@article{Iseringhausen2017-07-20imagi-39834,
  year={2017},
  doi={10.1145/3072959.3073589},
  title={4D imaging through spray-on optics},
  number={4},
  volume={36},
  issn={0730-0301},
  journal={ACM Transactions on Graphics},
  author={Iseringhausen, Julian and Goldlücke, Bastian and Pesheva, Nina and Iliev, Stanimir and Wender, Alexander and Fuchs, Martin and Hullin, Matthias B.},
  note={Article Number: 35}
}

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    <dc:contributor>Iliev, Stanimir</dc:contributor>
    <dc:creator>Iseringhausen, Julian</dc:creator>
    <dc:date rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2017-08-10T12:19:48Z</dc:date>
    <dc:contributor>Fuchs, Martin</dc:contributor>
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    <dc:creator>Iliev, Stanimir</dc:creator>
    <dc:contributor>Hullin, Matthias B.</dc:contributor>
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    <dcterms:abstract xml:lang="eng">Light fields are a powerful concept in computational imaging and a mainstay in image-based rendering; however, so far their acquisition required either carefully designed and calibrated optical systems (micro-lens arrays), or multi-camera/multi-shot settings. Here, we show that fully calibrated light field data can be obtained from a single ordinary photograph taken through a partially wetted window. Each drop of water produces a distorted view on the scene, and the challenge of recovering the unknown mapping from pixel coordinates to refracted rays in space is a severely underconstrained problem. The key idea behind our solution is to combine ray tracing and low-level image analysis techniques (extraction of 2D drop contours and locations of scene features seen through drops) with state-of-the-art drop shape simulation and an iterative refinement scheme to enforce photo-consistency across features that are seen in multiple views. This novel approach not only recovers a dense pixel-to-ray mapping, but also the refractive geometry through which the scene is observed, to high accuracy. We therefore anticipate that our inherently self-calibrating scheme might also find applications in other fields, for instance in materials science where the wetting properties of liquids on surfaces are investigated.</dcterms:abstract>
    <dcterms:title>4D imaging through spray-on optics</dcterms:title>
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    <dc:contributor>Wender, Alexander</dc:contributor>
    <dc:creator>Hullin, Matthias B.</dc:creator>
    <dcterms:issued>2017-07-20</dcterms:issued>
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