Search
Now showing items 1-10 of 17
Enhancing far-field thermal emission with thermal extraction
(2013)
The control of thermal radiation is of great current importance for applications such as energy conversions and radiative cooling. Here we show theoretically that the thermal emission of a finite-size blackbody emitter can ...
Compact camera for multispectral and conventional imaging based on patterned filters
(2014)
A multispectral camera concept is presented. The concept is based on using a patterned filter in the focal plane, combined with scanning of the field of view. The filter layout has stripes of different bandpass filters ...
SYSIPHE system: A state of the art airborne hyperspectral imaging system. Initial results from the first airborne campaign
(2014)
SYSIPHE is an airborne hyperspectral imaging system, result of a cooperation between France (Onera and DGA) and Norway (NEO and FFI). It is a unique system by its spatial sampling -0.5m with a 500m swath at a ground height ...
Full characterization of spatial coregistration errors and spatial resolution in spectral imagers
(2018)
For multi- and hyperspectral imagers, the integrity of the spectral information depends critically on the spatial coregistration between bands. There is at present no commonly accepted way to fully specify coregistration ...
Combined range ambiguity resolution and noise reduction in lidar signal processing
(2018)
When the interval between transmitted pulses is shorter than the time of flight, it is not straightforward for a lidar to determine the distance uniquely. We present a method that uses varying pulse intervals, constructs ...
Thermal infrared reference sources fabricated from low-cost components and materials
(2018)
Mass markets, including mobile phones and automotive sensors, drive rapid developments of imaging technologies
toward high performance, low cost sensors, even for the thermal infrared. Good infrared calibration blackbody ...
Feasibility of a standard for full specification of spectral imager performance
(2017)
The current state of the art of specifying spectral imagers falls short of what is needed. Commercial datasheets do not adequately reflect the performance of hyperspectral imagers offered as standard products. In particular, ...
Measurement of point spread function for characterization of coregistration and resolution: Comparison of two commercial hyperspectral cameras
(2018)
For spectral cameras, the spatial resolution and coregistration of bands are important performance characteristics. The paper discusses how these can be quantified in a way that is relevant for the spectroscopic processing ...
Real-time anomaly detection in hyperspectral images using multivariate normal mixture models and GPU processing
(2009)
Hyperspectral imaging, which records a detailed spectrum of light arriving in each pixel, has many potential uses in remote sensing as well as other application areas. Practical applications will typically require real-time ...
Characterization of a compact 6-band multifunctional camera based on patterned spectral filters in the focal plane
(2014)
In some applications of multi- or hyperspectral imaging, it is important to have a compact sensor. The most compact spectral imaging sensors are based on spectral filtering in the focal plane. For hyperspectral imaging, ...