Snapshot polarimetric diffuse-specular separation

  • Dave A
  • Hold-Geoffroy Y
  • Hašan M
  • et al.
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Abstract

We present a polarization-based approach to perform diffuse-specular separation from a single polarimetric image, acquired using a flexible, practical capture setup. Our key technical insight is that, unlike previous polarization-based separation methods that assume completely unpolarized diffuse reflectance, we use a more general polarimetric model that accounts for partially polarized diffuse reflections. We capture the scene with a polarimetric sensor and produce an initial analytical diffuse-specular separation that we further pass into a deep network trained to refine the separation. We demonstrate that our combination of analytical separation and deep network refinement produces state-of-the-art diffuse-specular separation, which enables image-based appearance editing of dynamic scenes and enhanced appearance estimation.

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Dave, A., Hold-Geoffroy, Y., Hašan, M., Sunkavalli, K., & Veeraraghavan, A. (2022). Snapshot polarimetric diffuse-specular separation. Optics Express, 30(19), 34239. https://doi.org/10.1364/oe.460984

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