Image-based Separation of Diffuse and Specular Reflections using Environmental Structured Illumination
IEEE International Conference on Computational Photography (ICCP) 2009
| Bruce Lamond Pieter Peers Abhijeet Ghosh Paul Debevec |
| University of Southern California, Institute for Creative Technologies |
Diffuse-specular separation under controlled hemispherical illumination. Left A ceramic Sake bottle illuminated by uniform hemispherical illumination. Middle The extracted diffuse component under the same lighting condition. Right The corresponding extracted specular component
Abstract:
We present an image-based method for separating diffuse and specular reflections using environmental structured illumination. Two types of structured illumination are discussed: phase-shifted sine wave patterns, and phase-shifted binary stripe patterns. In both cases the low-pass filtering nature of diffuse reflections is utilized to separate the reflection components. We illustrate our method on a wide range of example scenes and applications.
Material:
ICCP 2009 Paper:
- iccp2009.pdf, 33Mb. ( Adobe Acrobat )
Supplemental Technical Report (contains extra examples and derivations):
- ICT-TR-01-2009.pdf, 114 MB. ( Adobe Acrobat )