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SIGGRAPH 2010

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

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  1. 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

  2. Motivation

  3. Arbitrary Signals on 2D Surfaces in 3D Surface signal

  4. Shadow Signal Shadow Light

  5. Edit Metaphor

  6. Soft Shadow Signal Soft Shadow Area light

  7. Global Illumination Signal Light Indirect light

  8. Caustic Signal Light Caustic

  9. 3D Texture Signal Polka dots

  10. 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

  11. 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

  12. 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

  13. Our Approach : shading at location  radiance location  deformed location : shading at deformed location  radiance

  14. Our Approach

  15. Shadow Signal (3D Deformation) Light Shadow

  16. Solver Deformation points

  17. Solver Step 0

  18. Solver Step 1

  19. Solver Step 2

  20. Solver Step 3

  21. Objective Function is evaluated in parallel on the GPU

  22. Objective: Maintain Distance

  23. Objective: Stay on Surface

  24. Distance Field

  25. Energy: Handles

  26. Multi-Resolution Approach Level 2 Level 1 Level 0

  27. Splatting undeformed point deformed point positional term (3D position) Gaussian fall-off

  28. Splatting

  29. Results: 3D Texture

  30. Results: Indirect Light

  31. Results: Caustic

  32. Results: Difficult Topology

  33. Results: Sketching

  34. Results: Dynamic Shadow Caster

  35. Results: Different Signals select signal here

  36. Conclusion Interactive on-surface signal deformation allows different kinds of shading signals to be deformed on a surface

  37. Limitations and Future Work • Perceptual bounds for edits • Edits on deforming object • Higher-dimensional (4D) editing of light transport

  38. 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

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