Results 51 to 60 of about 421,436 (163)

Oceanic Mesoscale Eddy Fitting Using Legendre Polynomial Surface Fitting Model Based on Along-Track Sea Level Anomaly Data

Remote Sensing
Exploring the spatial distribution of sea surface height involves two primary methodologies: utilizing gridded reanalysis data post-secondary processing or conducting direct fitting along-track data.
Chunzheng Kong, Yibo Zhang, Jie Shi, Xianqing Lv   +3 more
doaj   +1 more source

A new approach for lofted B-spline surface approximation to scanned data

, 2010
This paper addresses the problem of B-spline surface approximation to rows of points by B-spline surface lofting. Lofting is a well known surface create technique and has been used in CAD and CAGD.
Cheng XG(程仙国), Bian HY(卞宏友), Liu WJ(刘伟军)   +2 more
core  

B-spline surface reconstruction and direct slicing from point clouds

, 2006
The issue of surface reconstruction and slicing from point clouds has been receiving extensive attention recently. When using the B-spline surface fitting technique, the difficulty of parameterization exists.
Sun YW(孙玉文), Jia ZY(贾振元), Guo Dongming, Liu WJ(刘伟军)   +3 more
core  

Local Progressive and Iterative Approximation for Least Squares B-spline Curve and Surface Fitting [PDF]

Jisuanji kexue
Progressive and iterative approximation for least squares B-spline curve and surface fitting(LSPIA),as an effective method for fitting large data,has attracted the attention of many researchers.To address the problem that the LSPIA algorithm is less ...
GAO Yang, JIANG Yini, LIN Hongwei
doaj   +1 more source

Quadratic B-spline curve interpolation

, 2001
Traditional approach in performing even-degree B-spline curve/surface interpolation would generate undesired results. In this paper, we show that the problem is with the selection of interpolation parameter values, not with even-degree B-spline curves ...
Barsky, B.A., Cheng, Fuhua, Wang, Xuefu
core   +1 more source

An alternative methodology to represent B-spline surface for applications in virtual reality environment

, 2013
B-spline representation is one of the main methods for free-form surface modeling and has become the standard for CAD systems. However, in Virtual Reality (VR) environment, when a B-spline surface deforms, the blending functions need to be continuously ...
Knopf, George K., Pungotra, Harish, Canas, Roberto   +2 more
core   +1 more source

Modeling Implied Volatility Surface Using B-Splines with Time-Dependent Coefficients Predicted by Tree-Based Machine Learning Methods

Mathematics
Implied volatility is known to have a string structure (smile curve) for a given time to maturity and can be captured by the B-spline. The parameters characterizing the curves can change over time, which complicates the modeling of the implied volatility
Zihao Chen, Yuyang Li, Cindy Long Yu
doaj   +1 more source

Prediction Method for the Surface Damage in Splined Couplings [PDF]

, 2013
The primary purpose of my PhD thesis was to develop design criteria and to verify procedures about fretting wear, that are applicable to crowned spline couplings of a power transmission system of the aeroengines.
Cuffaro, Vincenzo
core   +1 more source

Adaptive B-Spline-Based Distortion Modeling and Calibration for Cameras with Freeform Lenses

Applied Sciences
Freeform lenses introduce spatially varying and asymmetric distortions that cannot be reliably modeled by conventional calibration frameworks. This work presents a calibration approach that represents the distortion field using a bicubic B-spline surface
Xiangyuan Wang, Bin Wang, Gang Li, Botao Jiang, Longxiang Huang, Yan Ma   +5 more
doaj   +1 more source

Implicit Uniform Rational Spline Reconstruction Method With Regularization Term

IEEE Access
To improve the accuracy of implicit curve reconstruction and reduce the occurrence of supplementary zero-level sets during the reconstruction process, we propose an implicit curve fitting method with a regularization term based on uniform rational B ...
Shenghan Huang
doaj   +1 more source