BRDF Data for Coniferous Forests Acquired from Multispectral Camera Onboard a Unmanned Aerial Vehicle [PDF]
Geo Data, 2023 Bidirectional reflectance distribution function (BRDF) is a distribution of directional reflectance for varying viewing and solar geometry. BRDF of a target is important in processing optical image data from satellites, because the observed radiance has ...
Seungil Baek +3 more
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ORION software tool for the geometrical calibration of all-sky cameras.
PLoS ONE, 2022 This paper presents the software application ORION (All-sky camera geOmetry calibRation from star positIONs). This software has been developed with the aim of providing geometrical calibration to all-sky cameras, i.e. assess which sky coordinates (zenith
Juan Carlos Antuña-Sánchez +7 more
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A cloud detection neural network for above-aircraft clouds using airborne cameras
Frontiers in Remote Sensing, 2023 For aerosol, cloud, land, and ocean remote sensing, the development of accurate cloud detection methods, or cloud masks, is extremely important. For airborne passive remotesensing, it is also important to identify when clouds are above the aircraft since
Joseph Nied +15 more
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Bridge Crack Inspection Efficiency of an Unmanned Aerial Vehicle System with a Laser Ranging Module
Sensors, 2022 In this study, an unmanned aerial vehicle (UAV) with a camera and laser ranging module was developed to inspect bridge cracks. Four laser ranging units were installed adjacent to the camera to measure the distance from the camera to the object to ...
Szu-Pyng Kao +5 more
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Imaging and EISCAT radar measurements of an auroral prebreakup event [PDF]
Annales Geophysicae, 1996 The results of coordinated EISCAT and TV-camera observations of a prebreakup event on 15 November 1993 have been considered. The variations of the luminosity of two parallel auroral arcs, plasma depletion on the poleward edge of one of these arcs as ...
V. Safargaleev +4 more
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Polarization imaging over sea surface - a method for measurements of Stokes components angular distribution [PDF]
Journal of the European Optical Society-Rapid Publications, 2015 This article describes a method for determining the angular distribution of light polarization over a roughened surface of the sea. Our method relies on measurements of the Stokes vector elements using a polarization imaging camera that operates using ...
Freda W., Piskozub J., Toczek H.
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Validation of spectral sky radiance derived from all-sky camera images – a case study [PDF]
Atmospheric Measurement Techniques, 2014 Spectral sky radiance (380–760 nm) is derived from measurements with a hemispherical sky imager (HSI) system. The HSI consists of a commercial compact CCD (charge coupled device) camera equipped with a fish-eye lens and provides hemispherical sky ...
K. Tohsing +3 more
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OPTICAL POLARIZED EFFECTS FOR QUANTITATIVE REMOTE SENSING [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2020 Polarization is one of the four basic physical properties of solar radiation. After the solar radiation reaches the surface of these media, it reflects, scatters or refracts, and exhibits different degrees of polarization.
L. Yan +6 more
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BRDF LABORATORY MEASUREMENTS USING A CAMERA-AIDED SPECTRORADIOMETER [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2022 Numerous natural surfaces observed using Remote Sensing do not reflect light as Lambertian surfaces. Instead, their reflection is highly dependent on two main directions: the direction of the light source and the observation viewing angle, which ...
E. Roitberg +3 more
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Fruit Detectability Analysis for Different Camera Positions in Sweet-Pepper
Sensors, 2014 For robotic harvesting of sweet-pepper fruits in greenhouses a sensor system is required to detect and localize the fruits on the plants. Due to the complex structure of the plant, most fruits are (partially) occluded when an image is taken from one ...
Jochen Hemming +3 more
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