Predicting the Quality of Fused Long Wave Infrared and Visible Light Images

2017 ◽  
Vol 26 (7) ◽  
pp. 3479-3491 ◽  
Author(s):  
David Eduardo Moreno-Villamarin ◽  
Hernan Dario Benitez-Restrepo ◽  
Alan Conrad Bovik
Keyword(s):  
Visible Light ◽  
Long Wave ◽  
Long Wave Infrared

scholarly journals Simulation of the Operation of a Single Pixel Camera with Compressive Sensing in the Long-Wave Infrared

2021 ◽  
Vol 25 (2) ◽  
pp. 53-60
Author(s):  
Anna Szajewska
Keyword(s):  
Case Analysis ◽  
Calibration Method ◽  
Reconstruction Error ◽  
Infrared Observation ◽  
Long Wave ◽  
Reference Images ◽  
The Impact ◽  
Long Wave Infrared ◽  
Single Pixel

Imaging with the use of a single pixel camera and based on compressed sensing (CS) is a new and promising technology. The use of CS allows reconstruction of images in various spectrum ranges depending on the spectrum sensibility of the used detector. During the study image reconstruction was performed in the LWIR range based on a thermogram from a simulated single pixel camera. For needs of reconstruction CS was used. A case analysis showed that the CS method may be used for construction of infrared-based observation single pixel cameras. This solution may also be applied in measuring cameras. Yet the execution of a measurement of radiation temperature requires calibration of results obtained by CS reconstruction. In the study a calibration method of the infrared observation camera was proposed and studies were carried out of the impact exerted by the number of measurements made on the quality of reconstruction. Reconstructed thermograms were compared with reference images of infrared radiation. It has been ascertained that the reduction of the reconstruction error is not directly in proportion to the number of collected samples being collected. Based on a review of individual cases it has been ascertained that apart from the number of collected samples, an important factor that affects the reconstruction fidelity is the structure of the image as such. It has been proven that estimation of the error for reconstructed thermograms may not be based solely on the quantity of executed measurements.

Growth dynamics and photoresponse of the Wadsley phase V6O13 crystals

2020 ◽  
Vol 8 (19) ◽  
pp. 6470-6477
Author(s):  
Wen Zeng ◽  
Xiaoguo Fu ◽  
Li Yu ◽  
Tingting Shi ◽  
Pengyi Liu ◽  
...  
Keyword(s):  
Crystal Growth ◽  
Visible Light ◽  
Optoelectronic Devices ◽  
Growth Dynamics ◽  
Infrared Region ◽  
Long Wave ◽  
Long Wave Infrared

The mechanism and dynamics of V6O13 crystal growth were systematically studied. The photoresponse performance of V6O13 optoelectronic devices from visible light to long-wave infrared region was studied, and the photoresponse mechanism was discussed.

scholarly journals Design of a Dual-Band Compact Integrated Remote Sensing System for Visible Light and Long-Wave Infrared

2021 ◽  
Vol 11 (20) ◽  
pp. 9370
Author(s):  
Ruichang Li ◽  
Gangyi Zou ◽  
Liangjie Feng ◽  
Xuewu Fan
Keyword(s):  
Visible Light ◽  
Environmental Changes ◽  
Imaging System ◽  
Integrated System ◽  
Dual Band ◽  
Modulation Transfer ◽  
Infrared Band ◽  
Light Band ◽  
Long Wave ◽  
Long Wave Infrared

This paper presents a design of a dual-band integrated space telescope system for visible light and long-wave infrared. The system can simultaneously image the visible light band of 450–900 nm and the long-wave infrared band of 7700–10,500 nm. The dual-band integrated imaging system can freely switch the observation band to adapt to different scenes and environmental changes. The camera can also further expand its capabilities in the fields of multi-spectral observation and low-light observation by collocation with different detectors. This design is based on a coaxial reflection system, the two bands share the camera's primary and secondary mirrors, and the separation of the two bands is achieved through a separate field of view design. After simulation, the average Modulation Transfer Function (MTF) value of the visible light band of the system at 50 lp/mm (line pairs per millimeter) reaches 0.45, and the average MTF value of the long-wave infrared band at 50 lp/mm reaches 0.36. In addition, tolerance analysis, ambient temperature analysis and transmittance analysis of the integrated system are carried out in this paper to further improve the integrated system scheme, and the feasibility of the system is further verified.

RxCADRE 2008: Wildfire Airborne Sensor Program - Lite uncalibrated long wave infrared image mosaics

2016 ◽  
Author(s):  
Andrew T. Hudak ◽  
Benjamin C. Bright ◽  
Robert L. Kremens ◽  
Matthew B. Dickinson ◽  
Matthew G. Alden
Keyword(s):  
Infrared Image ◽  
Long Wave ◽  
Long Wave Infrared

scholarly journals A Bi-Spectral Microbolometer Sensor for Wildfire Measurement

Sensors ◽  
2021 ◽  
Vol 21 (11) ◽  
pp. 3690
Author(s):  
Denis Dufour ◽  
Loïc Le Noc ◽  
Bruno Tremblay ◽  
Mathieu N. Tremblay ◽  
Francis Généreux ◽  
...  
Keyword(s):  
Low Resource ◽  
Long Wave ◽  
Radiative Power ◽  
Infrared Radiances ◽  
Moderate Scale ◽  
Long Wave Infrared ◽  
Detector Type ◽  
Experimental Burns ◽  
Fire Radiative Power

This study describes the development of a prototype bi-spectral microbolometer sensor system designed explicitly for radiometric measurement and characterization of wildfire mid- and long-wave infrared radiances. The system is tested experimentally over moderate-scale experimental burns coincident with FLIR reference imagery. Statistical comparison of the fire radiative power (FRP; W) retrievals suggest that this novel system is highly reliable for use in collecting radiometric measurements of biomass burning. As such, this study provides clear experimental evidence that mid-wave infrared microbolometers are capable of collecting FRP measurements. Furthermore, given the low resource nature of this detector type, it presents a suitable option for monitoring wildfire behaviour from low resource platforms such as unmanned aerial vehicles (UAVs) or nanosats.

Long-wave infrared sub-monolayer quantum dot quantum cascade photodetector

2020 ◽  
pp. 1-1
Author(s):  
Zhijian Shen ◽  
Zhuo Deng ◽  
Xuyi Zhao ◽  
Jian Huang ◽  
Lu Yao ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Quantum Cascade ◽  
Long Wave ◽  
Long Wave Infrared
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