Results 21 to 30 of about 1,598,510 (299)
Shadow detection for mobile robots: Features, evaluation, and datasets [PDF]
Spatial Cognition & Computation, 2017 Shadows have long been a challenging topic for computer vision. This challenge is made even harder when we assume that the camera is moving, as many existing shadow detection techniques require the creation and maintenance of a background model. This article explores the problem of shadow modelling from a moving viewpoint (assumed to be a robotic ...
Charles C. Newey +2 more
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Urban feature shadow extraction based on high-resolution satellite remote sensing images
Alexandria Engineering Journal, 2023 With the continuous increase in the resolution of high-resolution remote sensing satellite images, shadows have increasingly impacted feature target recognition and classification in images, urban reconstruction, and image interpretation.
Lu Shi, Yue-feng Zhao
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Cast shadow segmentation using invariant color features [PDF]
Computer Vision and Image Understanding, 2004 Shadows arc integral parts of natural scenes and one of the elements contributing to naturalness of synthetic scenes. In many image analysis and interpretation applications, shadows interfere with fundamental tasks such as object extraction and description. For this reason, shadow segmentation is an important step in image analysis.
Salvador, E. +2 more
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Moving Target Shadow Analysis and Detection for ViSAR Imagery
Remote Sensing, 2021 The video synthetic aperture radar (ViSAR) is a new application in radar techniques. ViSAR provides high- or moderate-resolution SAR images with a faster frame rate, which permits the detection of the dynamic changes in the interested area.
Zhihua He +5 more
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Shadow Detection by Three Shadow Models with Features Robust to Illumination Changes
Procedia Computer Science, 2014 AbstractComputer vision methods need to deal with shadows explicitly because shadows often have a negative effect on the results computed. A new shadow detection method is proposed. The new method constructs three shadow models. Three features robust to illumination changes are used to construct the models. The method uses color information, Peripheral
Shuya Ishida +4 more
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Shadow economy in the context of threats to the economic security of the state
Путеводитель предпринимателя, 2022 The article is devoted to the study of the essence and various consequences of the shadow economy. The most significant feature of the shadow economy is the fact that it has a significant negative impact on the economy of the region, country and/or ...
M. M. Begichev +2 more
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Shadow features and shadow bands in the paramagnetic state of cuprate superconductors [PDF]
Physical Review B, 1997 The conditions for the precursors of antiferromagnetic bands in cuprate superconductors are studied using weak-to-intermediate coupling approach. It is shown that there are, in fact, three different precursor effects due to the proximity to antiferromagnetic instability: i) the shadow band which associated with new pole in the Green's function ii) the ...
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Identifying the Shadow Component in the Banking Sector
Вестник Российского экономического университета имени Г. В. Плеханова, 2020 The subject of research in the article is the process of shaping the shadow capital in the shadow banking sector. Its goal is to identify specific features of shadow economic relations leading to shadow capital shaping in the Russian banking sector ...
K. V. Ekimova +2 more
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Classical shadow tomography with locally scrambled quantum dynamics
Physical Review Research, 2023 We generalize the classical shadow tomography scheme to a broad class of finite-depth or finite-time local unitary ensembles, known as locally scrambled quantum dynamics, where the unitary ensemble is invariant under local-basis transformations.
Hong-Ye Hu, Soonwon Choi, Yi-Zhuang You
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Moving Shadow Detection in Video Using Cepstrum [PDF]
, 2010 Moving shadows constitute problems in various applications such as image segmentation and object tracking. The main cause of these problems is the misclassification of the shadow pixels as target pixels.
Cogun, Fuat, Cetin, Ahmet Enis
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