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Skeleton Based Parametric 2D Region Representation: Disk B-Spline Curves.

Wu, Z., Wang, X., Liu, S., Chen, Q., Seah, H.S. and Tian, F., 2021. Skeleton Based Parametric 2D Region Representation: Disk B-Spline Curves. IEEE Computer Graphics and Applications, 41 (3), 59-70.

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DBSC-3_27.pdf - Accepted Version
Available under License Creative Commons Attribution Non-commercial.


DOI: 10.1109/MCG.2021.3069847


The skeleton, or medial axis, is an important attribute of 2D shapes. The disk B-spline curve (DBSC) is a skeleton-based parametric freeform 2D region representation, which is defined in B-spline form. The DBSC describes not only a 2D region, which is suitable for describing heterogonous materials in the region, but also the center curve (skeleton) of the region explicitly, which is suitable for animation, simulation and recognition. In addition to being useful for error estimation of the B-spline curve, the DBSC can be used in designing and animating freeform 2D regions. Despite increasing DBSC applications, its theory and fundamentals have not been thoroughly investigated. In this paper, we discuss several fundamental properties and algorithms, such as the de Boor algorithm for DBSCs. We first derive the explicit evaluation and derivatives formulas at arbitrary points of a 2D region (interior and boundary) represented by a DBSC and then provide heterogeneous object representation. We also introduce modeling and interactive heterogeneous object design methods for a DBSC, which consolidates DBSC theory and supports its further applications.

Item Type:Article
Uncontrolled Keywords:Disk B-Spline Curves; Skeleton; 2D Region; B-spline curve; Heterogeneous
Group:Faculty of Science & Technology
ID Code:35414
Deposited By: Symplectic RT2
Deposited On:19 Apr 2021 12:03
Last Modified:14 Mar 2022 14:27


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