|
ICT
GL
| Estimating Diffusion Parameters from Polarized Spherical Gradient Illumination | IEEE CG&A Special Issue on Scattering May/June 2013 | SIGGRAPH 2012 Talk | SIGGRAPH 2012 Poster |
| Yufeng Zhu Pradeep Garigipati Pieter Peers Paul Debevec Abhijeet Ghosh |
| USC Institute for Creative Technologies |
Observations under cross-polarized 0th and 1th spherical gradient illumination conditions (top-row) employed to estimate per-surface point diffusion parameters (center) for dipole diffusion rendering (right).
Abstract:
We propose a novel method for acquiring subsurface scattering parameters of heterogeneous translucent materials. We show that dense per-surfacepoint scattering parameters can be directly obtained from observations under cross-polarized spherical gradient illumination of curved surfaces. Our method is a direct method, and does not require any explicit fitting of observed scattering profiles. The validity of the developed theory is demonstrated on a variety of heterogeneous translucent objects.
Material:
IEEE CG&A 2013 Paper:
- IEEECG&A-SpecialIssue-Scattering.pdf,3.41 MB. ( Adobe Acrobat )
SIGGRAPH 2012 Poster:
- SIGGRAPH2012_Poster.pdf, 15.6 MB. ( Adobe Acrobat )
Related Projects:
- Light Stage Face Scanning:
- Specular Roughness and Anisotropy from Second Order Gradients,
Eurographics Symposium on Rendering 2009 - Practical Modeling and Acquisition of Layered Facial Reflectance , ACM SIGGRAPH Asia 2008
- High-Resolution Face Scanning, Eurographics Symposium on Rendering 2007
- Specular Roughness and Anisotropy from Second Order Gradients,
- Light Stage 1:
- Acquiring the Reflectance Field of a Human Face, SIGGRAPH 2000