance editing

Colbert et al. 2006

Kautz et al. 2007

Anjyo et al. 2003

Todo et al. 2004

Light & Material Perception

Fleming et al. 2003

Ramanarayanaet al. 2005

Khan et al. 2006

previous work1
Previous Work

Meshless deformation

Igarashi et al. 2005

Müller et al. 2005

Schaefer et al. 2006

Sorkine and Alexa 2007

Surface deformation

Sumner et al. 2005

Botsch et al. 2005

previous work2
Previous Work

Parametrization

Tzur and Tal 2008

Ischreiner et al. 2004

Schmidt et al. 2006

Shadow & Reflection editing

Ritschel et al. 2009

Kerr et al. 2010

Obert et al. 2010

our approach
Our Approach

: shading at

location  radiance

location  deformed location

: shading at

deformed location  radiance

solver
Solver

Deformation

points

objective function
Objective Function

is evaluated in

parallel

on the GPU

m ulti resolution approach
Multi-Resolution Approach

Level 2

Level 1

Level 0

splatting
Splatting

undeformed

point

deformed

point

positional term

(3D position)

Gaussian

fall-off

conclusion
Conclusion

Interactive on-surface signal deformation

allows different kinds of shading signals to be

deformed on a surface

limitations and future work
Limitations and Future Work
  • Perceptual bounds for edits
  • Edits on deforming object
  • Higher-dimensional (4D) editing of light transport
thank you
Thank you!

Makoto Okabe

Michael Wand

Martin Bokeloh

ElmarEisemann

Zhao Dong

Robert W. Sumner

Jovan Popovic

Stanford 3D Scanning Repository

We would like to thank…

Initial ideas

Internal review

Internal review

Discussions

Discussions

Animal animation

Animal animation

3D models