Skewed stereo time-of-flight camera for translucent object imaging

Seungkyu Lee, Hyunjung Shim

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)

Abstract

Time-of-flight (ToF) depth cameras have widely been used in many applications such as 3D imaging, 3D reconstruction, human interaction and robot navigation. However, conventional depth cameras are incapable of imaging a translucent object which occupies a substantial portion of a real world scene. Such a limitation prohibits realistic imaging using depth cameras. In this work, we propose a new skewed stereo ToF camera for detecting and imaging translucent objects under minimal prior of environment. We find that the depth calculation of a ToF camera with a translucent object presents a systematic distortion due to the superposed reflected light ray observation from multiple surfaces. We propose to use a stereo ToF camera setup and derive a generalized depth imaging formulation for translucent objects. Distorted depth value is refined using an iterative optimization. Experimental evaluation shows that our proposed method reasonably recovers the depth image of translucent objects.

Original languageEnglish
Pages (from-to)27-38
Number of pages12
JournalImage and Vision Computing
Volume43
DOIs
Publication statusPublished - 2015 Nov 1

Bibliographical note

Funding Information:
This work was supported by Kyung Hee University in 2013 under grant KHU-20130684 . This work was also supported by the Global Frontier R&D Program on “Human-centered Interaction for Coexistence” funded by the National Research Foundation of Korea grant funded by the Korean Government (MSIP) ( 2012M3A6A3057376 ).

Publisher Copyright:
© 2015 Elsevier B.V.

All Science Journal Classification (ASJC) codes

  • Signal Processing
  • Computer Vision and Pattern Recognition

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