Results 21 to 30 of about 47,342 (264)

Use of the SAR Shadowing Effect for Deforestation Detection with Sentinel-1 Time Series

open access: yesRemote Sensing, 2018
To detect deforestation using Earth Observation (EO) data, widely used methods are based on the detection of temporal changes in the EO measurements within the deforested patches. In this paper, we introduce a new indicator of deforestation obtained from
Alexandre Bouvet   +4 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

Wormhole shadows [PDF]

open access: yesPhysical Review D, 2015
8 pages, 8 figure. Published in Phys.Rev.
Ohgami, Takayuki, Sakai, Nobuyuki
openaire   +2 more sources

Shadow-Based Hierarchical Matching for the Automatic Registration of Airborne LiDAR Data and Space Imagery

open access: yesRemote Sensing, 2016
The automatic registration of LiDAR data and optical images, which are heterogeneous data sources, has been a major research challenge in recent years. In this paper, a novel hierarchical method is proposed in which the least amount of interaction of a ...
Alireza Safdarinezhad   +2 more
doaj   +1 more source

DARCLOS: a cloud shadow detection algorithm for TROPOMI [PDF]

open access: yesAtmospheric Measurement Techniques, 2022
Cloud shadows are observed by the TROPOMI satellite instrument as a result of its high spatial resolution compared to its predecessor instruments. These shadows contaminate TROPOMI's air quality measurements, because shadows are generally not taken into ...
V. J. H. Trees   +7 more
doaj   +1 more source

Infants' perception of lightness changes related to cast shadows. [PDF]

open access: yesPLoS ONE, 2017
When humans perceive the lightness of an object's surface in shadows there is an implicit assumption that cast shadows dim the surface. In two experiments, we investigated whether 5- to 8-month-old infants make this assumption about shadows. According to
Kazuki Sato   +2 more
doaj   +1 more source

The Shadow Effect on Surface Biophysical Variables Derived from Remote Sensing: A Review

open access: yesLand, 2022
In remote sensing (RS), shadows play an important role, commonly affecting the quality of data recorded by remote sensors. It is, therefore, of the utmost importance to detect and model the shadow effect in RS data as well as the information that is ...
Seyed Kazem Alavipanah   +15 more
doaj   +1 more source

The Study of Laban Movement Analysis (LMA) in Shadow Puppets Theatre

open access: yesEstudios sobre el Mensaje Periodístico, 2017
The art of shadow play within the Malaysian Wayang Kulit is unique with rich articulated translucent shadow movement but unfortunately it is slowly dying.
Dahlan Abdul Ghani
doaj   +1 more source

Rationalized Algorithmic-Aided Shaping a Responsive Curvilinear Steel Bar Structure

open access: yesBuildings, 2019
The correlation of the architectural form and the structural system should be the basis for rational shaping. This paper presents algorithmic-aided shaping curvilinear steel bar structures for roofs, using modern digital tools, working in the environment
Jolanta Dzwierzynska
doaj   +1 more source

Shadow Trading

open access: yesThe Accounting Review, 2020
ABSTRACT We investigate whether corporate insiders attempt to circumvent insider trading restrictions by using their private information to facilitate trading in economically linked firms, a phenomenon we call “shadow trading.” Using measures of informed trading to proxy for shadow trading, we find increased levels of informed trading ...
Mehta, Mihir N.   +2 more
openaire   +2 more sources

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