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    Error Backprojection Algorithms for Non-Line-of-Sight Imaging

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    technical report (3.901Mb)
    Date
    2017-10-18
    Author
    La Manna, Marco
    Kine, Fiona
    Breitbach, Eric
    Jackson, Jonathan
    Velten, Andreas
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    Abstract
    Recent advances in computer vision and inverse light transport theory have resulted in several non-line-of-sight imaging techniques. These techniques use photon time-of-flight information encoded in light after multiple, diffuse reflections to reconstruct a three-dimensional scene. In this paper, we propose and describe two iterative backprojection algorithms, the additive error backprojection (AEB) and multiplicative error backprojection (MEB), whose goal is to improve the reconstruction of the scene under investigation over non-iterative backprojection algorithms. We evaluate the proposed algorithms’ performance applied to simulated and real data (gathered from an experimental setup where the system needs to reconstruct an unknown scene). Results show that the proposed iterative algorithms are able to provide better reconstruction than the unfiltered, non-iterative backprojection algorithm for both simulated and physical scenes, however are more sensitive to errors in the light transport model.
    Subject
    Algebraic Reconstruction Techniques (ART)
    Time-of-Flight
    Seeing-around-corners
    Kaczmarcz method
    Non-Line-of-Sight Imaging
    Permanent Link
    http://digital.library.wisc.edu/1793/76968
    Type
    Technical Report
    Part of
    • CS Technical Reports

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