# Polarization-based Inverse Rendering

 Real Image Synthesized Image
 By observing the polarization state of the object from a single view, we estimated the 3D shape of the object, reflection parameters of the object such as reflectance and surface roughness, and also estimated the illumination distribution.   Polarizer-mounted color CCD camera is the measurement setup. First, from the color information of the obtained image, we separate each images into specular component image and diffuse component image. Then, we calculate the polarization data from images taken under different rotation angle of the polarizer. We estimate the surface shape from the polarization data. By detecting the intensity peak of specular component image, we estimate the orientation of the directional light sources. Finally, we estimate the reflection parameters of diffuse and specular reflection, that is, diffuse albedo, specular albedo, and surface roughness.
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*Polarization-based Inverse Rendering from a Single View
Daisuke Miyazaki, Robby T. Tan, Kenji Hara, Katsushi Ikeuchi
in Proceedings of International Conference on Computer Vision (ICCV2003), Vol. II, pp.982-987
Acropolis Conference Centre, Nice, Cote d'Azur, France
2003/10/15 (2003/10/13-2003/10/16)
http://www.cvl.iis.u-tokyo.ac.jp/iccv2003/
http://www.inrialpes.fr/movi/people/Triggs/iccv03/
Paper: English, Poster: English
Session 10: Posters and Demos III
Miyazaki-ICCV2003-Opaque.pdf
http://dx.doi.org/10.1109/ICCV.2003.1238455
Miyazaki-ICCV2003-Poster-Opaque.pdf
Errata("4.3. Histogram Modification" last paragraph, first sentence)
Wrong: Histogram of hemisphere will be 2Nsin\theta
Right: Histogram of hemisphere will be Nsin2\theta
*Polarization-based Inverse Rendering from Single View
Daisuke Miyazaki, Robby T. Tan, Kenji Hara, Katsushi Ikeuchi
in Proceedings of International Symposium on the CREST Digital Archiving Project
pp.51-65, Institute of Industrial Science, Tokyo, Japan, 2003/5/23 (2003/5/23-2003/5/24)
http://www.cvl.iis.u-tokyo.ac.jp/crest/symposium03/
Paper: English, Presentation: English
Photometric modeling session
Miyazaki-CREST2003.pdf
Miyazaki-CREST2003.ppt

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