• Chinese Optics Letters
  • Vol. 14, Issue 12, 121101 (2016)
Min-Chul Lee1, Kotaro Inoue1, Cheol-Su Kim2, and Myungjin Cho3、*
Author Affiliations
  • 1Department of Computer Science and Electronics, Kyushu Institute of Technology, Fukuoka 820-8502, Japan
  • 2Department of Electrical Energy and Computer Engineering, Gyeongju University, 188 Taejongro, Gyeongju City, KyeongsangBukdo, 38065, Republic of South Korea
  • 3Department of Electrical, Electronic, and Control Engineering, IITC, Hankyong National University, 327 Chungang-ro, Anseong-si, Gyonggi-do 456-749, Republic of South Korea
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    DOI: 10.3788/COL201614.121101 Cite this Article Set citation alerts
    Min-Chul Lee, Kotaro Inoue, Cheol-Su Kim, Myungjin Cho. Regeneration of elemental images in integral imaging for occluded objects using a plenoptic camera[J]. Chinese Optics Letters, 2016, 14(12): 121101 Copy Citation Text show less
    4D light field function. (a) Overview and (b) plenoptic camera.
    Fig. 1. 4D light field function. (a) Overview and (b) plenoptic camera.
    Sub-aperture images.
    Fig. 2. Sub-aperture images.
    Refocusing.
    Fig. 3. Refocusing.
    Image of equation (k=3, l=3): (a) EI, (b) D, (c) OL, (d) OREI, (e) VEI, and (f) REI.
    Fig. 4. Image of equation (k=3, l=3): (a) EI, (b) D, (c) OL, (d) OREI, (e) VEI, and (f) REI.
    Overview of the algorithm. (a) Movement of elemental images and (b) shifted pixels for regeneration.
    Fig. 5. Overview of the algorithm. (a) Movement of elemental images and (b) shifted pixels for regeneration.
    Linear approximation results.
    Fig. 6. Linear approximation results.
    Experimental results at d=620 mm: (a) original, (b) conventional occlusion removal, (c) proposed method, (d)–(f) enlarged views of (a)–(c), respectively.
    Fig. 7. Experimental results at d=620mm: (a) original, (b) conventional occlusion removal, (c) proposed method, (d)–(f) enlarged views of (a)–(c), respectively.
    Quality of image using MSE and PSNR.
    Fig. 8. Quality of image using MSE and PSNR.
    ParameterDefinition
    CSize of image sensor
    DDepth maps
    EIElemental image
    MMovement of virtual object
    NNumber of pixels for each elemental image
    OLOcclusion layer
    OREIOcclusion removed elemental image
    REIRegenerate elemental image
    SgNumber of shifted pixels for regeneration
    SrNumber of shifted pixels for reconstruction
    ThThreshold for occlusion layer
    VEIVirtual elemental image
    dReconstruction distance
    fFocal length of image sensor
    pMoving gap between image sensor
    Table 1. Definition of Parameters
     NearMiddleFar
    S (px)1057157
    d (mm)374.4553.8689.8
    t118149164
    Table 2. Calibration Results
    Min-Chul Lee, Kotaro Inoue, Cheol-Su Kim, Myungjin Cho. Regeneration of elemental images in integral imaging for occluded objects using a plenoptic camera[J]. Chinese Optics Letters, 2016, 14(12): 121101
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