Results 11 to 20 of about 1,485,171 (302)

DirecTES: A Direct Method for Land and Sea Surface Temperature and Emissivity Separation for Thermal Infrared Sensors—Application to TRISHNA and ECOSTRESS

open access: yesRemote Sensing, 2023
The coming years will see the launch of several missions (TRISHNA, LSTM, SBG), which will acquire images in four or more spectral bands in thermal infrared (TIR) at high spatial resolution (~50–60 m) and with high temporal revisit (~2–3 days).
Sébastien Marcq   +3 more
doaj   +1 more source

Computational Imaging for Simultaneous Image Restoration and Super-Resolution Image Reconstruction of Single-Lens Diffractive Optical System

open access: yesApplied Sciences, 2022
Diffractive optical elements (DOEs) are difficult to apply in natural scenes imaging covering the visible bandwidth-spectral due to their strong chromatic aberration and the decrease in diffraction efficiency.
Kai Liu   +8 more
doaj   +1 more source

Hyperspectral Anomaly Detection with Differential Attribute Profiles and Genetic Algorithms

open access: yesRemote Sensing, 2023
Anomaly detection is hampered by band redundancy and the restricted reconstruction ability of spectral–spatial information in hyperspectral remote sensing.
Hanyu Wang   +7 more
doaj   +1 more source

Multi-Objective Parametric Optimization Design for Mirrors Combined with Non-Dominated Sorting Genetic Algorithm

open access: yesApplied Sciences, 2023
The process of intelligent multi-objective parametric optimization design for mirrors is discussed in detail in this paper, with the error of the mirror surface shape and the total mass being examined as the optimization objectives.
Lu Sun   +5 more
doaj   +1 more source

Calibration and evaluation of optical systems for full-field strain measurement [PDF]

open access: yes, 2007
The design and testing of a reference material for the calibration of optical systems for strain measurement is described, together with the design and testing of a standardized test material that allows the evaluation and assessment of fitness for ...
Cross   +13 more
core   +1 more source

Measuring Quantum Optical Hamiltonians [PDF]

open access: yesPhysical Review Letters, 1998
We show how recent state-reconstruction techniques can be used to determine the Hamiltonian of an optical device that evolves the quantum state of radiation. A simple experimental setup is proposed for measuring the Liouvillian of phase-insensitive devices.
D'Ariano, G. M., Maccone, L.
openaire   +2 more sources

Nonlinear quantum optical computing via measurement [PDF]

open access: yes, 2004
We show how the measurement induced model of quantum computation proposed by Raussendorf and Briegel [Phys. Rev. Letts. 86, 5188 (2001)] can be adapted to a nonlinear optical interaction. This optical implementation requires a Kerr nonlinearity, a single
Hutchinson, G. D., Milburn, G. J.
core   +1 more source

Practical Calibration Method for Aerial Mapping Camera Based on Multiple Pinhole Collimator

open access: yesIEEE Access, 2020
Calibration of aerial mapping camera has an important influence on the applications of earth observation. However, the traditional aerial mapping cameras calibrations depend on large-scale calibration target or collimated light, moreover, it is difficult
Guoqin Yuan   +5 more
doaj   +1 more source

Infrared Dim Small Target Detection Based on Nonconvex Constraint with L1–L2 Norm and Total Variation

open access: yesRemote Sensing, 2023
Infrared dim small target detection has received a lot of attention, because it is a crucial component of the IR search and track systems (IRST). The robust principal component analysis (RPCA) is a common detection framework, which works with poor ...
Yu Shao   +5 more
doaj   +1 more source

Optimization of optical data transmitters for 40-Gb/s lightwave systems using frequency resolved optical gating [PDF]

open access: yes, 2002
The measurement technique of frequency resolved optical gating has been used to optimize the phase of a 40-GHz train of optical pulses generated using a continuous-wave laser gated with an external modulator. This technique will be vital for optimization
Barry, Liam P.   +5 more
core   +1 more source

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