Abstract

Much light in architectural spaces is absorbed by objects and never perceived by occupants. The colour appearance of objects illuminated by light spectra that minimized this absorption was determined. Colour differences were calculated for 15 reflective samples when illuminated by various coloured test light sources and reference white illuminants. Coloured test spectral power distributionos (SPDs) can reduce energy consumption by up to 44% while maintaining identical colour appearance of illuminated objects. Energy consumption can be reduced further, but with noticeable colour shifts. Results quantify the trade-off between colour fidelity and energy consumption with this approach.

© 2015 Optical Society of America

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References

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  1. P. Waide and S. Tanishima, Light's Labour's Lost: Policies for Energy-efficient Lighting (OECD Publishing, 2006).
  2. W. R. McCluney, Introduction to Radiometry and Photometry (Artech House Publ., 1994).
  3. R. A. Newcombe, S. Izadi, O. Hilliges, D. Molyneaux, D. Kim, A. Davison, P. Kohi, J. Shotton, S. Hodges, and A. Fitzgibbon, “KinectFusion: Real-time dense surface mapping and tracking,” in 10th IEEE International Symposium on Mixed and Augmented Reality (ISMAR), (IEEE, 2011), pp. 127–136.
    [Crossref]
  4. C. C. Miller, Y. Ohno, W. Davis, Y. Zong, and K. Dowling, “NIST spectrally tunable lighting facility for color rendering and lighting experiments” in Proceedings of CIE 2009: Light and Lighting Conference, (Light & Engineering, 2009).
  5. W. Davis and Y. Ohno, “Color quality scale,” Opt. Eng. 49(3), 033602 (2010).
    [Crossref]
  6. R. W. G. Hunt and R. M. Pointer, Measuring Colour (John Wiley & Sons, 2011), Chap. 3.

Davison, A.

R. A. Newcombe, S. Izadi, O. Hilliges, D. Molyneaux, D. Kim, A. Davison, P. Kohi, J. Shotton, S. Hodges, and A. Fitzgibbon, “KinectFusion: Real-time dense surface mapping and tracking,” in 10th IEEE International Symposium on Mixed and Augmented Reality (ISMAR), (IEEE, 2011), pp. 127–136.
[Crossref]

Fitzgibbon, A.

R. A. Newcombe, S. Izadi, O. Hilliges, D. Molyneaux, D. Kim, A. Davison, P. Kohi, J. Shotton, S. Hodges, and A. Fitzgibbon, “KinectFusion: Real-time dense surface mapping and tracking,” in 10th IEEE International Symposium on Mixed and Augmented Reality (ISMAR), (IEEE, 2011), pp. 127–136.
[Crossref]

Hilliges, O.

R. A. Newcombe, S. Izadi, O. Hilliges, D. Molyneaux, D. Kim, A. Davison, P. Kohi, J. Shotton, S. Hodges, and A. Fitzgibbon, “KinectFusion: Real-time dense surface mapping and tracking,” in 10th IEEE International Symposium on Mixed and Augmented Reality (ISMAR), (IEEE, 2011), pp. 127–136.
[Crossref]

Hodges, S.

R. A. Newcombe, S. Izadi, O. Hilliges, D. Molyneaux, D. Kim, A. Davison, P. Kohi, J. Shotton, S. Hodges, and A. Fitzgibbon, “KinectFusion: Real-time dense surface mapping and tracking,” in 10th IEEE International Symposium on Mixed and Augmented Reality (ISMAR), (IEEE, 2011), pp. 127–136.
[Crossref]

Izadi, S.

R. A. Newcombe, S. Izadi, O. Hilliges, D. Molyneaux, D. Kim, A. Davison, P. Kohi, J. Shotton, S. Hodges, and A. Fitzgibbon, “KinectFusion: Real-time dense surface mapping and tracking,” in 10th IEEE International Symposium on Mixed and Augmented Reality (ISMAR), (IEEE, 2011), pp. 127–136.
[Crossref]

Kim, D.

R. A. Newcombe, S. Izadi, O. Hilliges, D. Molyneaux, D. Kim, A. Davison, P. Kohi, J. Shotton, S. Hodges, and A. Fitzgibbon, “KinectFusion: Real-time dense surface mapping and tracking,” in 10th IEEE International Symposium on Mixed and Augmented Reality (ISMAR), (IEEE, 2011), pp. 127–136.
[Crossref]

Kohi, P.

R. A. Newcombe, S. Izadi, O. Hilliges, D. Molyneaux, D. Kim, A. Davison, P. Kohi, J. Shotton, S. Hodges, and A. Fitzgibbon, “KinectFusion: Real-time dense surface mapping and tracking,” in 10th IEEE International Symposium on Mixed and Augmented Reality (ISMAR), (IEEE, 2011), pp. 127–136.
[Crossref]

Molyneaux, D.

R. A. Newcombe, S. Izadi, O. Hilliges, D. Molyneaux, D. Kim, A. Davison, P. Kohi, J. Shotton, S. Hodges, and A. Fitzgibbon, “KinectFusion: Real-time dense surface mapping and tracking,” in 10th IEEE International Symposium on Mixed and Augmented Reality (ISMAR), (IEEE, 2011), pp. 127–136.
[Crossref]

Newcombe, R. A.

R. A. Newcombe, S. Izadi, O. Hilliges, D. Molyneaux, D. Kim, A. Davison, P. Kohi, J. Shotton, S. Hodges, and A. Fitzgibbon, “KinectFusion: Real-time dense surface mapping and tracking,” in 10th IEEE International Symposium on Mixed and Augmented Reality (ISMAR), (IEEE, 2011), pp. 127–136.
[Crossref]

Shotton, J.

R. A. Newcombe, S. Izadi, O. Hilliges, D. Molyneaux, D. Kim, A. Davison, P. Kohi, J. Shotton, S. Hodges, and A. Fitzgibbon, “KinectFusion: Real-time dense surface mapping and tracking,” in 10th IEEE International Symposium on Mixed and Augmented Reality (ISMAR), (IEEE, 2011), pp. 127–136.
[Crossref]

Other (6)

P. Waide and S. Tanishima, Light's Labour's Lost: Policies for Energy-efficient Lighting (OECD Publishing, 2006).

W. R. McCluney, Introduction to Radiometry and Photometry (Artech House Publ., 1994).

R. A. Newcombe, S. Izadi, O. Hilliges, D. Molyneaux, D. Kim, A. Davison, P. Kohi, J. Shotton, S. Hodges, and A. Fitzgibbon, “KinectFusion: Real-time dense surface mapping and tracking,” in 10th IEEE International Symposium on Mixed and Augmented Reality (ISMAR), (IEEE, 2011), pp. 127–136.
[Crossref]

C. C. Miller, Y. Ohno, W. Davis, Y. Zong, and K. Dowling, “NIST spectrally tunable lighting facility for color rendering and lighting experiments” in Proceedings of CIE 2009: Light and Lighting Conference, (Light & Engineering, 2009).

W. Davis and Y. Ohno, “Color quality scale,” Opt. Eng. 49(3), 033602 (2010).
[Crossref]

R. W. G. Hunt and R. M. Pointer, Measuring Colour (John Wiley & Sons, 2011), Chap. 3.

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Figures (7)

Fig. 1
Fig. 1 Simplified layout of lighting system that detects the position and colour of objects and tunes the SPD of the lighting to minimize absorption.
Fig. 2
Fig. 2 Relative power as a function of wavelength for test SPDs (solid lines) and incandescent reference illuminant (dotted lines). Reflectance as a function of wavelength (dashed lines) for a saturated yellow object (sample 5).
Fig. 3
Fig. 3 Effect of bandwidth on energy consumption (dashed line, right y-axis) and colour differences (solid line, left y-axis) for sample 2, while baseline is held constant at 0.00 (relative power) for the top plot and 0.50 (relative power) for the bottom plot, for a starting point of 544 nm, relative to illumination by an incandescent light source.
Fig. 4
Fig. 4 Effect of baseline power on energy consumption (dashed line, right y-axis) and colour differences (solid line, left y-axis) for sample 2, while bandwidth is held constant at 3 nm for the top plot and 261 nm for the bottom plot, for a starting point of 544 nm, relative to illumination by incandescent light source.
Fig. 5
Fig. 5 Effect of object reflectance types on energy saving and starting point values when ΔE*ab<10.
Fig. 6
Fig. 6 Effect of object reflectance types on energy saving and starting point values when ΔE*ab<1.
Fig. 7
Fig. 7 Effect of object reflectance types on energy saving and starting point values when there are two starting points and no additional bandwidth or baseline.

Tables (3)

Tables Icon

Table 1 Energy saving potential of the test SPDs relative to reference illuminants when target colour difference ΔE*ab<10.

Tables Icon

Table 2 Energy saving potential of the test SPDs relative to reference illuminants when target colour difference ΔE*ab<1.

Tables Icon

Table 3 Energy saving potential of the test SPDs relative to reference light sources when SPD consists of only two single wavelengths as starting points, and no baseline or additional bandwidth.

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