| Records |
| Author |
Mills, S.; Miller, S. |
| Title |
VIIRS Day/Night Band--Correcting Striping and Nonuniformity over a Very Large Dynamic Range |
Type |
Journal Article |
| Year |
2016 |
Publication |
Journal of Imaging |
Abbreviated Journal |
J. Imaging |
| Volume |
2 |
Issue |
1 |
Pages |
9 |
| Keywords |
Instrumentation |
| Abstract |
The Suomi National Polar-orbiting (NPP) Visible Infrared Imaging Radiometer Suite (VIIRS) Day-Night Band (DNB) measures visible and near-infrared light extending over seven orders of magnitude of dynamic range. This makes radiometric calibration difficult. We have observed that DNB imagery has striping, banding and other nonuniformities—day or night. We identified the causes as stray light, nonlinearity, detector crosstalk, hysteresis and mirror-side variation. We found that these affect both Earth-view and calibration signals. These present an obstacle to interpretation by users of DNB products. Because of the nonlinearity we chose the histogram matching destriping technique which we found is successful for daytime, twilight and nighttime scenes. Because of the very large dynamic range of the DNB, we needed to add special processes to the histogram matching to destripe all scenes, especially imagery in the twilight regions where scene illumination changes rapidly over short distances. We show that destriping aids image analysts, and makes it possible for advanced automated cloud typing algorithms. Manual or automatic identification of other features, including polar ice and gravity waves in the upper atmosphere are also discussed. In consideration of the large volume of data produced 24 h a day by the VIIRS DNB, we present methods for reducing processing time. |
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2313-433X |
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LoNNe @ kyba @ |
Serial |
1400 |
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| Author |
Warrant, E. |
| Title |
Superior vision in nocturnal insects inspires new night vision technologies |
Type |
Newspaper Article |
| Year |
2016 |
Publication |
SPIE Newsroom |
Abbreviated Journal |
SPIE Newsroom |
| Volume |
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Issue |
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Pages |
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| Keywords |
Vision; Animals; Instrumentation |
| Abstract |
Algorithms that dramatically improve the quality of video sequences captured in very dim light have been developed on the basis of the neural mechanisms in nocturnal insects with excellent visual capabilities. |
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1818-2259 |
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LoNNe @ kyba @; GFZ @ kyba @ |
Serial |
1418 |
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| Author |
Levin, N.; Phinn, S. |
| Title |
Illuminating the capabilities of Landsat 8 for mapping night lights |
Type |
Journal Article |
| Year |
2016 |
Publication |
Remote Sensing of Environment |
Abbreviated Journal |
Remote Sensing of Environment |
| Volume |
182 |
Issue |
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Pages |
27-38 |
| Keywords |
Remote Sensing; Instrumentation |
| Abstract |
Remote sensing of night-lights has been enhanced in recent years with the availability of the new VIIRS Day and Night band, the commercial EROS-B satellite and astronaut photographs from the International Space Station. However, dedicated space-borne multispectral sensors offering radiance calibrated night lights imagery are yet to be launched. Here we examined the capabilities of Landsat 8 to acquire night time light images of the Earth. Examining seven night-time Landsat 8 scenes, we found that brightly lit areas in both urban (Berlin, Las Vegas, Nagoya and Tel-Aviv) and gas flares (Basra, Kuwait) areas were detected in all eight bands of Landsat 8. The threshold for detection of lit areas was approximately 0.4 W/m2/μm/sr in bands 1–5 and 8 of Landsat 8. This threshold level was higher than Landsat dark noise levels, and slightly lower than post launch Landsat 8 OLI band dependent noise equivalent radiance difference levels. Drawing on this, we call on the USGS to plan an annual night-time acquisition of urban and gas flares areas globally, and to enable the performance of the future Landsat 10 to be established in a way that it will be sensitive enough to image the Earth at night, thus performing as Nightsat during the night. |
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0034-4257 |
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LoNNe @ kyba @ |
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1452 |
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Zoogman, P.; Liu, X.; Suleiman, R.M.; Pennington, W.F.; Flittner, D.E.; Al-Saadi, J.A.; Hilton, B.B.; Nicks, D.K.; Newchurch, M.J.; Carr, J.L.; Janz, S.J.; Andraschko, M.R.; Arola, A.; Baker, B.D.; Canova, B.P.; Chan Miller, C.; Cohen, R.C.; Davis, J.E.; Dussault, M.E.; Edwards, D.P.; Fishman, J.; Ghulam, A.; González Abad, G.; Grutter, M.; Herman, J.R.; Houck, J.; Jacob, D.J.; Joiner, J.; Kerridge, B.J.; Kim, J.; Krotkov, N.A.; Lamsal, L.; Li, C.; Lindfors, A.; Martin, R.V.; McElroy, C.T.; McLinden, C.; Natraj, V.; Neil, D.O.; Nowlan, C.R.; OSullivan, E.J.; Palmer, P.I.; Pierce, R.B.; Pippin, M.R.; Saiz-Lopez, A.; Spurr, R.J.D.; Szykman, J.J.; Torres, O.; Veefkind, J.P.; Veihelmann, B.; Wang, H.; Wang, J.; Chance, K. |
| Title |
Tropospheric emissions: Monitoring of pollution (TEMPO) |
Type |
Journal Article |
| Year |
2016 |
Publication |
Journal of Quantitative Spectroscopy and Radiative Transfer |
Abbreviated Journal |
Journal of Quantitative Spectroscopy and Radiative Transfer |
| Volume |
186 |
Issue |
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Pages |
17-39 |
| Keywords |
Instrumentation, Remote Sensing |
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0022-4073 |
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LoNNe @ kyba @ |
Serial |
1498 |
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| Author |
Bierman, A.; Figueiro, M.G.; Rea, M.S. |
| Title |
Measuring and predicting eyelid spectral transmittance |
Type |
Journal Article |
| Year |
2011 |
Publication |
Journal of Biomedical Optics |
Abbreviated Journal |
J Biomed Opt |
| Volume |
16 |
Issue |
6 |
Pages |
067011 |
| Keywords |
Instrumentation; Human Health |
| Abstract |
The purpose of the present study was to objectively quantify the spectral transmittance of the eyelid. Reported here are data acquired using a technique that was developed to provide practical and accurate measurements of eyelid transmittance across the visible portion of the electromagnetic spectrum. The empirical data were analyzed in terms of the absorption and scattering characteristics of the constituents of skin to develop a method for predicting eyelid transmission. Results showed that the eyelid has a much higher optical density at short wavelengths than previously published. The mean +/- standard deviation (s.d.) optical density of the eyelid from 450 to 650 nm was 2.1 +/- 0.3 with an optical density range among subjects of approximately 1.0. The study results indicate that skin pigmentation is poorly correlated with eyelid transmission; eyelid transmission is most affected by wavelength-independent macromolecules in the eyelid as well as its overall thickness. |
| Address |
Rensselaer Polytechnic Institute, Lighting Research Center, 21 Union Street, Troy, New York 12180, USA |
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English |
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1083-3668 |
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| Notes |
PMID:21721832 |
Approved |
no |
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LoNNe @ kyba @ |
Serial |
1530 |
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