Results 11 to 20 of about 1,577,958 (284)
Angular Rolling of the Hollow Flanges of Pipe Joints
Metals, 2021 The paper considers a three-stage technology for angular rolling of the pipe workpiece. This technology facilitates the expansion of the range of flange parts available by eliminating a number of drawbacks of the known methods of metal forming.
Pavel Kononov +3 more
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Surface Approximation by Means of Gaussian Process Latent Variable Models and Line Element Geometry
Mathematics, 2023 The close relation between spatial kinematics and line geometry has been proven to be fruitful in surface detection and reconstruction. However, methods based on this approach are limited to simple geometric shapes that can be formulated as a linear ...
Ivan De Boi, Carl Henrik Ek, Rudi Penne
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Crystals, 2021 A model is developed for the formation of porous intragranular architectonics of nanostructured polycrystalline layers of lead chalcogenides for photodetectors and IR emitters.
Yuliya Mikhailovna Spivak +4 more
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Step-By-Step Modeling and Demetallation Experimental Study on the Porous Structure in Zeolites
Molecules, 2022 The organization of microporous space in zeolites is discussed. A new step-by-step model is proposed that explains the principles of organizing the hierarchy of microporous space at the stage of assembling zeolites from elements of minimal size: a ...
Pavel Kononov +4 more
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On the Angular Control of Rotating Lasers by Means of Line Calculus on Hyperboloids
Sensors, 2023 We propose a new paradigm for modelling and calibrating laser scanners with rotation symmetry, as is the case for lidars or for galvanometric laser systems with one or two rotating mirrors.
Rudi Penne +2 more
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SnO2-Based Porous Nanomaterials: Sol-Gel Formation and Gas-Sensing Application
Gels, 2023 Porous nanocomposites using two (tin dioxide–silica dioxide) and three (tin dioxide–indium oxide-silica dioxide)-component systems for gas sensors were created with the sol–gel method.
Irina Kononova +2 more
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Line Geometry and Camera Autocalibration [PDF]
Journal of Mathematical Imaging and Vision, 2008 We provide a completely new rigorous matrix formulation of the absolute quadratic complex (AQC), given by the set of lines intersecting the absolute conic. The new results include closed-form expressions for the camera intrinsic parameters in terms of the AQC, an algorithm to obtain the dual absolute quadric from the AQC using straightforward matrix ...
José Ignacio Ronda +2 more
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Geometry of two-parametric family of linear line complexes
Lietuvos Matematikos Rinkinys, 2005 In this article differential geometry of two-parametric family of linear line complexes in the three-dimensional projective space is considered.
Kazimieras Navickis
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The Plumb-Line Matching Algorithm for UAV Oblique Photographic Photos
Remote Sensing, 2023 Building facades has always been a challenge for feature matching in oblique photogrammetry due to weak textures, non-Lambertian objects, severe occlusion, and distortion.
Xinnai Zhang +4 more
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On-Line Reconstruction of CAD Geometry [PDF]
2013 International Conference on 3D Vision, 2013 In reverse engineering and computer-aided design (CAD) applications point cloud data is usually manually scanned, reconstructed, and post-processed in separated steps. When point cloud data resulting from a scanning process do not satisfy certain necessary reconstruction requirements, one must perform scanning again to enable proper reconstruction.
Klaus Denker +4 more
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