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    Light field geometry of a standard plenoptic camera

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    Authors
    Hahne, Christopher
    Aggoun, Amar
    Haxha, Shyqyri
    Velisavljevic, Vladan
    Fernández, Juan Carlos Jácome
    Issue Date
    2014-10-21
    
    Metadata
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    Abstract
    The Standard Plenoptic Camera (SPC) is an innovation in photography, allowing for acquiring two-dimensional images focused at different depths, from a single exposure. Contrary to conventional cameras, the SPC consists of a micro lens array and a main lens projecting virtual lenses into object space. For the first time, the present research provides an approach to estimate the distance and depth of refocused images extracted from captures obtained by an SPC. Furthermore, estimates for the position and baseline of virtual lenses which correspond to an equivalent camera array are derived. On the basis of paraxial approximation, a ray tracing model employing linear equations has been developed and implemented using Matlab. The optics simulation tool Zemax is utilized for validation purposes. By designing a realistic SPC, experiments demonstrate that a predicted image refocusing distance at 3.5 m deviates by less than 11% from the simulation in Zemax, whereas baseline estimations indicate no significant difference. Applying the proposed methodology will enable an alternative to the traditional depth map acquisition by disparity analysis.
    Citation
    Light field geometry of a standard plenoptic camera 2014, 22 (22):26659 Optics Express
    Publisher
    Optical Society of America
    Journal
    Optics Express
    URI
    http://hdl.handle.net/2436/620772
    DOI
    10.1364/OE.22.026659
    Additional Links
    https://www.osapublishing.org/abstract.cfm?URI=oe-22-22-26659
    Type
    Journal article
    Language
    en
    ISSN
    1094-4087
    Sponsors
    European commision
    ae974a485f413a2113503eed53cd6c53
    10.1364/OE.22.026659
    Scopus Count
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    Faculty of Science and Engineering

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