Kokichi SUGIHARA


Topology-Oriented Construction of Line Arrangements
Daniel FOGARAS Kokichi SUGIHARA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2002/05/01
Vol. E85-A  No. 5  pp. 930-937
Type of Manuscript:  Special Section PAPER (Special Section on Discrete Mathematics and Its Applications)
Category: 
Keyword: 
robust algorithmtopology-orientedline arrangement
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Minkowski Sums of Axis-Parallel Surfaces of Revolution Defined by Slope-Monotone Closed Curves
Myung-Soo KIM Kokichi SUGIHARA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2001/11/01
Vol. E84-D  No. 11  pp. 1540-1547
Type of Manuscript:  PAPER
Category: Algorithms
Keyword: 
Minkowski sumslope-monotone closed curvesurface of revolution
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Another Proof of Polynomial-Time Recognizability of Delaunay Graphs
Tetsuya HIROSHIMA Yuichiro MIYAMOTO Kokichi SUGIHARA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2000/04/25
Vol. E83-A  No. 4  pp. 627-638
Type of Manuscript:  Special Section PAPER (Special Section on Discrete Mathematics and Its Applications)
Category: 
Keyword: 
Delaunay diagramDelaunay graphgraph recognitionlinear programmingVoronoi diagram
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How to Make Geometric Algorithms Robust
Kokichi SUGIHARA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2000/03/25
Vol. E83-D  No. 3  pp. 447-454
Type of Manuscript:  INVITED SURVEY PAPER
Category: Algorithms for Geometric Problems
Keyword: 
computational geometryrobust computationexact arithmetictopology-oriented methodsymbolic perturbationlazy evaluation
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A Simple Method for Avoiding Numerical Errors and Degeneracy in Voronoi Diagram Construction
Kokichi SUGIHARA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1992/04/25
Vol. E75-A  No. 4  pp. 468-477
Type of Manuscript:  Special Section PAPER (Special Issue on Discrete Mathematics and Its Application)
Category: 
Keyword: 
Voronoi diagramrobust algorithmdegeneracy avoidancesymbolic perturbation
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