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Image-based Separation of Diffuse and Specular Reflections using Environmental Structured Illumination
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:

Supplemental Technical Report (contains extra examples and derivations):


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