|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
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.
ICCP 2009 Paper:
Supplemental Technical Report (contains extra examples and derivations):
- Precursory Project:
- Reflective Light Stage:
- A Reflective Light Stage, Technical Report ICT-TR-04.2006
- Polarized Spherical Gradient Illumination:
- Light Stage 1