Snapshot difference imaging using correlation time-of-flight sensors

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. In this pape...

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Bibliographic Details
Published in:ACM transactions on graphics 2017-12, Vol.36 (6), p.1-11
Main Authors: Callenberg, Clara, Heide, Felix, Wetzstein, Gordon, Hullin, Matthias B.
Format: Article
Language:English
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Summary: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. 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
1557-7368
DOI:10.1145/3130800.3130885