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Multiplexed Illumination

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Computer Vision
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Synonyms

Multiplexed sensing

Definition

In multiplexed illumination, multiple light sources are used simultaneously in different measurements of intensity data arrays. Then, the intensity under individual sources is derived by computational demultiplexing. This scheme enhances the results: it increases the signal-to-noise ratio of intensity data arrays, without increasing acquisition resources such as time. It also improves dynamic range.

Background

Measuring a set of variables is a common task. For example, in computer vision and graphics, there is a need to acquire multiple images under various lighting conditions; in spectroscopy, there is a need to measure several wavelength bands; in tomography, measurements are taken at a set of different directions; in microscopy, there is a set of focal planes or a set of measurements under several fluorescence excitation wavelength bands. Usually these variables are measured sequentially.

The measurements are subjected to noise, which may...

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References

  1. Agrawal A, Raskar R (2009) Optimal single image capture for motion deblurring. In: Proceedings of the IEEE conference on computer vision pattern recognition (CVPR), Miami

    Google Scholar 

  2. Alterman M, Schechner YY, Weiss A (2010) Multiplexed fluorescence unmixing. In: IEEE ICCP, Cambridge

    Book  Google Scholar 

  3. Ben-Ezra M, Wang J, Wilburn B, Li X, Ma L (2008) An LED-only BRDF measurement device. In: IEEE conference on computer vision pattern recognition (CVPR), Anchorage

    Google Scholar 

  4. Cull EC, Gehm ME, Brady DJ, Hsieh CR, Momtahan O, Adibi A (2007) Dispersion multiplexing with broadband filtering for miniature spectrometers. Appl Opt 46:365–374

    Article  Google Scholar 

  5. Harwit M, Sloane NJA (1979) Hadamard transform optics. Academic, New York

    MATH  Google Scholar 

  6. Levoy M, Chen B, Vaish V, Horowitz M, McDowall I, Bolas M (2004) Synthetic aperture confocal imaging. ACM Trans Graph 23:825–834

    Article  Google Scholar 

  7. Liang CK, Lin TH, Wong BY, Liu C, Chen HH (2008) Programmable aperture photography: multiplexed light field acquisition. In: ACM TOG. ACM Trans Graph, New York, pp 1–10

    Google Scholar 

  8. Narasimhan S, Koppal S, Yamazaki S (2008) Temporal dithering of illumination for fast active vision. In: Proceedings of the European conference on computer vision (ECCV), Marseille, pp 830–844

    Google Scholar 

  9. Park J, Lee M, Grossberg MD, Nayar SK (2007) Multispectral imaging using multiplexed illumination. In: Proceedings of the IEEE ICCV, Rio de Janeiro

    Book  Google Scholar 

  10. Raskar R, Agrawal A, Tumblin J (2006) Coded exposure photography: motion deblurring using fluttered shutter. ACM Trans Graph 25:795–804

    Article  Google Scholar 

  11. Ratner N, Schechner YY (2007) Illumination multiplexing within fundamental limits. In: Proceedings of the IEEE conference on computer vision pattern recognition (CVPR), Minneapolis

    Google Scholar 

  12. Ratner N, Schechner YY, Goldberg F (2007) Optimal multiplexed sensing: bounds, conditions and a graph theory link. Opt Express 15:17072–17092

    Article  Google Scholar 

  13. Schechner YY, Nayar SK, Belhumeur PN (2007) Multiplexing for optimal lighting. IEEE Trans PAMI 29:1339–1354

    Article  Google Scholar 

  14. Wuttig A (2005) Optimal transformations for optical multiplex measurements in the presence of photon noise. Appl Opt 44:2710–2719

    Article  Google Scholar 

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Correspondence to Marina Alterman .

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Alterman, M. (2014). Multiplexed Illumination. In: Ikeuchi, K. (eds) Computer Vision. Springer, Boston, MA. https://doi.org/10.1007/978-0-387-31439-6_543

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