نتایج جستجو برای: lwir

تعداد نتایج: 274  

Journal: :Physics of Plasmas 2022

Understanding the formation and long-timescale evolution of atmospheric plasmas produced by ultrashort, long wavelength IR (LWIR) pulses is an important but partially understood problem. Of particular interest are in air with a peak laser intensity $\sim$10$^{12}$ W/cm$^2$, so-called clamping observed LWIR guiding experiments where tunneling multi-photon ionization operative at near-IR or short...

2013
Hamilton Scott Clouse Wesam Sakla

Polarimetric video is currently utilized for object detection and 3D inference. We demonstrate further novel analyses and applications of the polarization phenomenon. The first effort here described utilizes a physics-based model for emission polarization in the long-wave infrared band to segment the pixels in each frame into classes representing different materials in the scene. In the second ...

2004
A. G. Mares R. C. Olsen P. G. Lucey

This work examines the process of detecting and quantifying volcanic SO2 plumes using the Airborne Hyperspectral Infrared Imager (AHI) developed by the University of Hawaii. AHI was flown over Pu'u'O'o Vent of Kilauea Volcano in Hawaii to collect data on SO2 plumes. AHI is a LWIR pushbroom imager sensitive to the 7.5 11.5 μ region. Spectral analysis and mapping tools were used to identify and c...

2009
Heydi Mendez Vazquez César San Martín Josef Kittler Yenisel Plasencia Edel B. García Reyes

In this paper, the performance of Local Binary Patterns method is evaluated in face recognition with long-wave infrared images. Long-wave infrared images are invariant to illumination conditions, but at the same time are affected by a fixed-pattern noise inherent to this technology. The fixed-pattern noise usually is compensated with a nonuniformity correction method. Here, the robustness of Lo...

Journal: :Remote Sensing 2022

The accuracy of brightness temperature (BT) from the Cross-track Infrared Sounder (CrIS) onboard Suomi National Polar-orbiting Partnership (S-NPP) satellite and NOAA-20 is estimated using Constellation Observing System for Meteorology, Ionosphere, Climate 2 (COSMIC-2) radio occultation (RO) wet retrievals (temperature water vapor profiles) as input to Community Radiative Transfer Model (CRTM). ...

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