Results 221 to 230 of about 32,315 (256)

The Perspective Silhouette of a Canal Surface

Computer Graphics Forum, 2003
Abstract We present an efficient and robust algorithm for parameterizing the perspective silhouette of a canal surface and detecting each connected component of the silhouette. A canal surface is the envelope of a moving sphere with varying radius, defined by the trajectory C(t) of its center and a radius function
Ku-Jin Kim, In-Kwon Lee
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Computing isophotos of surface of revolution and canal surface

Computer-Aided Design, 2003
Isophote of a surface consists of a loci of surface points whose normal vectors form a constant angle with a given fixed vector. It also serves as a silhouette curve when the constant angle is given as π/2. We present efficient and robust algorithms to compute isophotes of a surface of revolution and a canal surface. For the two kinds of surfaces, each
Ku-Jin Kim, In-Kwon Lee
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μ-Bases for rational canal surfaces

Computer Aided Geometric Design, 2019
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Shanshan Yao, Xiaohong Jia 0001
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HelSweeper: Screw-sweeps of canal surfaces

Computer-Aided Design, 2012
A tube is a solid bounded by the union of a one-parameter family of circles that may be decomposed into canal-surfaces and planar disks or annuli. A screw-sweep is the region swept by a shape during a screw motion. HelSweeper computes the boundary of a screw-sweep of an arbitrary union of tubes and polyhedra. To do so, it generates a superset of faces,
Jarek Rossignac, Jay J. Kim
openaire   +1 more source

Surface Tension of Root Canal Irrigants

Journal of Endodontics, 2000
The aim of this study was to evaluate the surface tension values of established and potential endodontic irrigants to which a surface active agent had not been added. Additionally, Cetredixine, a surfactant-containing 0.2% chlorhexidine gluconate solution, was included in the measurements.
F, Taşman, Z C, Cehreli, C, Oğan, I, Etikan   +3 more
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Computing the Distance between Canal Surfaces

2010
A canal surface is the envelope of a one-parameter set of moving spheres. We present an accurate and efficient method for computing the distance between two canal surfaces. First, we use a set of cone-spheres to enclose a canal surface. A cone-sphere is a surface generated by sweeping a sphere along a straight line segment with the radius of the sphere
Tu, C, Ma, Y, Wang, W
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Canal surfaces versus normal ringed surfaces

Computer Aided Geometric Design, 1994
The author corrects a statement in a paper by \textit{J. K. Johnstone} [ibid. 10, No. 1, 1-24 (1993; Zbl 0767.65004)].
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Blending Canal Surfaces Based on PH Curves

Journal of Computer Science and Technology, 2005
In this paper, a new method for blending two canal surfaces is proposed. The blending surface is itself a generalized canal surface, the spine curve of which is a PH (Pythagorean-Hodograph) curve. The blending surface possesses an attractive property -- its representation is rational.
Chen-Dong Xu, Fa-Lai Chen
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Special canal surfaces of $$\mathbb{S}^3$$

Bulletin of the Brazilian Mathematical Society, New Series, 2011
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Bartoszek, Adam, Langevin, Rémi, Walczak, Paweł G.   +2 more
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Minimum distance between a canal surface and a simple surface

Computer-Aided Design, 2003
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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