| Records |
| Author |
Bisketzis, N.; Polymeropoulos, G.; Topalis, F. V. |
Title  |
A Mesopic Vision Approach for a Better Design of Road Lighting. |
Type |
Journal Article |
| Year |
2004 |
Publication |
WSEAS Transactions on Circuits and Systems |
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| Volume |
3 |
Issue |
5 |
Pages |
1380–1385 |
| Keywords |
Lighting |
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| Call Number |
LoNNe @ kagoburian @ |
Serial |
626 |
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| Author |
Fiorentin, P.; Boscaro, F. |
| Title |
A method for measuring the light output of video advertising reproduced by LED billboards |
Type |
Journal Article |
| Year |
2019 |
Publication |
Measurement |
Abbreviated Journal |
Measurement |
| Volume |
138 |
Issue |
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Pages |
25-33 |
| Keywords |
Lighting; Energy; Instrumentation; Planning; Light-emitting diode displays; Photometry; Video recording; Image analysis; CCD image sensors; Luminance; Glare |
| Abstract |
Improving knowledge of the light output of digital billboards is important to better assess their effect on driver distraction when they are installed along roads. In this work the emission of an LED based billboard is measured when playing advertising video-clips. In particular the average and the maximum values of the luminance are evaluated. The same video-clips are also analyzed when shown on an LCD monitor, aiming at separating the variability of the videos and of the playing device. The results allow to evaluate an utilization factor of the billboard: the videos have an average luminance around 11% and a peak luminance of 35% of the maximum luminance obtainable from the billboard. The power consumption of the billboard is measured, aside the photometric analysis. The luminance of the device are found linearly dependent on both the power and the effective current absorbed by the device from the grid, with a discrepancy within 6%. It could be a useful information for billboard manufacturers to qualify their product when they do not own photometric instruments. |
| Address |
Department of Industrial Engineering, University of Padova, Padova, Italy; pietro.fiorentin(at)unipd.it |
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Elsevier |
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| Language |
English |
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English |
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0263-2241 |
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GFZ @ kyba @ |
Serial |
2214 |
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| Author |
Sciezor, T. |
| Title |
A new astronomical method for determining the brightness of the night sky and its application to study long-term changes in the level of light pollution |
Type |
Journal Article |
| Year |
2013 |
Publication |
Monthly Notices of the Royal Astronomical Society |
Abbreviated Journal |
Monthly Notices of the Royal Astronomical Society |
| Volume |
435 |
Issue |
1 |
Pages |
303-310 |
| Keywords |
light pollution methods; data analysis methods; observational site testing; comets; measurements; light pollution; skyglow |
| Abstract |
In this paper, I present a new method that has been developed for determining the brightness of a cloudless night sky, on the basis of widely available amateur observations of comets. The tests show the correctness of the method, which makes it possible to determine the level of light pollution, defined as the brightness of the artificial sky glow, through the use of the archival observations of comets. The use of data bases of comet observations in Poland in the period 1994–2009 has led to a positive verification of the known model map of the brightness of the night sky. Also, it has been possible to find changes in the level of light pollution in this period, at the selected observation sites. |
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0035-8711 |
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IDA @ john @ |
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266 |
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| Author |
Wang, G., Wang, S., Zhang, L., Sun, F., Yan, F., & Yang, X. |
| Title |
A New Light Control Method with Charge Induction of Moving Target |
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Journal Article |
| Year |
2019 |
Publication |
IEEE Sensors Journal |
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| Keywords |
Lighting; Instrumentation |
| Abstract |
Intelligent lamp control system has been widely studied all over the world because of its energy saving and social effect. In this paper, a new intelligent lamp control method based on charge induction for moving target is proposed. The detection model is established with the surface charge induction and verified by a luggage detection experiment. The intelligent lamp control system using the detection method is carried out. The performance of the system demonstrates that the proposed method can detect the moving target at any orientation whatever with or without occlusion and the detection distance can reach more than 3 m for the pedestrian. |
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IDA @ intern @ |
Serial |
2470 |
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| Author |
Levin, N.; Johansen, K.; Hacker, J.M.; Phinn, S. |
| Title |
A new source for high spatial resolution night time images -- The EROS-B commercial satellite |
Type |
Journal Article |
| Year |
2014 |
Publication |
Remote Sensing of Environment |
Abbreviated Journal |
Remote Sensing of Environment |
| Volume |
149 |
Issue |
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Pages |
1-12 |
| Keywords |
Night lights; EROS-B; Land cover; Land use; Fine spatial resolution; remote sensing; satellite; light at night |
| Abstract |
City lights present one of humankind's most unique footprints on Earth as seen from space. Resulting light pollution from artificial lights obscures the night sky for astronomy and has negative impacts on biodiversity as well as on human health. However, remote sensing studies of night lights to date have been mostly limited to coarse spatial resolution sensors such as the DMSP-OLS. Here we present a new source for high spatial resolution mapping of night lights from space, derived from a commercial satellite. We tasked the Israeli EROS-B satellite to acquire two night-time light images (at a spatial resolution of 1 m) of Brisbane, Australia, and analyzed their radiometric quality and content with respect to land cover and land use. The spatial distribution of night lights as imaged by EROS-B corresponded with night-time images acquired by an airborne camera, although EROS-B was not as sensitive to low light levels. Using land cover and land use data at the statistical local area level, we could statistically explain 89% of the variability in night-time lights. Arterial roads and commercial and service areas were found to be some of the brightest land use types. Overall, we found that EROS-B imagery provides fine spatial resolution images of night lights, opening new avenues for studying light pollution in cities worldwide. |
| Address |
Department of Geography, The Hebrew University of Jerusalem, Mt. Scopus, Jerusalem 91905, Israel. |
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Elsevier |
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| ISSN |
0034-4257 |
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IDA @ john @ |
Serial |
307 |
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