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    SocialSync: Sub-Frame Synchronization in a Smartphone Camera Network

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    Author
    Latimer, Richard
    Date
    2014-09-17
    Advisor
    Sabharwal, Ashutosh
    Degree
    Master of Science
    Abstract
    SocialSync is a sub-frame synchronization protocol for capturing images simultaneously using a smartphone camera network. By synchronizing image captures to within a frame period, multiple smartphone cameras, which are often in use in social settings, can be used for a variety of applications including light field capture, depth estimation, and free viewpoint television. Currently, smartphone camera networks are limited to capturing static scenes due to motion artifacts caused by frame misalignment. Because frame misalignment in smartphones camera networks is caused by variability in the camera system, we characterize frame capture on mobile devices by analyzing the statistics of camera setup latency and frame delivery within an Android app. Next, we develop the SocialSync protocol to achieve sub-frame synchronization between devices by estimating frame capture timestamps to within millisecond accuracy. Finally, we demonstrate the effectiveness of SocialSync on mobile devices by reducing motion-induced artifacts when recovering the light field.
    Keyword
    multiple viewpoints; camera array; camera network; synchronization; smartphone; More... mobile device Less...
    Citation
    Latimer, Richard. "SocialSync: Sub-Frame Synchronization in a Smartphone Camera Network." (2014) Master’s Thesis, Rice University. http://hdl.handle.net/1911/87803.
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    • ECE Theses and Dissertations [597]
    • Rice University Electronic Theses and Dissertations [10740]

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    Managed by the Digital Scholarship Services at Fondren Library, Rice University
    Physical Address: 6100 Main Street, Houston, Texas 77005
    Mailing Address: MS-44, P.O.BOX 1892, Houston, Texas 77251-1892