Snapshot difference imaging using correlation time-of-flight sensors

Clara Callenberg, Felix Heide, Gordon Wetzstein, Matthias B. Hullin

Research output: Contribution to journalConference articlepeer-review

8 Scopus citations


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.

Original languageEnglish (US)
Article numbera220
JournalACM Transactions on Graphics
Issue number6
StatePublished - Nov 20 2017
Externally publishedYes
EventACM SIGGRAPH Asia Conference, SA 2017 - Bangkok, Thailand
Duration: Nov 27 2017Nov 30 2017

All Science Journal Classification (ASJC) codes

  • Computer Graphics and Computer-Aided Design


  • Computational photography
  • ToF imaging


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