Results 181 to 190 of about 2,832 (214)

Image stabilization for SWIR advanced optoelectronic device

SPIE Proceedings, 2015
At long ranges and under low visibility conditions, Advanced Optoelectronic Device provides the signal-to-noise ratio and image quality in the Short-wave Infra-red – SWIR (wavelengths between 1,1 ÷2,5 μm), significantly better than in the near wave infrared – NWIR and visible spectral bands [1,2].
Paul Schiopu, Adrian Manea, Ionica Cristea, Neculai Grosu, Anca-Ileana Craciun, Alexandru Craciun, Dana Granciu   +6 more
openaire   +1 more source

Hyperspectral imaging of bruises in the SWIR spectral region

SPIE Proceedings, 2012
Optical diagnostics of bruised skin might provide important information for characterization and age determination of such injuries. Hyperspectral imaging is one of the optical techniques that have been employed for bruise characterization. This technique combines high spatial and spectral resolution and makes it possible to study both chromophore ...
Lise L. Randeberg, Julio Hernandez-Palacios   +1 more
openaire   +1 more source

A Novel Method to Remove Interference Fringes for Hyperspectral SWIR Imagers

IEEE Transactions on Geoscience and Remote Sensing, 2020
A hyperspectral short-wave infrared (SWIR) imager with a HgCdTe focal plane detector usually suffers from interference fringes in spectral and spatial dimension due to the etalon effect. It can cause a modulation of sensitivity higher than 15% when the spectral resolution is higher than 10 nm.
Yue Xu, Shaobiao Xie, Jian Liang, Dexin Sun, Naiming Qi, Yinnian Liu   +5 more
openaire   +1 more source

Band to band co-registration of SWIR images

Proceedings of IGARSS '93 - IEEE International Geoscience and Remote Sensing Symposium, 2002
The paper deals with a correlation method to estimate the amount of parallax of a short wave infrared radiometer which has a multi-spectral linear detector array assembly located on then focal plane. With equally spaced pre-resampled image data from the FFT method, a band to band corresponding point was found as a peak of the inner product of two image
M. Ono, T. Yamazaki, K. Yoshida
openaire   +1 more source

SWIR imaging for facial image capture through tinted materials

SPIE Proceedings, 2012
The use of short wave infrared (SWIR) imaging and illumination technology is at the forefront of system development for military and law enforcement in both night and daytime operational scenarios1 2 3 4 . Along with enabling nighttime operations, a secondary benefit of SWIR imaging is that it offers the possibility to capture images through tinted ...
Jason Ice, Neeru Narang, Cameron Whitelam, Nathan Kalka, Larry Hornak, Jeremy Dawson, Thirimachos Bourlai   +6 more
openaire   +1 more source

Performance characterization of VNIR and SWIR spectropolarimetric imagers

SPIE Proceedings, 2015
Two compact prototype spectropolarimetric imagers operating in the visible-near-infrared (VNIR) and shortwave-infrared (SWIR) regions were developed. Each of these imagers uses a noncollinear acousto-optic tunable filter (AOTF) and collects data with four linear incident polarizations—vertical, horizontal and ±45°.
openaire   +1 more source

SWIR hyperspectral imaging detector for surface residues

SPIE Proceedings, 2013
ChemImage has developed a SWIR Hyperspectral Imaging (HSI) sensor which uses hyperspectral imaging for wide area surveillance and standoff detection of surface residues. Existing detection technologies often require close proximity for sensing or detecting, endangering operators and costly equipment.
Matthew P. Nelson, Paul Mangold, Nathaniel Gomer, Oksana Klueva, Patrick Treado   +4 more
openaire   +1 more source

SWIR active polarization imaging for material identification

SPIE Proceedings, 2013
ABSTRACT Nighttime active SWIR imaging has resolution, size, weight, and power consumption advantages over passiveMWIR and LWIR imagers for applications involving target identi cation. We propose that the target discrim-ination capability of active SWIR systems can be extended further by exerting polarization control over theillumination source and ...
Daniel A. LeMaster, Adoum H. Mahamat, Bradley M. Ratliff, Andrey S. Alenin, J. Scott Tyo, Bradley M. Koch   +5 more
openaire   +1 more source

High-resolution SWIR arrays for imaging at night

SPIE Proceedings, 2004
We describe innovations in short wave infrared (SWIR) InGaAs focal plane arrays and cameras which now allow imaging under starlight only conditions at video rates. These lattice matched In.53Ga.47As imagers detect 0.9 μm to 1.7 μm SWIR band light, which is generally reflected from the imaged target.
Martin H. Ettenberg, Michael A. Blessinger, Matthew T. O'Grady, Shi-Che Huang, Robert M. Brubaker, Marshall J. Cohen   +5 more
openaire   +1 more source

Dual‐Wavelength NIR/SWIR Vein Imaging

Frontiers in Optics 2007/Laser Science XXIII/Organic Materials and Devices for Displays and Energy Conversion, 2007
The Luminetx VeinViewer uses polarized NIR light to view veins and reduce the visibility of the skin. Skin visibility can be reduced further by combining two images, one with NIR and one with SWIR light.
H.D. Zeman, G. Lovhoiden, S. Ganesh
openaire   +1 more source