Analysis of difference fairing based on DFT-filter

Authors
Citation
Sk. Cho et Bk. Choi, Analysis of difference fairing based on DFT-filter, COMPUT AID, 33(1), 2001, pp. 45-56
Citations number
12
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Computer Science & Engineering
Journal title
COMPUTER-AIDED DESIGN
ISSN journal
0010-4485 → ACNP
Volume
33
Issue
1
Year of publication
2001
Pages
45 - 56
Database
ISI
SICI code
0010-4485(200101)33:1<45:AODFBO>2.0.ZU;2-H
Abstract
In this paper, even-order-difference fairing (EOD-fairing) of point-sequenc e curve (PS-curve) is analyzed using a discrete Fourier transform filter (D FT-filter). It is shown that EOD-fairing of a reflection-padded PS-curve is equivalent to DFT-filtering, and a DFT-filter corresponding to the EOD-fai ring operation is derived. Based on the concept of filtering measure, a met hod of determining an "optimal" damping factor for EOD-fairing is proposed, and then the validity of the proposed method is demonstrated via experimen tal tests. (C) 2000 Elsevier Science Ltd. All rights reserved.