Results 11 to 20 of about 421,436 (163)

Complex Uncertainty of Surface Data Modeling via the Type-2 Fuzzy B-Spline Model

open access: yesMathematics, 2021
This paper discusses the construction of a type-2 fuzzy B-spline model to model complex uncertainty of surface data. To construct this model, the type-2 fuzzy set theory, which includes type-2 fuzzy number concepts and type-2 fuzzy relation, is used to ...
Rozaimi Zakaria   +3 more
doaj   +3 more sources

An Optical Method for the Rapid Measurement of Corrugated Plate Depth Based on Line Laser Sensor [PDF]

open access: yesSensors
This paper presents a non-contact depth detection method for corrugated heat exchanger plates, aiming to improve measurement efficiency and accuracy.
Jie Chen   +5 more
doaj   +2 more sources

Shape optimization and mechanical properties analysis of the free-form surface [PDF]

open access: yesScientific Reports
Architectural forms in practical engineering projects exhibit significant diversity and complexity, often exceeding the representational capacity of traditional curves or even B-spline curves.
Cui Guoyong, Cui Changyu
doaj   +2 more sources

Quadratic B-Spline Surfaces with Free Parameters for the Interpolation of Curve Networks

open access: yesMathematics, 2022
In this paper, we propose a method for constructing spline surfaces interpolating a B-spline curve network, allowing the presence of free parameters, in order to model the interpolating surface.
Paola Lamberti, Sara Remogna
doaj   +1 more source

Oceanic Mesoscale Eddies Identification Using B-Spline Surface Fitting Model Based on Along-Track SLA Data

open access: yesRemote Sensing, 2022
Gridded reanalysis data has been widely used in oceanic mesoscale eddy identification. However, there is little research on identifying oceanic mesoscale eddies based on along-track data.
Luochuan Xu   +5 more
doaj   +1 more source

Developing an Approach to Redesign Freeform Surfaces Using B-Spline Technique [PDF]

open access: yesEngineering and Technology Journal, 2018
In product design process trends currently tend to use sculpture surface (freeform surface) that modeling by using (NURBS, B-spline, Bezier) technique to suit aesthetic, functional and manufacturability requirements.
Amjad Adulghafour, Ahmed Hassan
doaj   +1 more source

APPLICATION OF B-SPLINE METHOD IN SURFACE FITTING PROBLEM [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2019
Fitting a smooth surface on irregular data is a problem in many applications of data analysis. Spline polynomials in different orders have been used for interpolation and approximation in one or two-dimensional space in many researches. These polynomials
F. Esmaeili   +3 more
doaj   +1 more source

Optimization and Modeling of a Spatial CAM Mechanism for a Two-Dimensional Plunger Electro-Hydraulic Pump

open access: yesIEEE Access, 2023
Traditional cam movements in piston pumps follow a non-stopping motion law, resulting in insufficient smoothness in plunger stroke changes. Consequently, this directly impacts the theoretical flow rate of the pump.
Xinguo Qiu   +5 more
doaj   +1 more source

SURFACE APPROXIMATION OF COASTAL REGIONS: LR B-SPLINE FOR DETECTION OF DEFORMATION PATTERN [PDF]

open access: yesISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2022
Geospatial data acquisition of terrains produces huge, noisy and scattered point clouds. An efficient use of the acquired data requires structured and compact data representations. Working directly in a point cloud is often not appealing.
G. Kermarrec, V. Skytt, T. Dokken
doaj   +1 more source

Construction of B-spline surface from cubic B-spline asymptotic quadrilateral

open access: yesJournal of Advanced Mechanical Design, Systems, and Manufacturing, 2017
Asymptote is widely used in astronomy, mechanics, architecture and relevant subjects. In this paper, by analyzing the Frenet frame and the Darboux frame of a curve on the surface, the necessary and sufficient conditions for a quadrilateral boundary being
Hui WANG, Chun-Gang ZHU, Cai-Yun LI
doaj   +1 more source

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