Results 81 to 90 of about 1,053,247 (346)
IEEE AccessFlooding is one of the most common natural disasters, causing emergencies and significant damage to infrastructure. Amid crises, entities such as the World Food Program employ remotely sensed images, usually via drones, to analyze the situation quickly ...
Vladyslav Polushko +8 more
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On the Fuzzy Opening Morphological Operator
Ingeniería, 2017 Context: Interior operators have interesting properties that can be used in detecting relevant features in digital images. In this respect, it is pertinent to study the behaviour of the opening and erosion operators from the perspective of fuzzy ...
Wilson Javier Forero Baquero +1 more
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Hybrid tomography for conductivity imaging [PDF]
, 2011 Hybrid imaging techniques utilize couplings of physical modalities -- they are called hybrid, because, typically, the excitation and measurement quantities belong to different modalities. Recently there has been an enormous research interest in this area because these methods promise very high resolution.
arxiv +1 more source
Accelerated Alternating Minimization for X-ray Tomographic Reconstruction [PDF]
arXiv, 2021 While Computerized Tomography (CT) images can help detect disease such as Covid-19, regular CT machines are large and expensive. Cheaper and more portable machines suffer from errors in geometry acquisition that downgrades CT image quality. The errors in geometry can be represented with parameters in the mathematical model for image reconstruction.
arxiv
Elasticity of Diametrically Compressed Microfabricated Woodpile Lattices
Advanced Engineering Materials, EarlyView.Modulus–porosity relationship is derived for woodpile lattices with struts under diametrical compression. The formula presented here that Young's modulus is proportional to the square of the volume fraction E˜ρ2$E \sim \left(\rho\right)^{2}$ is shown to be consistent with computations and laboratory experiments on 3D‐printed samples.
Faezeh Shalchy, Atul Bhaskar
wiley +1 more source
Lower secondary students’ views about mathematicians depicted as mathematics teachers
LUMAT, 2019 The present study examined lower secondary students’ images of mathematics, comprised of stated attitudes to and perceived needs for mathematics, and views about mathematicians and their work.
Vesife Hatisaru
doaj +1 more source
Mathematics of Photoacoustic and Thermoacoustic Tomography [PDF]
Handbook of Mathematical Methods in Imaging, Vol. 2, 2010, pp.817
- 866, 2009 This is the manuscript of the chapter for a planned Handbook of Mathematical Methods in Imaging that surveys the mathematical models, problems, and algorithms of the Thermoacoustic (TAT) and Photoacoustic (PAT) Tomography. TAT and PAT represent probably the most developed of the several novel ``hybrid'' methods of medical imaging.
arxiv
Symmetries in TEM imaging of crystals with strain [PDF]
arXiv, 2022 TEM images of strained crystals often exhibit symmetries, the source of which is not always clear. To understand these symmetries we distinguish between symmetries that occur from the imaging process itself and symmetries of the inclusion that might affect the image.
arxiv
Advanced Engineering Materials, EarlyView.Spatial distribution of microstructure in Inconel 718 3D‐printed with bidirectional strategy with no rotation and chessboard strategy is studied. The former results in a highly ordered arrangement of coarse grains separated by line clusters of dislocation‐dense fine grains. This arrangement is disrupted by the chessboard strategy.
Jalal Al‐Lami +4 more
wiley +1 more source
Modeling Variational Inpainting Methods With Splines
Frontiers in Applied Mathematics and Statistics, 2019 Mathematical methods of image inpainting often involve the discretization of a given continuous model. Typically, this is done by a pointwise discretization.
Florian Boßmann +2 more
doaj +1 more source