Abstract

A sub-pixel image shifter is presented, for use in enhancing the spatial resolution of digital image sensors by combining multiple displaced sub-images using a super-resolution (SR) algorithm. The device uses the walk-off phenomenon in birefringent crystals to separate images with opposite polarizations by a sub-pixel displacement. A liquid crystal (LC) waveplate plus a polarizer can then select the specific image to be exposed, with fast, non-mechanical control. This cascaded device, comprising two sapphire crystals, two LCs, and a single polarizer, is capable of 2-dimensional image shift with displacements of 0.5 pixels. The experimental results show that the image registration stability can be precisely controlled within 0.05 pixels and the contrast transfer function ratio of the SR image is enhanced by up to 1.36 times compared to the original captured image. Moreover, based on the fast transition time of LCs, the displaced sub-images can be recorded in video form with a frame rate of 40 fps.

© 2009 OSA

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  2. M. Bramberger, A. Doblander, A. Maier, B. Rinner, and H. Schwabach, “Distributed Embedded Smart Cameras for Surveillance Applications,” IEEE Computer 39(2), 68–75 (2006).
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    [CrossRef]
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    [CrossRef]
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    [CrossRef]
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    [CrossRef]
  11. C. Park, M. K. Park, M. G. Kang,, S. C Park, M. K Park, and M. G Kang, “Super-resolution image reconstruction: a technical overview,” IEEE Signal Process. Mag. 20(3), 21–36 (2003).
    [CrossRef]
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    [CrossRef]
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    [CrossRef]
  15. K. Nishiyama, M. Okita, S. Kawaguchi, K. Teranishi, and R. Takamatsu, “32” WXGA LCD TV using OCB Mode, low temperature p-Si TFT and blinking backlight technology,” in SID Tech. Dig.36(1), 132–135 (2005).
  16. S. Gauza, X. Zhu, W. Piecek, R. Dabrowski, and S. T. Wu, ““Fast Switching Liquid Crystals for Color-Sequential LCDs, ” IEEE/OSA J, Display Technol. 3(3), 250–252 (2007).
    [CrossRef]
  17. J. M. Liu, Photonic Devices (Cambridge University Press, 2005), Chap. 1.
  18. J. J. Wang, J. Deng, X. Deng, F. Liu, P. Sciortino, L. Chen, A. Nikolov, and A. Graham, “Innovative high-performance nanowire-grid polarizers and integrated isolators,” IEEE J. Sel. Top. Quantum Electron. 11(1), 241–253 (2005).
    [CrossRef]
  19. Y. Ekinci, H. H. Solak, C. David, and H. Sigg, “Bilayer Al wire-grids as broadband and high-performance polarizers,” Opt. Express 14(6), 2323–2334 (2006), http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-14-6-2323 .
    [CrossRef]
  20. R. Lu, X. Zhu, S. T. Wu, Q. Hong, and T. X. Wu, “Ultrawide-View Liquid Crystal Displays,” IEEE/OSA J Display Technol. 1(1), 3–14 (2005).
    [CrossRef]
  21. R. Raskar, A. Agrawal, and J. Tumblin, “Coded exposure photography: motion deblurring using fluttered shutter,” ACM Trans. Graph. 25(3), 795–804 (2006) (TOG).
    [CrossRef]

2008 (1)

2007 (4)

P. Vandewalle, L. Sbaiz, J. Vandewalle, and M. Vetterli, “Super-resolution from unregistered and totally aliased signals using subspace methods,” IEEE Trans. Signal Process. 55(7), 3687–3703 (2007).
[CrossRef]

K. Yu, N. Park, D. Lee, and O. Solgaard, “Superresolution digital image enhancement by subpixel image translation with a scanning micromirror,” IEEE J. Sel. Top. Quantum Electron. 13(2), 304–311 (2007).
[CrossRef]

R. A. Hicks, V. T. Nasis, and T. P. Kurzweg, “Programmable imaging with two-axis micromirrors,” Opt. Lett. 32(9), 1066–1068 (2007).
[CrossRef]

S. Gauza, X. Zhu, W. Piecek, R. Dabrowski, and S. T. Wu, ““Fast Switching Liquid Crystals for Color-Sequential LCDs, ” IEEE/OSA J, Display Technol. 3(3), 250–252 (2007).
[CrossRef]

2006 (4)

Y. Ekinci, H. H. Solak, C. David, and H. Sigg, “Bilayer Al wire-grids as broadband and high-performance polarizers,” Opt. Express 14(6), 2323–2334 (2006), http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-14-6-2323 .
[CrossRef]

R. Raskar, A. Agrawal, and J. Tumblin, “Coded exposure photography: motion deblurring using fluttered shutter,” ACM Trans. Graph. 25(3), 795–804 (2006) (TOG).
[CrossRef]

M. Bramberger, A. Doblander, A. Maier, B. Rinner, and H. Schwabach, “Distributed Embedded Smart Cameras for Surveillance Applications,” IEEE Computer 39(2), 68–75 (2006).

S. K. Nayar, “Computational Cameras: Redefining the Image,” IEEE Computer 39(8), 30–38 (2006).

2005 (3)

M. Ben-Ezra, A. Zomet, and S. K. Nayar, “Video super-resolution using controlled subpixel detector shifts,” IEEE Trans. Pattern Anal. Mach. Intell. 27(6), 977–987 (2005).
[CrossRef]

R. Lu, X. Zhu, S. T. Wu, Q. Hong, and T. X. Wu, “Ultrawide-View Liquid Crystal Displays,” IEEE/OSA J Display Technol. 1(1), 3–14 (2005).
[CrossRef]

J. J. Wang, J. Deng, X. Deng, F. Liu, P. Sciortino, L. Chen, A. Nikolov, and A. Graham, “Innovative high-performance nanowire-grid polarizers and integrated isolators,” IEEE J. Sel. Top. Quantum Electron. 11(1), 241–253 (2005).
[CrossRef]

2004 (1)

E. Choi, J. Choi, and M. G. Kang, “Super-resolution approach to overcome physical limitations of imaging sensors: an overview,” Int. J. Imaging Syst. Technol. 14(2), 36–46 (2004).
[CrossRef]

2003 (1)

C. Park, M. K. Park, M. G. Kang,, S. C Park, M. K Park, and M. G Kang, “Super-resolution image reconstruction: a technical overview,” IEEE Signal Process. Mag. 20(3), 21–36 (2003).
[CrossRef]

2002 (1)

W. Wolf, B. Ozer, and T. Lv, “Smart Cameras as Embedded Systems,” IEEE Computer 35(9), 48–53 (2002).

1989 (1)

Agrawal, A.

R. Raskar, A. Agrawal, and J. Tumblin, “Coded exposure photography: motion deblurring using fluttered shutter,” ACM Trans. Graph. 25(3), 795–804 (2006) (TOG).
[CrossRef]

Ben-Ezra, M.

M. Ben-Ezra, A. Zomet, and S. K. Nayar, “Video super-resolution using controlled subpixel detector shifts,” IEEE Trans. Pattern Anal. Mach. Intell. 27(6), 977–987 (2005).
[CrossRef]

Brady, D. J.

Bramberger, M.

M. Bramberger, A. Doblander, A. Maier, B. Rinner, and H. Schwabach, “Distributed Embedded Smart Cameras for Surveillance Applications,” IEEE Computer 39(2), 68–75 (2006).

Chen, L.

J. J. Wang, J. Deng, X. Deng, F. Liu, P. Sciortino, L. Chen, A. Nikolov, and A. Graham, “Innovative high-performance nanowire-grid polarizers and integrated isolators,” IEEE J. Sel. Top. Quantum Electron. 11(1), 241–253 (2005).
[CrossRef]

Choi, E.

E. Choi, J. Choi, and M. G. Kang, “Super-resolution approach to overcome physical limitations of imaging sensors: an overview,” Int. J. Imaging Syst. Technol. 14(2), 36–46 (2004).
[CrossRef]

Choi, J.

E. Choi, J. Choi, and M. G. Kang, “Super-resolution approach to overcome physical limitations of imaging sensors: an overview,” Int. J. Imaging Syst. Technol. 14(2), 36–46 (2004).
[CrossRef]

Dabrowski, R.

S. Gauza, X. Zhu, W. Piecek, R. Dabrowski, and S. T. Wu, ““Fast Switching Liquid Crystals for Color-Sequential LCDs, ” IEEE/OSA J, Display Technol. 3(3), 250–252 (2007).
[CrossRef]

David, C.

Deng, J.

J. J. Wang, J. Deng, X. Deng, F. Liu, P. Sciortino, L. Chen, A. Nikolov, and A. Graham, “Innovative high-performance nanowire-grid polarizers and integrated isolators,” IEEE J. Sel. Top. Quantum Electron. 11(1), 241–253 (2005).
[CrossRef]

Deng, X.

J. J. Wang, J. Deng, X. Deng, F. Liu, P. Sciortino, L. Chen, A. Nikolov, and A. Graham, “Innovative high-performance nanowire-grid polarizers and integrated isolators,” IEEE J. Sel. Top. Quantum Electron. 11(1), 241–253 (2005).
[CrossRef]

Doblander, A.

M. Bramberger, A. Doblander, A. Maier, B. Rinner, and H. Schwabach, “Distributed Embedded Smart Cameras for Surveillance Applications,” IEEE Computer 39(2), 68–75 (2006).

Ekinci, Y.

Eldeniz, C.

Gauza, S.

S. Gauza, X. Zhu, W. Piecek, R. Dabrowski, and S. T. Wu, ““Fast Switching Liquid Crystals for Color-Sequential LCDs, ” IEEE/OSA J, Display Technol. 3(3), 250–252 (2007).
[CrossRef]

Graham, A.

J. J. Wang, J. Deng, X. Deng, F. Liu, P. Sciortino, L. Chen, A. Nikolov, and A. Graham, “Innovative high-performance nanowire-grid polarizers and integrated isolators,” IEEE J. Sel. Top. Quantum Electron. 11(1), 241–253 (2005).
[CrossRef]

Hicks, R. A.

Hong, Q.

R. Lu, X. Zhu, S. T. Wu, Q. Hong, and T. X. Wu, “Ultrawide-View Liquid Crystal Displays,” IEEE/OSA J Display Technol. 1(1), 3–14 (2005).
[CrossRef]

Kang, M. G

C. Park, M. K. Park, M. G. Kang,, S. C Park, M. K Park, and M. G Kang, “Super-resolution image reconstruction: a technical overview,” IEEE Signal Process. Mag. 20(3), 21–36 (2003).
[CrossRef]

Kang, M. G.

E. Choi, J. Choi, and M. G. Kang, “Super-resolution approach to overcome physical limitations of imaging sensors: an overview,” Int. J. Imaging Syst. Technol. 14(2), 36–46 (2004).
[CrossRef]

Kang,, M. G.

C. Park, M. K. Park, M. G. Kang,, S. C Park, M. K Park, and M. G Kang, “Super-resolution image reconstruction: a technical overview,” IEEE Signal Process. Mag. 20(3), 21–36 (2003).
[CrossRef]

Kim, C.

Kim, J.

Kurzweg, T. P.

Lee, D.

K. Yu, N. Park, D. Lee, and O. Solgaard, “Superresolution digital image enhancement by subpixel image translation with a scanning micromirror,” IEEE J. Sel. Top. Quantum Electron. 13(2), 304–311 (2007).
[CrossRef]

Liu, F.

J. J. Wang, J. Deng, X. Deng, F. Liu, P. Sciortino, L. Chen, A. Nikolov, and A. Graham, “Innovative high-performance nanowire-grid polarizers and integrated isolators,” IEEE J. Sel. Top. Quantum Electron. 11(1), 241–253 (2005).
[CrossRef]

Lu, R.

R. Lu, X. Zhu, S. T. Wu, Q. Hong, and T. X. Wu, “Ultrawide-View Liquid Crystal Displays,” IEEE/OSA J Display Technol. 1(1), 3–14 (2005).
[CrossRef]

Lv, T.

W. Wolf, B. Ozer, and T. Lv, “Smart Cameras as Embedded Systems,” IEEE Computer 35(9), 48–53 (2002).

Maier, A.

M. Bramberger, A. Doblander, A. Maier, B. Rinner, and H. Schwabach, “Distributed Embedded Smart Cameras for Surveillance Applications,” IEEE Computer 39(2), 68–75 (2006).

Marcia, R. F.

Nasis, V. T.

Nayar, S. K.

S. K. Nayar, “Computational Cameras: Redefining the Image,” IEEE Computer 39(8), 30–38 (2006).

M. Ben-Ezra, A. Zomet, and S. K. Nayar, “Video super-resolution using controlled subpixel detector shifts,” IEEE Trans. Pattern Anal. Mach. Intell. 27(6), 977–987 (2005).
[CrossRef]

Nikolov, A.

J. J. Wang, J. Deng, X. Deng, F. Liu, P. Sciortino, L. Chen, A. Nikolov, and A. Graham, “Innovative high-performance nanowire-grid polarizers and integrated isolators,” IEEE J. Sel. Top. Quantum Electron. 11(1), 241–253 (2005).
[CrossRef]

Oskoui, P.

Ozer, B.

W. Wolf, B. Ozer, and T. Lv, “Smart Cameras as Embedded Systems,” IEEE Computer 35(9), 48–53 (2002).

Park, C.

C. Park, M. K. Park, M. G. Kang,, S. C Park, M. K Park, and M. G Kang, “Super-resolution image reconstruction: a technical overview,” IEEE Signal Process. Mag. 20(3), 21–36 (2003).
[CrossRef]

Park, M. K

C. Park, M. K. Park, M. G. Kang,, S. C Park, M. K Park, and M. G Kang, “Super-resolution image reconstruction: a technical overview,” IEEE Signal Process. Mag. 20(3), 21–36 (2003).
[CrossRef]

Park, M. K.

C. Park, M. K. Park, M. G. Kang,, S. C Park, M. K Park, and M. G Kang, “Super-resolution image reconstruction: a technical overview,” IEEE Signal Process. Mag. 20(3), 21–36 (2003).
[CrossRef]

Park, N.

K. Yu, N. Park, D. Lee, and O. Solgaard, “Superresolution digital image enhancement by subpixel image translation with a scanning micromirror,” IEEE J. Sel. Top. Quantum Electron. 13(2), 304–311 (2007).
[CrossRef]

Park, S. C

C. Park, M. K. Park, M. G. Kang,, S. C Park, M. K Park, and M. G Kang, “Super-resolution image reconstruction: a technical overview,” IEEE Signal Process. Mag. 20(3), 21–36 (2003).
[CrossRef]

Piecek, W.

S. Gauza, X. Zhu, W. Piecek, R. Dabrowski, and S. T. Wu, ““Fast Switching Liquid Crystals for Color-Sequential LCDs, ” IEEE/OSA J, Display Technol. 3(3), 250–252 (2007).
[CrossRef]

Raskar, R.

R. Raskar, A. Agrawal, and J. Tumblin, “Coded exposure photography: motion deblurring using fluttered shutter,” ACM Trans. Graph. 25(3), 795–804 (2006) (TOG).
[CrossRef]

Rinner, B.

M. Bramberger, A. Doblander, A. Maier, B. Rinner, and H. Schwabach, “Distributed Embedded Smart Cameras for Surveillance Applications,” IEEE Computer 39(2), 68–75 (2006).

Sbaiz, L.

P. Vandewalle, L. Sbaiz, J. Vandewalle, and M. Vetterli, “Super-resolution from unregistered and totally aliased signals using subspace methods,” IEEE Trans. Signal Process. 55(7), 3687–3703 (2007).
[CrossRef]

Schwabach, H.

M. Bramberger, A. Doblander, A. Maier, B. Rinner, and H. Schwabach, “Distributed Embedded Smart Cameras for Surveillance Applications,” IEEE Computer 39(2), 68–75 (2006).

Sciortino, P.

J. J. Wang, J. Deng, X. Deng, F. Liu, P. Sciortino, L. Chen, A. Nikolov, and A. Graham, “Innovative high-performance nanowire-grid polarizers and integrated isolators,” IEEE J. Sel. Top. Quantum Electron. 11(1), 241–253 (2005).
[CrossRef]

Sigg, H.

Solak, H. H.

Solgaard, O.

K. Yu, N. Park, D. Lee, and O. Solgaard, “Superresolution digital image enhancement by subpixel image translation with a scanning micromirror,” IEEE J. Sel. Top. Quantum Electron. 13(2), 304–311 (2007).
[CrossRef]

Stark, H.

Tumblin, J.

R. Raskar, A. Agrawal, and J. Tumblin, “Coded exposure photography: motion deblurring using fluttered shutter,” ACM Trans. Graph. 25(3), 795–804 (2006) (TOG).
[CrossRef]

Vandewalle, J.

P. Vandewalle, L. Sbaiz, J. Vandewalle, and M. Vetterli, “Super-resolution from unregistered and totally aliased signals using subspace methods,” IEEE Trans. Signal Process. 55(7), 3687–3703 (2007).
[CrossRef]

Vandewalle, P.

P. Vandewalle, L. Sbaiz, J. Vandewalle, and M. Vetterli, “Super-resolution from unregistered and totally aliased signals using subspace methods,” IEEE Trans. Signal Process. 55(7), 3687–3703 (2007).
[CrossRef]

Vetterli, M.

P. Vandewalle, L. Sbaiz, J. Vandewalle, and M. Vetterli, “Super-resolution from unregistered and totally aliased signals using subspace methods,” IEEE Trans. Signal Process. 55(7), 3687–3703 (2007).
[CrossRef]

Wang, J. J.

J. J. Wang, J. Deng, X. Deng, F. Liu, P. Sciortino, L. Chen, A. Nikolov, and A. Graham, “Innovative high-performance nanowire-grid polarizers and integrated isolators,” IEEE J. Sel. Top. Quantum Electron. 11(1), 241–253 (2005).
[CrossRef]

Willett, R. M.

Wolf, W.

W. Wolf, B. Ozer, and T. Lv, “Smart Cameras as Embedded Systems,” IEEE Computer 35(9), 48–53 (2002).

Wu, S. T.

S. Gauza, X. Zhu, W. Piecek, R. Dabrowski, and S. T. Wu, ““Fast Switching Liquid Crystals for Color-Sequential LCDs, ” IEEE/OSA J, Display Technol. 3(3), 250–252 (2007).
[CrossRef]

R. Lu, X. Zhu, S. T. Wu, Q. Hong, and T. X. Wu, “Ultrawide-View Liquid Crystal Displays,” IEEE/OSA J Display Technol. 1(1), 3–14 (2005).
[CrossRef]

Wu, T. X.

R. Lu, X. Zhu, S. T. Wu, Q. Hong, and T. X. Wu, “Ultrawide-View Liquid Crystal Displays,” IEEE/OSA J Display Technol. 1(1), 3–14 (2005).
[CrossRef]

Yu, K.

K. Yu, N. Park, D. Lee, and O. Solgaard, “Superresolution digital image enhancement by subpixel image translation with a scanning micromirror,” IEEE J. Sel. Top. Quantum Electron. 13(2), 304–311 (2007).
[CrossRef]

Zhu, X.

S. Gauza, X. Zhu, W. Piecek, R. Dabrowski, and S. T. Wu, ““Fast Switching Liquid Crystals for Color-Sequential LCDs, ” IEEE/OSA J, Display Technol. 3(3), 250–252 (2007).
[CrossRef]

R. Lu, X. Zhu, S. T. Wu, Q. Hong, and T. X. Wu, “Ultrawide-View Liquid Crystal Displays,” IEEE/OSA J Display Technol. 1(1), 3–14 (2005).
[CrossRef]

Zomet, A.

M. Ben-Ezra, A. Zomet, and S. K. Nayar, “Video super-resolution using controlled subpixel detector shifts,” IEEE Trans. Pattern Anal. Mach. Intell. 27(6), 977–987 (2005).
[CrossRef]

ACM Trans. Graph. (1)

R. Raskar, A. Agrawal, and J. Tumblin, “Coded exposure photography: motion deblurring using fluttered shutter,” ACM Trans. Graph. 25(3), 795–804 (2006) (TOG).
[CrossRef]

IEEE Computer (3)

W. Wolf, B. Ozer, and T. Lv, “Smart Cameras as Embedded Systems,” IEEE Computer 35(9), 48–53 (2002).

M. Bramberger, A. Doblander, A. Maier, B. Rinner, and H. Schwabach, “Distributed Embedded Smart Cameras for Surveillance Applications,” IEEE Computer 39(2), 68–75 (2006).

S. K. Nayar, “Computational Cameras: Redefining the Image,” IEEE Computer 39(8), 30–38 (2006).

IEEE J. Sel. Top. Quantum Electron. (2)

K. Yu, N. Park, D. Lee, and O. Solgaard, “Superresolution digital image enhancement by subpixel image translation with a scanning micromirror,” IEEE J. Sel. Top. Quantum Electron. 13(2), 304–311 (2007).
[CrossRef]

J. J. Wang, J. Deng, X. Deng, F. Liu, P. Sciortino, L. Chen, A. Nikolov, and A. Graham, “Innovative high-performance nanowire-grid polarizers and integrated isolators,” IEEE J. Sel. Top. Quantum Electron. 11(1), 241–253 (2005).
[CrossRef]

IEEE Signal Process. Mag. (1)

C. Park, M. K. Park, M. G. Kang,, S. C Park, M. K Park, and M. G Kang, “Super-resolution image reconstruction: a technical overview,” IEEE Signal Process. Mag. 20(3), 21–36 (2003).
[CrossRef]

IEEE Trans. Pattern Anal. Mach. Intell. (1)

M. Ben-Ezra, A. Zomet, and S. K. Nayar, “Video super-resolution using controlled subpixel detector shifts,” IEEE Trans. Pattern Anal. Mach. Intell. 27(6), 977–987 (2005).
[CrossRef]

IEEE Trans. Signal Process. (1)

P. Vandewalle, L. Sbaiz, J. Vandewalle, and M. Vetterli, “Super-resolution from unregistered and totally aliased signals using subspace methods,” IEEE Trans. Signal Process. 55(7), 3687–3703 (2007).
[CrossRef]

IEEE/OSA J Display Technol. (1)

R. Lu, X. Zhu, S. T. Wu, Q. Hong, and T. X. Wu, “Ultrawide-View Liquid Crystal Displays,” IEEE/OSA J Display Technol. 1(1), 3–14 (2005).
[CrossRef]

IEEE/OSA J, Display Technol. (1)

S. Gauza, X. Zhu, W. Piecek, R. Dabrowski, and S. T. Wu, ““Fast Switching Liquid Crystals for Color-Sequential LCDs, ” IEEE/OSA J, Display Technol. 3(3), 250–252 (2007).
[CrossRef]

Int. J. Imaging Syst. Technol. (1)

E. Choi, J. Choi, and M. G. Kang, “Super-resolution approach to overcome physical limitations of imaging sensors: an overview,” Int. J. Imaging Syst. Technol. 14(2), 36–46 (2004).
[CrossRef]

J. Opt. Soc. Am. A (1)

Opt. Express (2)

Opt. Lett. (1)

Other (5)

A. Mohan, X. Huang, J. Tumblin, and R. Raskar, “Sensing increased image resolution using aperture masks,” in Proceedings of the 2008 IEEE Computer Society Conference on Computer Vision Pattern Recognition (2008).

C. Y. Gao, and N. Ahuja, “A refractive camera for acquiring stereo and super-resolution images,” in Proceedings of the 2006 IEEE Computer Society Conference on Computer Vision Pattern Recognition (2006), pp. 2316–2323.

J. M. Liu, Photonic Devices (Cambridge University Press, 2005), Chap. 1.

K. Nishiyama, M. Okita, S. Kawaguchi, K. Teranishi, and R. Takamatsu, “32” WXGA LCD TV using OCB Mode, low temperature p-Si TFT and blinking backlight technology,” in SID Tech. Dig.36(1), 132–135 (2005).

D. Keren, S. Peleg, and R. Brada, “Image sequence enhancement using sub-pixel displacements,” in Proceedings of the 2006 IEEE Computer Society Conference on Computer Vision Pattern Recognition (1988), pp. 742–746.

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