Results 11 to 20 of about 20,661 (163)

Interpolating Industrial Robot Orientation with Hermite Spline Curve Based on Logarithmic Quaternion

open access: yesXibei Gongye Daxue Xuebao, 2019
Smooth orientation planning has an important influence on the working quality and service life as for industrial robot. Based on the logarithmic quaternion, a compact method to map a spline curve from Cartesian space to quaternion space is proposed, and ...

doaj   +1 more source

Quadratic/linear rational spline interpolation

open access: yesMathematical Modelling and Analysis, 2013
We describe the construction of an interpolating quadratic/linear rational spline S of smoothness class C 2 for a strictly convex (or strictly concave) function y on [a, b].
Erge Ideon, Peeter Oja
doaj   +1 more source

Improved ensemble local mean decomposition based on cubic trigonometric cardinal spline interpolation and its application for rotating machinery fault diagnosis

open access: yesAdvances in Mechanical Engineering, 2020
Ensemble local mean decomposition has been gradually introduced into mechanical vibration signal processing due to its excellent performance in electroencephalogram signal analysis.
Pei Chen   +5 more
doaj   +1 more source

Trajectory Planning of Autonomous Underwater Vehicles Based on Gauss Pseudospectral Method

open access: yesSensors, 2023
This paper aims to address the obstacle avoidance problem of autonomous underwater vehicles (AUVs) in complex environments by proposing a trajectory planning method based on the Gauss pseudospectral method (GPM).
Wenyang Gan, Lixia Su, Zhenzhong Chu
doaj   +1 more source

Image interpolation by rational ball cubic B-spline representation and genetic algorithm

open access: yesAlexandria Engineering Journal, 2018
In this article a rational ball cubic B-spline representation based image interpolation scheme is proposed with tension parameter to interpolate two dimensional natural images.
Samreen Abbas   +2 more
doaj   +1 more source

Comparison Study on Linear Interpolation and Cubic B-Spline Interpolation Proper Orthogonal Decomposition Methods

open access: yesAdvances in Mechanical Engineering, 2013
In general, proper orthogonal decomposition (POD) method is used to deal with single-parameter problems in engineering practice, and the linear interpolation is employed to establish the reduced model.
Xiaolong Wang   +7 more
doaj   +1 more source

Numerical Solution of Saint-Venant Equation by Cubic B-spline Quasi-interpolation [PDF]

open access: yesJisuanji kexue, 2023
Firstly,the error estimates of cubic spline quasi-intepolating operators are derived for continuous differential function with different orders.Secondly,cubic B-spline quasi-interpolation is used to get the numerical solution of Saint-Venant equation ...
QIAN Jiang, ZHANG Ding
doaj   +1 more source

Comparison of selected splines for stem form modeling: A case study in Norway spruce

open access: yesAnnals of Forest Research, 2014
Natural cubic spline has been frequently used to represent stem forms, with other spline types rarely involved. Splines are a large class of functions and there are many other spline types which might serve that purpose.
Karel Kuželka, Róbert Marušák
doaj   +1 more source

PENALIZED SPLINE: A GENERAL ROBUST TRAJECTORY MODEL FOR ZIYUAN-3 SATELLITE [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2016
Owing to the dynamic imaging system, the trajectory model plays a very important role in the geometric processing of high resolution satellite imagery. However, establishing a trajectory model is difficult when only discrete and noisy data are available.
H. Pan, Z. Zou
doaj   +1 more source

SPLINE INTERPOLATION AND THE HIGHER DERIVATIVES [PDF]

open access: yesProceedings of the National Academy of Sciences, 1964
Edmund Landau was very much interested in the theory of approximation. It was he who inspired Dunham Jackson to do his fundamental work on the orders of best approximation. His proof of Weierstrass’ theorem by means of Landau’s singular integral is now classical. A new generalization of Weierstrass’ theorem found by a graduate student at the University
openaire   +2 more sources

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