Randomized Incremental Construction of Delaunay and Voronoi Diagrams PDF Download
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Author: Leonidas J. Guibas
Publisher:
ISBN:
Category : Computer algorithms
Languages : en
Pages : 36
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Book Description
The Voronoi diagram of n sites in the plane and its dual, the Delaunay tesselation, are among the most important constructs in two-dimensional Computational Geometry. Their properties, as well as algorithms for their construction, are extensively covered in the standard textbooks of the field, such as (13) or (26), and in numerous papers, e.g. (19). The original papers on the subject are (29) and (30) by Voronoi (circa 1907), and (10) and (11) by Delaunay (circa 1932). Because of the practical importance of the Voronoi and Delaunay diagrams, some of the algorithms for constructing them have been carefully implemented and widely tested in practice. These diagrams are important tools in applications ranging from finite element codes, to pattern classification in statistics, to motion planning in robotics, etc. Analogs of these diagrams exist in higher dimensions as well. Though the higher dimensional diagrams are still very useful, a lot less is known about efficient algorithms for their construction because their topological structure is significantly harder to analyze.... (from the "Introduction" (there is no abstract))
Author: Leonidas J. Guibas
Publisher:
ISBN:
Category : Computer algorithms
Languages : en
Pages : 36
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Book Description
The Voronoi diagram of n sites in the plane and its dual, the Delaunay tesselation, are among the most important constructs in two-dimensional Computational Geometry. Their properties, as well as algorithms for their construction, are extensively covered in the standard textbooks of the field, such as (13) or (26), and in numerous papers, e.g. (19). The original papers on the subject are (29) and (30) by Voronoi (circa 1907), and (10) and (11) by Delaunay (circa 1932). Because of the practical importance of the Voronoi and Delaunay diagrams, some of the algorithms for constructing them have been carefully implemented and widely tested in practice. These diagrams are important tools in applications ranging from finite element codes, to pattern classification in statistics, to motion planning in robotics, etc. Analogs of these diagrams exist in higher dimensions as well. Though the higher dimensional diagrams are still very useful, a lot less is known about efficient algorithms for their construction because their topological structure is significantly harder to analyze.... (from the "Introduction" (there is no abstract))
Author: Rolf Klein
Publisher:
ISBN:
Category : Computational geometry
Languages : en
Pages : 29
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Book Description
Abstract: "Abstract Voronoi diagrams were introduced by R. Klein [Kle89b, Kle88a, Kle88b] as an axiomatic basis of Voronoi diagrams. We show how to construct abstract Voronoi diagrams in time O(n log n) by a randomized algorithm, which is based on Clarkson and Shor's randomized incremental construction technique [CS89]. The new algorithm has the following advantages over previous algorithms: It can handle a much wider class of abstract Voronoi diagrams than the algorithms presented in [Kle89b, MMO91]. It can be adapted to a concrete kind of Voronoi diagram by providing a single basic operation, namely the construction of a Voronoi diagram of five sites. Moreover, all geometric decisions are confined to the basic operation, and using this operation, abstract Voronoi diagrams can be constructed in a purely combinatorial manner."
Author: Gerth S. Brodal
Publisher: Springer Science & Business Media
ISBN: 3540291180
Category : Computers
Languages : en
Pages : 918
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Book Description
This book constitutes the refereed proceedings of the 13th Annual European Symposium on Algorithms, ESA 2005, held in Palma de Mallorca, Spain, in September 2005 in the context of the combined conference ALGO 2005. The 75 revised full papers presented together with abstracts of 3 invited lectures were carefully reviewed and selected from 244 submissions. The papers address all current issues in algorithmics reaching from design and mathematical issues over real-world applications in various fields up to engineering and analysis of algorithms.
Author: Franz Aurenhammer
Publisher: World Scientific Publishing Company
ISBN: 981444765X
Category : Computers
Languages : en
Pages : 346
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Book Description
Voronoi diagrams partition space according to the influence certain sites exert on their environment. Since the 17th century, such structures play an important role in many areas like Astronomy, Physics, Chemistry, Biology, Ecology, Economics, Mathematics and Computer Science. They help to describe zones of political influence, to determine the hospital nearest to an accident site, to compute collision-free paths for mobile robots, to reconstruct curves and surfaces from sample points, to refine triangular meshes, and to design location strategies for competing markets.This unique book offers a state-of-the-art view of Voronoi diagrams and their structure, and it provides efficient algorithms towards their computation.Readers with an entry-level background in algorithms can enjoy a guided tour of gently increasing difficulty through a fascinating area. Lecturers might find this volume a welcome source for their courses on computational geometry. Experts are offered a broader view, including many alternative solutions, and up-to-date references to the existing literature; they might benefit in their own research or application development.
Author: Ngo̧c-Minh Lê
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Author: Herbert Edelsbrunner
Publisher: Springer Science & Business Media
ISBN: 9783540137221
Category : Computers
Languages : en
Pages : 446
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Book Description
Computational geometry as an area of research in its own right emerged in the early seventies of this century. Right from the beginning, it was obvious that strong connections of various kinds exist to questions studied in the considerably older field of combinatorial geometry. For example, the combinatorial structure of a geometric problem usually decides which algorithmic method solves the problem most efficiently. Furthermore, the analysis of an algorithm often requires a great deal of combinatorial knowledge. As it turns out, however, the connection between the two research areas commonly referred to as computa tional geometry and combinatorial geometry is not as lop-sided as it appears. Indeed, the interest in computational issues in geometry gives a new and con structive direction to the combinatorial study of geometry. It is the intention of this book to demonstrate that computational and com binatorial investigations in geometry are doomed to profit from each other. To reach this goal, I designed this book to consist of three parts, acorn binatorial part, a computational part, and one that presents applications of the results of the first two parts. The choice of the topics covered in this book was guided by my attempt to describe the most fundamental algorithms in computational geometry that have an interesting combinatorial structure. In this early stage geometric transforms played an important role as they reveal connections between seemingly unrelated problems and thus help to structure the field.
Author: Siu-Wing Cheng
Publisher: CRC Press
ISBN: 1584887311
Category : Computers
Languages : en
Pages : 404
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Book Description
Written by authors at the forefront of modern algorithms research, Delaunay Mesh Generation demonstrates the power and versatility of Delaunay meshers in tackling complex geometric domains ranging from polyhedra with internal boundaries to piecewise smooth surfaces. Covering both volume and surface meshes, the authors fully explain how and why thes
Author: Edward Ochmanski
Publisher: Springer Science & Business Media
ISBN: 3540852379
Category : Computers
Languages : en
Pages : 638
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Book Description
This book constitutes the refereed proceedings of the 33rd International Symposium on Mathematical Foundations of Computer Science, MFCS 2008, held in Torun, Poland, in August 2008. The 45 revised full papers presented together with 5 invited lectures were carefully reviewed and selected from 119 submissions. All current aspects in theoretical computer science and its mathematical foundations are addressed, ranging from algorithmic game theory, algorithms and data structures, artificial intelligence, automata and formal languages, bioinformatics, complexity, concurrency and petrinets, cryptography and security, logic and formal specifications, models of computations, parallel and distributed computing, semantics and verification.
Author: Thomas C. Kao
Publisher:
ISBN:
Category : Computational geometry
Languages : en
Pages : 85
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Book Description
Guibas, Knuth and Sharir proved that randomized incremental construction of the Delaunay triangulation (DT) of n points can be computed in O(n log n) expected time. We present the first efficient algorithm (O(log n) expected time per operation) that allows both point insertions as well as point deletions for the dynamic maintenance of DTs. The algorithm can be extended to higher dimensions. We present an algorithm for the dynamic maintenance of DTs with constraint chords. Constrained DTs are practical extensions to DTs and are widely used in numerical grid generation and geographic data processing.
Author: Ding-Zhu Du
Publisher: World Scientific
ISBN: 9789810218768
Category : Mathematics
Languages : en
Pages : 520
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Book Description
This book is a collection of surveys and exploratory articles about recent developments in the field of computational Euclidean geometry. Topics covered include the history of Euclidean geometry, Voronoi diagrams, randomized geometric algorithms, computational algebra, triangulations, machine proofs, topological designs, finite-element mesh, computer-aided geometric designs and Steiner trees. This second edition contains three new surveys covering geometric constraint solving, computational geometry and the exact computation paradigm.
