Heightfield and spatially varying BRDF Reconstruction for Materials with Interreflections

In: Computer Graphics Forum (Proc. of Eurographics) (Apr. 2009), 28:2(513-522)
 

Abstract

Photo-realistic reproduction of material appearance from images has widespread use in applications rangingfrom movies over advertising to virtual prototyping. A common approach to this task is to reconstruct the small scale geometry of the sample and to capture the reflectance properties using spatially varying BRDFs. For this, multi-view and photometric stereo reconstruction can be used, both of which are limited regarding the amount of either view or light directions and suffer from either low- or high-frequency artifacts, respectively. In this paper, we propose a new algorithm combining both techniques to recover heightfields and spatially varying BRDFs while at the same time overcoming the above mentioned drawbacks. Our main contribution is a novel objective function which allows for the reconstruction of a heightfield and high quality SVBRDF including view dependent effects. Thereby, our method also avoids both low and high frequency artifacts. Additionally, our algorithm takes interreflections into account allowing for the reconstruction of undisturbed representations of the underlying material. In our experiments, including synthetic and real-world data, we show that our approach is superior to state-of-the-art methods regarding reconstruction error as well as visual impression. Both the reconstructed geometry and the recovered SVBRDF are highly accurate, resulting in a faithful reproduction of the materials characteristic appearance, which is of paramount importance in the context of material rendering.

The definitive version is available at diglib.eg.org and www.blackwell-synergy.com.

Bilder

Paper herunterladen

Paper herunterladen

Zusätzliches Material

Bibtex

@ARTICLE{ruiters-2009-heightfield,
    author = {Ruiters, Roland and Klein, Reinhard},
     pages = {513--522},
     title = {Heightfield and spatially varying BRDF Reconstruction for Materials with Interreflections},
   journal = {Computer Graphics Forum (Proc. of Eurographics)},
    volume = {28},
    number = {2},
      year = {2009},
     month = apr,
  abstract = {Photo-realistic reproduction of material appearance from images has widespread use in applications
              rangingfrom movies over advertising to virtual prototyping. A common approach to this task is to
              reconstruct the small scale geometry of the sample and to capture the reflectance properties using
              spatially varying BRDFs. For this, multi-view and photometric stereo reconstruction can be used,
              both of which are limited regarding the amount of either view or light directions and suffer from
              either low- or high-frequency artifacts, respectively. In this paper, we propose a new algorithm
              combining both techniques to recover heightfields and spatially varying BRDFs while at the same time
              overcoming the above mentioned drawbacks. Our main contribution is a novel objective function which
              allows for the reconstruction of a heightfield and high quality SVBRDF including view dependent
              effects. Thereby, our method also avoids both low and high frequency artifacts. Additionally, our
              algorithm takes interreflections into account allowing for the reconstruction of undisturbed
              representations of the underlying material. In our experiments, including synthetic and real-world
              data, we show that our approach is superior to state-of-the-art methods regarding reconstruction
              error as well as visual impression. Both the reconstructed geometry and the recovered SVBRDF are
              highly accurate, resulting in a faithful reproduction of the materials characteristic appearance,
              which is of paramount importance in the context of material rendering.}
}