Snapshot Difference Imaging Using Correlation Time-of-flight Sensors

Clara Callenberg, Felix Heide, Gordon Wetzstein, and Matthias B. Hullin
In: ACM Trans. Graph. (Proc. SIGGRAPH Asia) (Nov. 2017), 36:6
 

Abstract

Computational photography encompasses a diversity of imaging techniques, but one of the core operations performed by many of them is to compute image differences. An intuitive approach to computing such differences is to capture several images sequentially and then process them jointly. Usually, this approach leads to artifacts when recording dynamic scenes. In this paper, we introduce a snapshot difference imaging approach that is directly implemented in the sensor hardware of emerging time-of-flight cameras. With a variety of examples, we demonstrate that the proposed snapshot difference imaging technique is useful for direct-global illumination separation, for direct imaging of spatial and temporal image gradients, for direct depth edge imaging, and more.

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Bibtex

@ARTICLE{callenberg2017,
    author = {Callenberg, Clara and Heide, Felix and Wetzstein, Gordon and Hullin, Matthias B.},
     title = {Snapshot Difference Imaging Using Correlation Time-of-flight Sensors},
   journal = {ACM Trans. Graph. (Proc. SIGGRAPH Asia)},
    volume = {36},
    number = {6},
      year = {2017},
     month = nov,
  abstract = {Computational photography encompasses a diversity of imaging techniques, but one of the core
              operations performed by many of them is to compute image differences. An intuitive approach to
              computing such differences is to capture several images sequentially and then process them jointly.
              Usually, this approach leads to artifacts when recording dynamic scenes. In this paper, we introduce
              a snapshot difference imaging approach that is directly implemented in the sensor hardware of
              emerging time-of-flight cameras. With a variety of examples, we demonstrate that the proposed
              snapshot difference imaging technique is useful for direct-global illumination separation, for
              direct imaging of spatial and temporal image gradients, for direct depth edge imaging, and more.},
      issn = {0730-0301},
       url = {http://doi.acm.org/10.1145/3130800.3130885},
       doi = {10.1145/3130800.3130885}
}