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Pregled bibliografske jedinice broj: 868461

Časopis

Autori: Ćurković, Milan; Vučina, Damir; Ćurković, Andrijana
Naslov: Enhanced 3D parameterization for integrated shape synthesis by fitting parameter values to point sets
Izvornik: Integrated computer-aided engineering (1069-2509) 24 (2017), 3; 241-260
Vrsta rada: članak
Ključne riječi: 3D shape parameterization, NURBS, enhanced non-linear fitting, integral dynamic surfaces
Sažetak:
Enhanced single-patch NURBS (Non-uniform rational B-splines) parameterization is developed based on fitting parameter values, capable of handling dynamically changing shapes. With respect to NURBS and T-splines, the proposed single-patch parameterizations results in lower dimensionality enabling optimizers to operate on geometric parameters. Avoiding subdivision surfaces and continuity problems for piecewise NURBS and reparameterizations for T-splines accelerates optimization. This parameterization may be an approximation or initial solution for piecewise NURBS and T-splines. These numerical benefits are accomplished using a multi-stage methodology. An augmented set of fitting variables is formulated beyond the weight factors and control points with parameter values of data points. This augmented set is structured to possess reasonable dimensionality. The developed non-linear fitting includes gradient-based minimization with respect to the augmented set and evolutionary error minimization using external functions. The benefits and potential difficulties of the procedure are evaluated thoroughly. The methodology is tested on engineering objects of high shape complexity and demonstrated to provide superior single- patch fitting performance compared to standard linear fitting methods. The developed numerical approach provides for the aspired main objective which is sufficiently accurate and numerically efficient dynamic shape parameterizaton using a compact set of shape parameters.
Projekt / tema: HRZZ-IP-2014-09-6130
Izvorni jezik: ENG
Rad je indeksiran u
bazama podataka:
Current Contents Connect (CCC)
Scopus
SCI-EXP, SSCI i/ili A&HCI
Science Citation Index Expanded (SCI-EXP) (sastavni dio Web of Science Core Collectiona)
Kategorija: Znanstveni
Znanstvena područja:
Matematika,Strojarstvo
URL Internet adrese: http://content.iospress.com/articles/integrated-computer-aided-engineering/ica541
http://content.iospress.com/articles/integrated-computer-aided-engineering/ica541
Broj citata:
Altmetric:
DOI: 10.3233/ICA-170541
URL cjelovitog teksta:
Google Scholar: Enhanced 3D parameterization for integrated shape synthesis by fitting parameter values to point sets
Upisao u CROSBI: Milan Ćurković (Milan.Curkovic@fesb.hr), 1. Tra. 2017. u 19:41 sati



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