Results 21 to 30 of about 101,051 (295)

Identification of a Regular Black Hole by Its Shadow

open access: yesUniverse, 2019
We study shadows of regular rotating black holes described by the axially symmetric solutions asymptotically Kerr for a distant observer, obtained from regular spherical solutions of the Kerr−Schild class specified by T t t = T r r ( p r
Irina Dymnikova, Kirill Kraav
doaj   +1 more source

The Shadow

open access: yesProceedings of the 7th International Conference on Movement and Computing, 2020
We propose1 a 10 minutes excerpt from the performance The Shadow, after H. C. Andersen, directed and performed by Georges Gagnere. The demo introduces a physical hyper-actor playing with musical and visual instruments in a theatrical mixed reality. The focus is on the visual instrument that consists in five avatars acting in a virtual shadow theater ...
openaire   +3 more sources

Road Lane Detection Robust to Shadows Based on a Fuzzy System Using a Visible Light Camera Sensor

open access: yesSensors, 2017
Recently, autonomous vehicles, particularly self-driving cars, have received significant attention owing to rapid advancements in sensor and computation technologies.
Toan Minh Hoang   +4 more
doaj   +1 more source

Enhancement of Urban Floodwater Mapping From Aerial Imagery With Dense Shadows via Semisupervised Learning

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2022
Timely and accurate mapping of floodwater in urban areas from aerial imagery is critical to support emergency response and rescue work. However, massive shadows cast by buildings and trees over dense built-up urban areas can cause a significant ...
Yongjun He   +3 more
doaj   +1 more source

Shadow lattices and shadow codes

open access: yesDiscrete Mathematics, 2000
Shadow codes of self-dual codes have been used to derive upper bounds on the minimum distance of these codes, and to construct self-dual codes of larger lengths. Shadows of unimodular lattices have been used to derive upper bounds on the minimum norm of Type I lattices.
Steven T. Dougherty   +2 more
openaire   +3 more sources

Using Physics-Based Digital Twins and Extended Reality for the Safety and Ergonomics Evaluation of Cobotic Workstations

open access: yesFrontiers in Virtual Reality, 2022
Cobotic workstations in industrial plants involve a new kind of collaborative robots that can interact with operators. These cobots enable more flexibility and they can reduce the cycle time and the floor space of the workstation.
Vincent Weistroffer    +4 more
doaj   +1 more source

Cost of energy and mutual shadows in a two-axis tracking PV system [PDF]

open access: yes, 2012
The performance improvement obtained from the use of trackers in a PV system cannot be separated from the higher requirement of land due to the mutual shadows between generators.
Perpiñan Lamigueiro, Oscar
core   +1 more source

Tool for Semiautomatic Labeling of Moving Objects in Video Sequences: TSLAB

open access: yesSensors, 2015
An advanced and user-friendly tool for fast labeling of moving objects captured with surveillance sensors is proposed, which is available to the public. This tool allows the creation of three kinds of labels: moving objects, shadows and occlusions. These
Carlos Cuevas   +2 more
doaj   +1 more source

Statistical Modeling of Shadows in SAR Imagery

open access: yesMathematics, 2023
Shadows are a special distortion in synthetic aperture radar (SAR) imaging. They often hamper proper image understanding and target recognition but also offer useful information, and therefore, the statistical modeling of SAR image shadows is imperative.
Xiaojun Luo   +4 more
doaj   +1 more source

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