Results 31 to 40 of about 2,313 (216)
NURBS approximation of surface/surface intersection curves
Advances in Computational Mathematics, 1994 To compute parametric representations for non-parametric algebraic intersection curves requires approximation. In this paper, the authors present algorithms to construct a piecewise rational \(B\)-spline approximation to a space curve, which comes from the intersection of two implicitly defined surfaces, or the intersection of two parametric defined ...
Chandrajit L. Bajaj, Guoliang Xu
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International Journal of Antennas and Propagation, 2015 Although the uniform theory of diffraction (UTD) could be theoretically applied to arbitrarilyshaped convex objects modeled by nonuniform rational B-splines (NURBS), one of the great challenges in calculation of the UTD surface diffracted fields is the ...
Song Fu +4 more
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Developable Surface Patches Bounded by NURBS Curves [PDF]
Journal of Computational Mathematics, 2020 17 pages, 17 figures.
Leonardo Fernández-Jambrina +1 more
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Computational Visual Media, 2017 Existing shape models with spherical topology are typically designed either in the discrete domain using interpolating polygon meshes or in the continuous domain using smooth but non-interpolating schemes such as subdivision or NURBS. Both polygon models
D. Schmitter +2 more
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A GEOMETRIC PROCESSING WORKFLOW FOR TRANSFORMING REALITY-BASED 3D MODELS IN VOLUMETRIC MESHES SUITABLE FOR FEA [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2017 Conservation of Cultural Heritage is a key issue and structural changes and damages can influence the mechanical behaviour of artefacts and buildings. The use of Finite Elements Methods (FEM) for mechanical analysis is largely used in modelling stress ...
S. Gonizzi Barsanti, G. Guidi
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3D Reality-Based Survey and Retopology for Structural Analysis of Cultural Heritage
Sensors, 2022 Cultural heritage’s structural changes and damages can influence the mechanical behaviour of artefacts and buildings. The use of finite element methods (FEM) for mechanical analysis is largely used in modelling stress behaviour. The workflow involves the
Sara Gonizzi Barsanti +2 more
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Watermarking Algorithms for 3D NURBS Graphic Data
EURASIP Journal on Advances in Signal Processing, 2004 Two watermarking algorithms for 3D nonuniform rational B-spline (NURBS) graphic data are proposed: one is appropriate for the steganography, and the other for watermarking.
Jae Jun Lee, Nam Ik Cho, Sang Uk Lee
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, 2017 <p>This project aims to implement the NURBS curve and surface computation algorithms in native Python with minimum possible dependencies.</p> <p>Currently, the Curve and Surface classes can be used for data ...
Onur R. Bingol (8222130), Onur R. Bingol
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Accuracy assessment of mine walls’ surface models derived from terrestrial laser scanning
International Journal of Coal Science & Technology, 2018 The monitoring of highwall slopes at open-pit mines is an important task to ensure safe mining. For this reason, several techniques such as total station, radar, terrestrial Light Detection and Ranging (LIDAR) can be employed for surface measurement. The
Nguyen Quoc Long +6 more
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Machines, 2023 As the applications for freeform optical surfaces continue to grow, the need for high-precision machining methods is becoming more and more of a necessity. Different toolpath strategies for the ultra-high precision turning of freeform surfaces can have a
Xuchu Wang +4 more
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