List of papers by K. Sugihara

Journal Papers (in English)

• Kokichi Sugihara: Study of lexical graphs for the Japanese language. RAAG Research Notes, Third Series, no. 181 (May 1972).
• Kokichi Sugihara: Dictionary-guided scene analysis based on depth information. Pattern Information Processing Report, Electrotechnical Laboratory, no. 13 (March 1977), pp. 48--122.
• Kokichi Sugihara: Picture language for skeletal polyhedra. Computer Graphics and Image Processing, vol. 8, no. 3 (December 1978), pp. 382--405.
• Kokichi Sugihara: A step toward man-machine communication by means of line drawings of polyhedra. Bulletin of Electrotechnical Laboratory, vol. 42, no. 11/12 (December 1978), pp. 848--871.
• Kokichi Sugihara: Range-data analysis guided by a junction dictionary. Artificial Intelligence, vol. 12, no. 1 (May 1979), pp. 41--69.
• Kokichi Sugihara and Masao Iri: A mathematical approach to the determination of the structure of concepts. The Matrix and Tensor Quarterly, vol. 30, no. 3 (March 1980), pp. 62--75.
• Kokichi Sugihara: On redundant bracing in plane skeletal structures. Bulletin of Electrotechnical Laboratory, vol. 44, no. 5/6 (December 1980), pp. 376--386.
• Kokichi Sugihara: Classification of impossible objects. Perception, vol. 11, no. 1 (January 1982), pp. 65--74.
• Kokichi Sugihara: Mathematical structures of line drawings of polyhedrons. --- Toward man-machine communication by means of line drawings. IEEE Transactions on Pattern Analysis and Machine Intelligence, vol. PAMI-4, no. 5 (September 1982), pp. 458--469.
• Kokichi Sugihara: A unifying approach to descriptive geometry and mechanisms. Discrete Applied Mathematics, vol. 5 (1983), pp. 313--328.
• Kokichi Sugihara: On some problems in the design of plane skeletal structures. SIAM Journal on Algebraic and Discrete Methods, vol. 4, no. 3 (September 1983), pp. 355--362.
• Kokichi Sugihara: A robust description of time-varying scenes for computer animation. Computers and Graphics, vol. 7, no. 3/4 (1983), pp. 277--284.
• Kokichi Sugihara: An algebraic and combinatorial approach to the analysis of line drawings of polyhedra. Discrete Applied Mathematics, vol. 9 (1984), pp. 77--104.
• Kokichi Sugihara: An $n \log n$ algorithm for determining the congruity of polyhedra. Journal of Computer and System Sciences, vol. 29, no. 1 (August 1984), pp. 36--47.
• Kokichi Sugihara: An algebraic approach to shape-from-image problems. Artificial Intelligence, vol. 23 (1984), pp. 59--95.
• Kokichi Sugihara: A necessary and sufficient condition for a picture to represent a polyhedral scene. IEEE Transactions on Pattern Analysis and Machine Intelligence, vol. PAMI-6, no. 5 (September 1984), pp. 578--586.
• Kokichi Sugihara and Noboru Sugie: Recovery of rigid structure from orthographically projected optical flow. Computer Vision, Graphics, and Image Processing, vol. 27 (1984), pp. 309--320.
• Kokichi Sugihara: Interpretation of an axonometric projection of a polyhedron. Computers and Graphics, vol. 8, no. 4 (1984), pp. 391--400.
• Kokichi Sugihara: Detection of structural inconsistency in systems of equations with degrees of freedom and its applications. Discrete Applied Mathematics, vol. 10 (1985), pp. 297--312.
• Kokichi Sugihara: Three principles in stereo vision. Advanced Robotics, vol. 1, no. 4 (1986), pp. 391--400.
• Kokichi Sugihara, Hiroki Iguchi and Noboru Sugie: An experimental system for generating polyhedral structures from line drawings. Journal of Information Processing, vol. 9, no. 3 (1986), pp. 135--144.
• Kokichi Sugihara: Use of vertex-type knowledge for range data analysis. T. Kanade (ed.): Three Dimensional Machine Vision, Kluwer Academic Publisher, 1987, pp. 267--298.
• Kokichi Sugihara: Realizability of polyhedrons from line drawings. G. T. Toussaint (ed.): Computational Morphology, Elsevier Science Publishers, 1988, pp. 177--206.
• Kokichi Sugihara: Some location problems for robot navigation using a single camera. Computer Vision, Graphics, and Image Processing, vol. 42, no. 1 (1988), pp. 112--129.
• Kokichi Sugihara and Masao Iri: Two design principles of geometric algorithms in finite-precision arithmetic. Applied Mathematics Letters, vol. 2, no. 2 (1989), pp. 203--206.
• Kokichi Sugihara: On finite-precision representations of geometric objects. Journal of Computers and System Sciences, vol. 39, no. 2 (October 1989), pp. 236--247.
• Kokichi Sugihara and Masao Iri: A solid modelling system free from topological inconsistency. Journal of Information Processing, vol. 12, no. 4 (1989), pp. 380--393.
• Kai-hua Feng, Kokichi Sugihara and Noboru Sugie: Measurement of three-dimensional objects by pattern projection and camera advance. Advanced Robotics, vol. 4, no. 4 (1990), pp. 319--335.
• Tamal K. Dey, Chandrajit L. Bajaj and Kokichi Sugihara: On good triangulations in three dimensions. International Journal of Computational Geometry and Applications, vol. 2, no. 1 (March 1992), pp. 75--95. {An earlier version is in Proceedings of the ACM Symposium on Solid Modeling Foundations and CAD/CAM Application，June 5--7, 1991, Austin, Texas, pp. 431--441.}
• Kokichi Sugihara: An intersection algorithm based on Delaunay triangulation. IEEE Computer Graphics and Applications, vol. 12, no. 2 (March 1992), pp. 59--67.
• Kokichi Sugihara: Voronoi diagrams in a river. International Journal of Computational Geometry and Applications, vol. 2, no. 1 (March 1992), pp. 29--48.
• Kokichi Sugihara: A simple method for avoiding numerical errors and degeneracy in Voronoi diagram construction. IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, vol. E75-A, no. 4 (April 1992), pp. 468--477.
• Kokichi Sugihara and Masao Iri: Construction of the Voronoi diagram for ``one million'' generators in single-precision arithmetic. Proceedings of the IEEE, vol. 80, no. 9 (September 1992), pp. 1471--1484.
• Tamal K. Dey, Kokichi Sugihara and Chandrajit L. Bajaj: Delaunay triangulations in three dimensions with finite precision arithmetic. Computer Aided Geometric Design, vol. 9 (1992), pp. 457--470.
• Kokichi Sugihara: Approximation of generalized Voronoi diagrams by ordinary Voronoi diagrams. Computer Vision, Graphics, and Image Processing: Graphical Models and Image Processing, vol. 55, no. 6 (1993), pp. 522--531.
• Atsuyuki Okabe, Barry Boots and Kokichi Sugihara: Nearest neighbourhood operations with generalized Voronoi diagrams: a review. International Journal on Geographical Information Systems, vol. 8, no. 1 (1994), pp. 43--71.
• Kokichi Sugihara: Simpler proof of a realizability theorem on Delaunay triangulations. Information Processing Letters, vol. 50 (1994), pp. 173--176.
• Kokichi Sugihara: A robust and consistent algorithm for intersecting convex polyhedra. Computer Graphics Forum, vol. 13, no. 3, Conference Issue, 1994, pp. C-45 -- C-54. (EUROGRAPHICS'94, September 12-16, 1994, Oslo, Norway).
• Kokichi Sugihara and Masao Iri: A robust topology-oriented incremental algorithm for Voronoi diagrams. International Journal of Computational Geometry and Applications, vol. 4, no. 2 (1994), pp. 179--228.
• Kokichi Sugihara: Robust gift wrapping for the three-dimensional convex hull. Journal of Computer and System Sciences, vol. 49, no. 2 (October, 1994), pp. 391--407.
• Kokichi Sugihara and Hiroshi Inagaki: Why is the 3D Delaunay triangulation difficult to construct? Information Processing Letters, vol. 54 (1995), pp. 275--280.
• Yasuaki Oishi and Kokichi Sugihara: Topology-oriented divide-and-conquer algorithm for Voronoi diagrams. Graphical Models and Image Processing, vol. 57, no. 4 (1995), pp. 303--314.
• Kokichi Sugihara: A graph-theoretical method for monitoring concept formation. Pattern Recognition, vol. 28, no. 11 (1995), pp. 1635--1643.
• Kokichi Sugihara: Three-dimentional realization of anomalous pictures---An application of picture interpretation theory to toy design. Pattern Recognition, vol. 30, no. 7 (1997), pp. 1061--1067.
• Kokichi Sugihara: Paper-made ``Impossible Objects''. Hyper Space, vol. 6, no. 1 (1997), pp. 62--63.
• Kokichi Sugihara, Toshiyuki Imai and Takeshi Hataguchi: An algebra for slope-monotone closed curves. International Journal of Shape Modeling, vol. 3, nos. 3 \& 4 (September \& December, 1997), pp. 167--183.
• Tsuyoshi Minakawa and Kokichi Sugihara: Topology-oriented construction of three-dimensional convex hulls. Optimization Methods \& Software, vol. 10 (1998), pp. 357--371.
• Kokichi Sugihara: Resolvable representation of polyhedra. Discrete and Computational Geometry, vol. 21 (1999), pp. 243--255.
• Kokichi Sugihara: Surface interpotation based on new local coordinates. Computer-Aided Design, vol. 31 (1999), pp. 51--58.
• Hisamoto Hiyoshi and Kokichi Sugihara: Two generalizations of an interpolant based on Voronoi diagrams. International Journal of Shape Modeling, vol. 5, no. 2 (1999), pp. 213--231.
• Han Guoquiang, Ken Hayami and Kokichi Sugihara: Extrapolation method of iterated collocation solution for two-dimensional nonlinear Volterra integral equation. Applied Mathematics and Computation, vol. 112 (1999), pp. 49--61.
• Kokichi Sugihara, Masao Iri, Hiroshi Inagaki and Toshiyuki Imai: Topology-oriented implementation---An approach to robust geometric algorithms. Algorithmica, vol. 27 (2000), pp. 5--20.
• Kokichi Sugihara: How to make geometric algorithms robust. IEICE Transactions on Information and Systems, vol. E83-D, no. 3 (2000) (Special Issue on Algorithm Engineering), pp. 447--454.
• Kokichi Sugihara: Three-dimensional convex hull as a fruitful source of diagrams. Theoretical Computer Science, vol. 235 (2000), pp. 325--337.
• Tetsuya Hiroshima, Yuichiro Miyamoto and Kokichi Sugihara: Another proof of polynomial-time recognizability of Delaunay graphs. IEICE Transactions on Fundamentals, vol. E83-A, no. 4 (2000), pp. 627--638.
• Kokichi Sugihara: Exact computation of 4-D convex hulls with perturbation and acceleration. Hyper Space, vol. 10, no. 1 (2001), pp. 68--86.
• Myung-Soo Kim and Kokichi Sugihara: Minkowski sums of axis-parallel surfaces of revolution defined by slope-monotone closed curves. IEICE Transactions on Information and Systems, vol. E84-D, no. 11 (2001), pp. 1540--1547.
• Deok-Soo Kim, Donguk Kim and Kokichi Sugihara: Voronoi diagram of a circle set from Voronoi diagram of a point set, I, Topology. Computer Aided Geometric Design, vol. 18 (2001), pp. 541--562.
• Deok-Soo Kim, Donguk Kim and Kokichi Sugihara: Voronoi diagram of a circle set from Voronoi diagram of a point set, II, Geometry. Computer Aided Geometric Design, vol. 18 (2001), pp. 563--585.
• Daniel Fogaras and Kokichi Sugihara: Topology-oriented construction of line arrangements. IEICE Transactions of Fundamentals of Electronics, Communications and Computer Sciences, vol. E85-A, no.5 (2002), pp. 930--937.
• Hisamoto Hiyoshi and Kokichi Sugihara: Improving continuity of Voronoi-based interpolation over Delaunay spheres. Computational Geometry: Theory and Applications, vol. 22 (2002), pp. 167--183.
• Kokichi Sugihara: Laguerre Voronoi diagram on the sphere. Journal of Geometry and Graphics, vol. 6, no. 1 (2002), pp. 69--81.
• Kei Kobayashi and Kokichi Sugihara: Crystal Voronoi diagram and its applications. Future Generation Computer Systems, vol. 18 (2002), pp. 681--692.
• Takeshi Kanda and Kokichi Sugihara: Comparison of various trees for nearest-point search with/without the Voronoi diagram. Information Processing Letters, vol. 84 (2002), pp. 17--22.
• Lluis Ros, Kokichi Sugihara and Federico Thomas: Shape representation using trihedral mesh projections. Visual Computer, vol. 19, Issue 2--3 (2003), pp. 139--150.
• Kohei Murotani and Kokichi Sugihara: Globally smooth interpolation using Gregory patches over irregular meshes. International Journal on Shape Modeling, vol. 9, no. 1 (2003), pp. 21--39.
• Kokichi Sugihara: Hyperpolygons generated by the invertible Minkowski sum of polygons. Pattern Recognition Letters, vol. 25 (2004), pp. 551--560.
• Kokichi Sugihara: Mathematics of pictures of impossible objects: Human vision vs. Robot vision. SUGAKU EXPOSITIONS, vol. 17, no. 1 (2004), pp. 37--49.
• Kokichi Sugihara, Masayoshi Sawai, Hiroaki Sano, Deok-Soo Kim and Donguk Kim: Disk packing for the estimation of the size of wire bundle. Japan Journal of Industrial and Applied Mathematics, vol. 21, no. 3 (2004), pp. 259--278.
• Takeshi Kanda and Kokichi Sugihara: Two-dimensional range search based on the Voronoi diagram. International Journal of Computational Geometry and Applications, vol. 15, no. 2 (2005), pp. 151--166.
• Donguk Kim, Deok-Soo Kim and Kokichi Sugihara: Euclidean Voronoi diagram for circles in a circle. International Journal of Computational Geometry and Applications, vol. 15, no. 2 (2005), pp. 209--228.
• Tetsushi Nishida and Kokichi Sugihara: Boat-sail Voronoi diagram on a curved surface. Japan Journal of Industrial and Applied Mathematics, vol. 22, no. 2 (2005), pp. 267--278.
• Kokichi Sugihara: A characterization of a class of anomalous solids. Interdisciplinary Information Sciences, vol. 11, no. 2 (2005), pp. 149--156.
• Tetsushi Nishida and Kokichi Sugihara: Boat-sail Voronoi diagram and its computation based on a cone-approximation scheme. Japan Journal of Industrial and Applied Mathematics, vol. 22, no. 3 (2005), pp. 367--383.
• Kohei Murotani and Kokichi Sugihara: New spectral decomposition method for three-dimensional shape models and its applications. Journal of Computing and Information Science in Engineering, vol. 5 (2005), pp. 277--282.
• Donguk Kim, Deok-Soo Kim and Kokichi Sugihara: Apollonius tenth problem via radius adjustment and Mobius transformation. Computer-Aided Design, vol. 38 (2006), pp. 14--21.
• Deok-Soo Kim, Byunghoom Lee and Kokichi Sugihara: A sweep-line algorithm for the inclusion hierarchy among circles. Japan Journal of Industrial and Applied Mathematics, vol. 23, no. 1 (2006), pp. 127--138.
• Deok-Soo Kim, Donguk Kim, Youngsong Cho and Kokichi Sugihara: Quasi-triangulation and interworld data structure in three dimensions. Computer-Aided Design, vol. 38 (2006), pp. 808--819.
• Takaharu Yaguchi and Kokichi Sugihara: On the Hedstrom nonreflecting boundary condition for C$^2$ solutions. Journal of Computational and Applied Mathematics, vol. 197 (2006), pp. 150--155.
• Masaki Moriguchi and Kokichi Sugihara: Out-of-core isotropic mesh simplification. Journal of three dimensional images, vol. 20, no. 3 (2006), pp. 47--50.
• Kokichi Sugihara: Sliver-free perturbation for the Delaunay tetrahedrization. Computer-Aided Design, vol. 39 (2007), pp. 87--94.
• Tetsushi Nishida, Kokichi Sugihara and Masato Kimura: Stable marker-particle method for the Voronoi diagram in a flow field. Journal of Computational and Applied Mathematics, vol. 202 (2007), pp. 377--391.
• Shinji Imahori, Motoki Kushiya, Takeru Nakashima and Kokichi Sugihara: Generation of cutter paths for hard material in wire EDM. Journal of Matherials Processing Technology, vol. 206 (2008), pp. 453--461.
• Masaki Moriguchi and Kokichi Sugihara: Constructing centroidal Voronoi tessellations on surface meshes. In M.L. Gavrilova (ed.): Generalized Voronoi Diagrams --- A geometry-based approach to computational intelligence, Springer, Berlin (2009), pp. 235--245.
• Kokichi Sugihara: Computer-aided generation of Escher-like Sky and Water tiling patterns. Journal of Mathematics and the Arts, vol. 3, no. 4 (2009), pp. 195--207.
• Tetsushi Nishida and Kokichi Sugihara: Boat-sail Voronoi diagram and its application. International Journal of Computational Geometry and Applications, vol. 19 (2009), pp. 425--440.
• Hidenori Fujii and K. Sugihara: Properties and an approximation algorithm of round-tour Voronoi diagrams. Transactions on Computational Science IX, (Eds.: M. L. Gavrilova and C. J. Kenneth Tan), Special Issue on Voronoi Diagrams in Science and Engineering (Guest Editor: F. Anton), Lecture Notes in Computer Science 6290 (2010), pp.109-122 (DOI: 10.1007/ 978-3-642-16007-3_5)
• Deok-Soo Kim, Youngsong Cho and Kokichi Sugihara: Quasi-worlds and Quasi-operators on Quasi-triangulations. Computer-Aided Design, vol. 42 (2010), pp. 874--888 (DOI: 10.1016/ j.cad.2010.06.002).
• Deok-Soo Kim, Youngsong Cho, Kokichi Sugihara, Joonghyun Ryu, and Donguk Kim: Three-dimensional beta-shapes and beta-complexes via quasi-triangulation. Computer-Aided Design, vol. 42 (2010), pp. 911--929 (DOI: 10.1016/ j.cad.2010.06.004).
• Kokichi Sugihara: Robust geometric computation based on the principle of independence. Nonlinear Theory and Its Applications, IEICE, vol. 2, no. 1(2011), pp. 32-42.
• Md. Bahlul Haider, Shinji Imahori and Kokichi Sugihara: Success guaranteed routing in almost Delaunay planar nets for wireless sensor communication. International Journal of Sensor Networks, vol. 9, no. 2 (2011), pp. 69-75.
• Kokichi Sugihara, Atsushi Okabe and Toshiaki Satoh: Computational method for the point cluster analysis on networks. GeoInformatica: vol. 15, no. 1 (2011), pp. 167-189. (DOI: 10.1007/ s10707-009-0092-5)
• Kokichi Sugihara: Spacial realization of Escher's impossible world. Asian Pacific Mathematics Newsletter, vol. 1, no. 1 (2011), pp. 1-5.
• Hiroshi Koizumi and Kokichi Sugihara: Maximum eigenvalue problem for Escherization. Graphs and Combinatorics, vol. 27 (2011), pp. 431-439. (DOI: 10.1007/s00373-011-1022-5)
• Amy Poh Ai Ling, Kokichi Sugihara Kokichi and Masao Mukaidono: 　The Japanese Smart Grid Initiatives, Investments, and Collaborations. 　International Journal of Advanced Computer Science and Applications,　 vol. 3, no. 7 (2012), pp. 44-54.
• Kokichi Sugihara: Design of solids for antigravity motion illusion. Computational Geometry: Theory and Applications, vol. 47 (2014), pp. 675-682. (http://dx.doi.org/10.1016/j.comgeo.2013.12.007). (http://www.sciencedirect.com/science/article/pii/S0925772113001752#)
• Kokichi Sugihara: A single solid that can generate two impossible motion illusions. Perception, vol. 43, no. 9 (2014), pp. 1001-1005. doi:10.1068/p7700
• Kokichi Sugihara: Computational Geometry in the Human Brain. Discrete and Computational Geometry and Graphs (Eds.: J. Akiyama, H. Ito and T. Sakai), 16th Japanese Conference, JCDCGG 2013 (Tokyo, September 17-19, 2013) Lecture Notes in Computer Science 8845 (2014), pp.145-160 (DOI: 10.1007/978-3-319-13287-7_13)
• J.-K. Kim, Y.Cho, R. a. Laskowski, S. e. Ryu, K. Sugihara and D.-S. Kim: BetaVoid: Molecular Voids via Beta-complexes and Voronoi diagrams. Proteins: Structure, Functions, and Bioinformatics, vo. 82, no. 9 (2014), pp. 1829-1849.
• Kokichi Sugihara: Height reversal generated by rotation around a vertical axis. Journal of Mathematical Psychology, vol. 68-69 (2015), pp. 7-12. http://dx.doi.org/10.1016/j.jmp.2015.07.001
• K. Sugihara: Ambiguous cylinders: A new class of impossible objects. Computer Aided Drafting, Design and manufacturing, vol. 25, no. 3 (2015), pp. 19--25.
• K. Sugihara: Anomalous Mirror Symmetry Generated by Optical Illusion. Symmetry, vol. 8, no. 4 (2016), p. 21, doi:10.3390/sym8040021 (http://www.mdpi.com/2073-8994/8/4/21)
• K. Sugihara: A New Type of Impossible Objects That Become Partly Invisible in a Mirror. Japan Journal of Indsutrial and Applied Mathematics, vol. 33 (2016), pp. 525-535. DOI: 10.1007/s13160-016-0233-9 http://link.springer.com/article/10.1007/s13160-016-0233-9
• J. Ono, A. Tomoeda and K. Sugihara: Footsteps Illusion Art. Journal of Mathematics and the Arts, vol. 10 (2016), pp. 65-73. DOI: 10.1080/17513472.2016.1236645. online: http://dx.doi.org/10.1080/17513472.2016.1236645
• S. Chaidee and K. Sugihara: Fitting Spherical Laguerre Voronoi Diagrams to Real-World Tessellations Using Planar Photographic Images, J. Akiyama et al. (eds.): Discrete and Computational Geometry and Graphics (LNCS 9943), Springer, 2016, pp. 73-84. doi: 10.1007/978-3-319-48532-4_7
• K. Sugihara: Thickness Design for Ambiguous Cylinder Illusion. Japan Journal of Industrial and Applied Mathematics, DOI: 10.1007/s13160-017-0263-y, https://link.springer.com/article/10.1007/s13160-017-0263-y? wt_mc=Internal.Event.1.SEM.ArticleAuthorOnlineFirst, vol. 35, ussye 1 (2018), pp. 391--409.
• K. Sugihara: Topology-disturbing objects: A new class of 3D optical illusion. Journal of Mathematics and the Arts, vol. 12 (2018), issue 1, pp. 2-18. https://doi.org/10.1080/17513472.2017.1368133
• T. Sushida, S. Kondo, K. Sugihara and M. Mimura: A differential equation model of retinal processing for understanding lightness optical illusions. Japan Journal of Industrial and Applied Mathematics, DOI: 10.1007/s13160-017-0272-x, vol. 35, no. 1 (2018), pp. 117--156.
• S. Chaidee and K. Sugihara: Spherical Laguerre Voronoi diagram approximation to tessellations without generators. Graphical Models, vol. 95 (2018), pp. 1--13.
• K. Sugihara and M. Moriguchi: Reflexively-Fused Cylinders. Symmetry, vol. 10, no. 7 (2018), p. 275, doi:10.3390/sym10070275. PDF Version: http://www.mdpi.com/2073-8994/10/7/275/pdf
• S. Chaidee and K. Sugihara: Laguerre Voronoi Diagram as a Model for Generating the Tessellation Patterns on the Sphere. Graphs and Combinatorics, Ref.: Ms. No. GCOM-D-18-00005 DOI: https://doi.org/10.1007/s00373-019-02006-5, https://link.springer.com/article/10.1007/s00373-019-02006-5

Reviewed Conference Papers

• Kokichi Sugihara and Yoshiaki Shirai: Range data understanding guided by a junction dictionary. Proceedings of the Fifth International Joint Conference on Artificial Intelligence (August 25, 1977, Cambridge), p. 706.
• Kokichi Sugihara and Masao Iri: A mathematical approach to the determination of the structure of concepts. Proceedings of IEEE International Conference on Cybernetics and Society (November 4, 1978, Tokyo), pp. 421--426.
• Kokichi Sugihara: Quantitative analysis of line drawings of polyhedral scenes. Proceedings of the Fourth International Conference on Pattern Recognition (November 10, 1978, Kyoto), pp. 771--773.
• Kokichi Sugihara: Automatic construction of junction dictionaries and their exploitation for the analysis of range data. Proceedings of the Sixth International Joint Conference on Artificial Intelligence (August 21, 1979, Tokyo), pp. 859--864.
• Kokichi Sugihara, Kiyoshi Okazaki, Feng Kaifua and Noboru Sugie: Regular pattern projection for surface measurement. H. Hanafusa and H. Inoue (eds.): Robotics Research, The Second International Symposium (August 22, 1984, Kyoto), MIT Press, Cambridge, 1985, pp. 17--24. [An earlier version is in Proceedings of the Second International Symposium on Robotics Research (August 22, 1984, Kyoto), pp. 231--238.]
• Kokichi Sugihara: A correspondence between line drawings of polyhedrons and plane skeletal structures. S. Ishizaka (ed.): Proceedings of the First International Symposium for Science on Form (November 28, 1985, Tsukuba), KTK Scientific Publishers, 1986, pp. 273--280.
• Toshiyuki Yoshitake, Kokichi Sugihara and Noboru Sugie: Recognition of three-dimensional objects by means of regular pattern projection. Proceedings of the IEEE International Workshop on Industrial Applications of Machine Vision and Machine Intelligence (February 2, 1987, Tokyo), pp. 229--234.
• Kokichi Sugihara: Some location problem for single-eye robot navigation. Proceedings of the IEEE International Workshop on Industrial Applications of Machine Vision and Machine Intelligence (February 2, 1987, Tokyo), pp. 250--255.
• Kokichi Sugihara: Location of a robot using sparse visual information. R. Bolles and B. Roth (eds.): Robotics Research --- The Fourth International Symposium (August 9-14, 1987, Santa Cruz), MIT Press, Cambridge, 1988, pp. 319--326. [An earlier version is in Proceedings of the Fourth International Symposium Robotics Research (August 9-14, 1987, Santa Cruz), pp. 81--88.]
• Kokichi Sugihara and Masao Iri: Construction of the Voronoi diagram for over $10^5$ generators in single-precision arithmetic. Abstracts of the First Canadian Conference on Computational Geometry (August 21-25, 1989, Montreal), p. 42.
• Kokichi Sugihara: Topology-oriented approach to designing numerically stable geometric algorithms. Abstracts of Second Franco-Japan Days on Combinatorics and Optimization (October 20-21, 1989, Tokyo), p. 5.
• Kokichi Sugihara, Yasuaki Ooishi and Toshiyuki Imai: Topology-oriented approach to robustness and its applications to several Voronoi-diagram algorithms. Proceedings of the Second Canadian Conference in Computational Geometry (August 6-10, 1990, Ottawa, Ontario), pp. 36--39.
• Kokichi Sugihara: Applications of the Delaunay triangulations to geometric intersection problems. Abstracts of the 15th IFIP Conference on System Modelling and Optimization (September 2-6, 1991, Zurich, Switzerland), pp. 82--83.
• Hiroshi Inagaki, Kokichi Sugihara and Noboru Sugie: Numerically robust incremental algorithm for constructing three-dimensional Voronoi diagrams. Proceedings of the Fourth Canadian Conference on Computational Geometry (August 10-14, 1992, St.John's, Newfoundland, Canada), 1992, pp. 334--339.
• Kokichi Sugihara: Topologically consistent algorithms related to convex polyhedra. T. Ibaraki, Y. Inagaki, K. Iwama, T. Nishizeki and M. Yamashita (eds.): Algorithms and Computation (Proceedings of the Third International Symposium, ISAAC'92, December 1992, Nagoya), Lecture Notes in Computer Science, vol. 650, Springer, 1992, pp. 209--218.
• Kokichi Sugihara: Resolvable representation of polyhedra. Proceedings of the Second ACM/IEEE Symposium on Solid Modeling and Applications (May 19-21, 1993, Montreal, Canada), pp. 127--135.
• Hiroshi Inagaki and Kokichi Sugihara: Topologically consistent algorithm for constructing constrained Delaunay triangulation. Abstracts of the 7th Franco-Japanese Days on Combinatorics, Optimization and Computational Geometry (June 13-14, 1994, Tokyo), p. 14.
• Kokichi Sugihara and Hiroshi Inagaki: How to cope with degeneracy in constructing three-dimensional Delaunay triangulation. Proceedings of the 14th IMACS World Congress on Computational and Applied Mathematics (July 11-15, 1994, Atlanta), volume 3, pp. 1506--1508.
• Hiroshi Inagaki and Kokichi Sugihara: Numerically robust algorithm for constructing constrained Delaunay triangulation. Proceedings of the 6th Canadian Conference on Computational Geometry (August 2-6, 1994, Saskatoon, Saskatchewan), pp. 171--176.
• Kokichi Sugihara: Numerical issues and practical implementations in computational geometry. H. Kaiser, E. Kruezer and H. Schwetlick (eds.): Zeitschrift fur Angewandte Mathematik und Mechanik, vol.76, Supplement 3, 1996, pp. 191--194. [An earlier version is in Abstracts of ICIAM95 (Third International Congress on Industrial and Applied Mathematics) (July 3-7, 1995, Hamburg), p. 125 (M102)]
• Kokichi Sugihara: Combinatorial abstraction---A new paradigm for robust geometric computation. International Workshop on Current Directions in Numerical Software and High Performance Computing (IFIP/WG2.5 Workshop), (October 19-20, 1995, Kyoto).
• Kokichi Sugihara: Construction of impossible objects---Application of picture-interpretation theory to illusory toys. Proceedings of the 2nd Asian Conference on Computer Vision (December 5-8, 1995, Singapore), vol. 3, pp. 151--155.
• Takeshi Hataguchi and Kokichi Sugihara: Exact algorithm for Minkowski operators. Proceedings of the 2nd Asian Conference on Computer Vision (December 5-8, 1995, Singapore), vol. 3, pp. 392--396.
• Tetsuya Hiroshima and Kokichi Sugihara: Recognition of Delaunay graphs. Korea-Japan Joint Workshop on Algorithms and Computation (August 23-24, 1996, KAIST, Taejon), pp. 102--109.
• Kokichi Sugihara: 3D convex hull as a fruitful source of diagrams. Abstracts of the 9th Franco-Japan Days on Combinatorics and Optimization (October 14-16, 1996, Okinawa), p. 19.
• Kokichi Sugihara: Experimental study on acceleration of an exact-arithmetic geometric algorithm. Proceedings of the Shape Modeling International'97 (March 3-6, 1997, Aizu-Wakamatsu), pp. 160--168.
• Tsuyoshi Minakawa and Kokichi Sugihara: Topology oriented vs. exact arithmetic -- experience in implementing the three-dimensional convex hull algorithm. H. W. Leong, H. Imai and S. Jain (eds.): Algorithms and Computation, 8th International Symposium, ISAAC'97 (Lecture Notes in Computer Science, vol. 1350), (December, 1997, Singapore), pp. 273--282.
• Kokichi Sugihara and Tetsuya Hiroshima: How to draw a Delaunay diagram with a given topology. Abstracts of the 13th European Workshop on Computational Geometry (March, 1997, Wurzburg), pp. 13--15.
• Kokichi Sugihara: A new local coordinate system based on the Voronoi diagrams. Proceedings of the Workshop on Differential/Topological Techniques in Geometric Modeling and Processing '98 (April 7-8, 1998, Pohang, Korea), pp. 27--41.
• Hisamoto Hiyoshi and Kokichi Sugihara: An interpolant based on line segment Voronoi diagrams. Proceedings of the Japan Conference on Discrete and Computational Geometry '98 (December 9-12, 1998, Tokyo), pp. 34--38.
• Hisamoto Hiyoshi and Kokichi Sugihara: 　　 Generalization of an interpolant using Voronoi diagrams in two directions. Proceedings of the International Conference on Shape Modeling and Applications (March 1-4, 1999, Aizu-Wakamatsu), pp. 154--161.
• Kokichi Sugihara: Exact computation of 4-D convex hulls with perturbation and acceleration. Proceedings of the 7th Pacific Conference on Computer Graphics and Applications (Pacific Graphics '99) (October 507, 1999, Seoul, Korea)
• Hisamoto Hiyoshi and Kokichi Sugihara: 　　 A sequence of generalized coordinate systems based on Voronoi diagrams and its application to interpolation. Proceedings of Geometric Modeling and Processing 2000 (April, 2000, Hong Kong), pp. 129--137.
• Hisamoto Hiyoshi and Kokichi Sugihara: Voronoi-based interpolation with higher continuity. Proceedings of the 16th Annual Symposium on Computational Geometry (June, 2000, Hong Kong), pp. 242--250.
• Deok-Soo Kim, Donguk Kim and Kokichi Sugihara: Topology operation of circle set Voronoi diagram construction from the Voronoi diagram of a point set. Proceedings of the Riken Symposium on Geometric Processing for Innovative Applications (July, 2000), pp. 105--125.
• Deok-Soo Kim, Donguk Kim and Kokichi Sugihara: Robust and fast construction of a circle set Voronoi diagram from a point set Voronoi diagram. Proceedings of the IASTED International Conference on Computer Graphics and Imaging (November, 2000, Las Vegas), pp. 187--191.
• Deok-Soo Kim, Donguk Kim and Kokichi Sugihara: Voronoi diagram of a circle set constructed from Voronoi diagram of a point set. D. T. Lee and S.-H. Teng (eds.): 11th International Conference ISAAC 2000 (December, 2000, Taipei), pp. 432--443.
• Hisamoto Hiyoshi and Kokichi Sugihara: An interpolant based on line segment Voronoi diagrams. J. Akiyama, M. Kano and M. Urabe (eds.): Discrete and Computational Geometry, Lecture Notes in Computer Science, vol. 1763 (2000), pp. 119--128.
• Kokichi Sugihara: ``Impossible objects'' are not necessarily impossible---Mathematical study on optical illusion. J.~Akiyama, M.~Kano and M.~Urabe (eds.): Discrete and Computational Geometry, Lecture Notes in Computer Science, vol.~1763 (2000), pp.~305--316.
• Kei Kobayashi and Kokichi Sugihara: Crystal Voronoi diagram and its applications to collision-free paths. Computational Science-ICCS 2001, Lecture Notes in Computer Science, vol. 2073 (May, 2001), pp. 738--747.
• Deok-Soo Kim, Donguk Kim, Kokichi Sugihara and Joonghyun Ryu: Robust and fast algorithm for a circle set Voronoi diagram in a plane. Computataional Science---ICCS 2001, Lecture Notes in Computer Science, vol. 2073 (2001), pp. 718--727.
• Deok-Soo Kim, Donguk Kim, Kokichi Sugihara and Joonghyun Ryu: Apollonius Tenth Problem as a point location problem. Computataional Science---ICCS 2001, Lecture Notes in Computer Science, vol. 2073 (2001), pp. 728--737.
• Deok-Soo Kim, Donguk Kim and Kokichi Sugihara: The computation of circumcircles of three circles. Proceedings of the 6th ACM Symposium on Solid Modeling and Applications (June 6-8, 2001, Ann Arbor), pp. 323--324.
• Daniel Fogaras and Kokichi Sugihara: Topology-oriented robust algorithm for constructing line arrangements. 6th Korea-Japan Joint Workshop on Algorithms and Computation (June 28-29, 2001, Pusan), pp. 51--58.
• Takeshi Kanda and Kokichi Sugihara: Hybrid arithmetic for acceleration of geometric algorithms ---Suitable error estimation for each of sign decisions. 6th Korea-Japan Joint Workshop on Algorithms and Computation (June 28-29, 2001, Pusan), pp. 37--44.
• Kokichi Sugihara: Hyperfigures and their interpretations. T. Asano, R. Klette and C. Ronse (eds.): Geometry, Morphology and Computational Imaging, Lecture Notes in Computer Science, vol. 2616, (11th International Workshop on Theoretical Foundations of Computer Vision, Dagstahl, Germany, April, 2002), pp. 231--246.
• L. Ross, K. Sugihara and F. Thomas: Shape representation using trihedral mesh projections. 10th International Conference on Discrete Geometry for Computer Imagery (April, 2002), pp. 209--219. (Lecture Notes in Computer Science, vol. 2301)
• Kokichi Sugihara: Invertible Minkowski sum of polygons. 10th International Conference on Discrete Geometry for Computer Imagery (April, 2002), pp. 350--359. (Lecture Notes in Computer Science, vol. 2301)
• Kohei Murotani and Kokichi Sugihara: G^1 surface interpolation using Gregory patches over irregular meshes. NICOGRAPH International 2002 (May 30, 2002, Tokyo), pp. 97--102.
• Kohei Murotani and Kokichi Sugihara: G^1 surface interpolation for irregularly located data. Geometric Modeling and Processing---Theory and Applications (GMP2002), (July 10-12, 2002, Wako), pp. 187--196.
• Joon-Kyung Seong, Myung-Soo Kim and Kokichi Sugihara: The Minkowski sum of two simple surfaces generated by slope-monotone closed curves. Geometric Modeling and Processing---Theory and Applications (GMP2002), (July 10-12, 2002, Wako), pp. 33--42.
• Deok-Soo Kim, Donguk Kim and Kokichi Sugihara: Voronoi diagram of circles in a large circle. V. Kumar, M. L. Gavrilova, C. J. K. Tan and P. L'Ecuyer (eds.): Computational Science and Its Applications -- ICCSA 2003, Part III, Lecture Notes in Computer Science, vol. 2669, (International Conference, Montreal, Canada, Proceedings), (May, 2003), pp. 847--855.
• Takeshi Kanda and Kokichi Sugihara: Two-dimensional range search based on the Voronoi diagram. V. Kumar, M. L. Gavrilova, C. J. K. Tan and P. L'Ecuyer (eds.): Computational Science and Its Applications -- ICCSA 2003, Part III, Lecture Notes in Computer Science, vol. 2669, (International Conference, Montreal, Canada, Proceedings), (May, 2003), pp. 776--786.
• Donguk Kim, Kwangseok Yu, Deok-Soo Kim and Kokichi Sugihara: Voronoi diagram of circles and its applications. 　　 SIAM Conference on Geometric Design and Computing, (November 10-13, 2003).
• Kohei Murotani and Kokichi Sugihara: Watermarking 3D polygonal meshes using the singular spectrum analysis. The 10th IMA Conference on the Mathematics of Surfaces (Leeds, UK, September 15-17, 2003).
• Hiroshi Kawaharada and Kokichi Sugihara: Compression of arbitrary mesh data using subdivision spheres. The 10th IMA Conference on the Mathematics of Surfaces (Leeds, UK, September 15-17, 2003).
• Tetsushi Nishida and Kokichi Sugihara: Voronoi diagram in the flow field. T. Ibaraki, N. Katoh and H. Ono (eds.): Algorithms and Computation, 14th International Symposium, ISAAC 2003 (Lecture Notes in Computer Science, vol. 2906), pp. 26--35, 2003.
• Tetsushi Nishida and Kokichi Sugihara: Approximation of the boat-sail Voronoi diagram and its application. A. Lagana, M. L. Gavrilova, V. Kumar, Y. Mun, C. J. K. Tan and O. Gervasi (eds.): Computational Science and Its Applications---ICCSA 2004, Part III, Lecture Notes in Computer Science, vol. 3045 (International Conference, Assisi, Italy, Proceedings), (May 14-17, 2004), pp. 227--236.
• Hisamoto Hiyoshi and Kokichi Sugihara: Improving the global continuity of the natural neighbor interpolation. A. Lagana, M. L. Gavrilova, V. Kumar, Y. Mun, C. J. K. Tan and O. Gervasi (eds.): Computational Science and Its Applications---ICCSA 2004, Part III, Lecture Notes in Computer Science, vol. 3045 (International Conference, Assisi, Italy, Proceedings), (May 14-17, 2004), pp. 71--80.
• Deok-Soo Kim, Byunghoon Lee, Cheol Hyung Cho and Kokichi Sugihara: Plane-sweep algorithm of O$(n\log n)$ for the inclusion hierarchy among circles. A. Lagana, M. L. Gavrilova, V. Kumar, Y. Mun, C. J. K. Tan and O. Gervasi (eds.): Computational Science and Its Applications---ICCSA 2004, Part III, Lecture Notes in Computer Science, vol. 3045 (International Conference, Assisi, Italy, Proceedings), (May 14-17, 2004), pp. 53--61.
• Kokichi Sugihara: Realization of impossible objects and a new type of visual illusion. Mathematical Aspects of Image Processing and Computer Vision 2004 (November 18-20, 2004, Sapporo), pp. 6--7.
• Kohei Murotani and Kokichi Sugihara: New spectral decomposition for 3D polygonal meshes and its application to watermarking. 13th International Conference in Central Europe on Computer Graphics, Visualization and Computer Vision 2005 (WSCG'2005) (Plzen, Czech Republic, January 31-February 4, 2005), pp. 95--102.
• Takaharu Yaguchi and Kokichi Sugihara: A new characteristic nonreflecting boundary condition for the multidimensional Navier-Stokes equations. 11th AIAA/CEAS Aeroacoustics Conference (26th AIAA Aeroacoustics Conference), (Monterey, U.S.A., May 23-25, 2005).
• Hiroshi Kawaharada and Kokichi Sugihara: Line subdivision. Ralph Martin, H. Bez and Malcolm Sabin (eds.): Mathematics of Surface XI, Lecture Notes in Computer Science, vol. 3604 (11th IMA International Conference on Mathematics of Surfaces), (Loughborough, UK, September 5-7, 2005), pp. 240--254.
• Shiro Matuura and Kokichi Sugihara: Robust construction of sphere Voronoi diagrams using digital topology. Proceedings of the 2nd International Symposium on Voronoi Diagrams in Science and Engineering (Seoul, Korea, October 10-13, 2005), pp. 125--133.
• Yoshiaki Tanaka and Kokichi Sugihara: Exact computation of a circle Voronoi diagram. Proceedings of the 2nd International Symposium on Voronoi Diagrams in Science and Engineering (Seoul, Korea, October 10-13, 2005), pp. 173--183.
• Hiroshi Kawaharada and Kokichi Sugihara: Dual subdivision---A new class of subdivision schemes using projective duality. 14th International Conference in Central Europe on Computer Graphics, Visualization and Computer Vision 2006 (WSCG'2006) (Plzen, Czech Republic, January 30-February 3, 2006), pp. 9--16.
• Hideyuki Sakai and Kokichi Sugihara: Stable and topology-preserving extraction of medial axes. Proceedings of the 3rd International Symposium on Voronoi Diagrams in Science and Engineering (Banff, Canada, July 2-5, 2006), pp. 40--47.
• Masaki Moriguchi and Kokichi Sugihara: A new initialization method for constructing centroidal Voronoi tessellations on surface meshes. Proceedings of the 3rd International Symposium on Voronoi Diagrams in Science and Engineering (Banff, Canada, July 2-5, 2006), pp. 159--165.
• Hiroshi Kawaharada and Kokichi Sugihara: Computation of normals for stationary subdivision surfaces. The Fourth International Conference on Geometric Modeling and Processing (Pittsburgh, U.S.A., July 26-29, 2006), pp. 26--29.
• Masaki Moriguchi and Kokichi Sugihara: Restricted edge contractions in surface triangulations. The Kyoto International Conference on Computational Geometry and Graph Theory (Kyoto, Japan, June 11-15, 2007).
• Kokichi Sugihara: Artistic pattern generation by a model of territory competing. Proceedings of the 4th International Symposium on Voronoi Diagrams in Science and Engineering (Pontypridd, Wales, UK, July 9-11, 2007), pp. 205--211.
• Tetsushi Nishida and Kokichi Sugihara: Direct diffusion method for the construction of generalized Voronoi diagrams. Proceedings of the 4th International Symposium on Voronoi Diagrams in Science and Engineering (Pontypridd, Wales, UK, July 9-11, 2007), pp. 145--151.
• Masaki Moriguchi and Kokichi Sugihara: Restricted edge contractions in triangulations of the sphere with boundary. The 19th Canadian Conference on Computational Geometry (CCCG2007) (Ottawa, Canada, August 20-22, 2007).
• Kokichi Sugihara and Tetsushi Nishida: Stable computation of the optimal path for a boat on a water stream and its applications. 8th Hellenic-European Conference on Computer Mathematics and Its Applications (Athens, Greek, September 20-22, 2007).
• Bahlul Haider and Kokichi Sugihara: Almost Delaunay triangulation routing in wireless sensor networks. Brouchure of the 10th International Conference on Computer and Information Technology (Dhaka, Bangladesh, December 27-29, 2007), p.39.
• Masaki Moriguchi and Kokichi Sugihara: Discrete Voronoi diagrams on surface triangulations and a sampling condition for topological guarantee. Collection of Abstracts of the 24th European Workshop on Computational Geometry (Nancy, France, March 18-20, 2008), pp. 201--204.
• Tomohiro Ohgami and Kokichi Sugihara: Realizability of solids from three silhouettes. Collection of Abstracts of the 24th European Workshop on Computational Geometry (Nancy, France, March 18-20, 2008), pp. 233--236.
• Bahlul Haider and Kokich Sugihara: An energy efficient routing approach for wireless sonsor networks. Advances in Computer Science and Engineering, vol. 34 (2008), pp. 261--276.
• Minori Okabe, Shinji Imahori and Kokichi Sugihara: Improvement of the method for making quad meshes through temperature contours. Proceedings of the 25th European Workshop on Computational Geometry (Brussels, March 16-18, 2009), pp. 93--96.
• Kazutoshi Kan and Kokichi Sugihara: Robust extraction of the medial axes of 3d objects. Proceedings of the 25th European Workshop on Computational Geometry (Brussels, March 16-18, 2009), pp. 309--312.
• Hiroshi Koizumi and Kokichi Sugihara: Computer aided design system for Escher-like tilings. Proceedings of the 25th European Workshop on Computational Geometry (Brussels, March 16-18, 2009), pp. 345--348.
• Takuya Hara and Kokich Sugihara: Computer-aided design of pop-up books with two-dimensional V-fold structures. Abstracts on 7th Japan Conference on Computational Geometry and Graphs (Kanazawa, November 11-13, 2009), pp. 109--110.
• Hiroshi Koizumi and Kokichi Sugihara: Maximum eigenvalue problem for Escherization. Abstracts on the 7th Japan Conference on Computational Geometry and Graphs (Kanazawa, November 11-13, 2009), pp. 53--54.
• Hidenori Fujii and Kokichi Sugihara: Round-tour Voronoi diagrams. Proceedings of the 6th International Symposium on Voronoi Diagrams in Science and Engineering (Kopenhagen, June 23-26, 2009), pp. 137-143.
• Kokichi Sugihara: Voronoi-diagram approach to Escher-like tiling. Proceedings of the 7th International Symposium on Voronoi Diagrams in Science and Engineering (Quebec, June 28-30, 2010), pp. 199-204.
• K. Sugihara, T. Sato and A. Okabe: Simple and unbiased kernel density functions for network analysis. Proceedings of the 10th International Symposium on Communication and Information Technologies (ISICT 2010) (Tokyo, October 26-29, 2010), pp. 827-832.
• Kokichi Sugihara: Design of antigravity slopes for visual illusion. 27th European Workshop on Computational Geometry (Morschach, Switzerland, March 28-30, 2011), pp. 55-58.
• Kokichi Sugihara: Computer-aided generation of triply-crossing tile Patterns. Proceedings of the 28th European Workshop on Computational Geometry (Assisi, March 19-21, 2012), pp. 265-268.
• Deok-Soo Kim and Kokichi Sugihara: Tunnels and voids in molecules via Voronooi diagram. 9th International Symposium on Voronoi Diagrams in Science and Engineering (ISVD 2012) (Piscataway, New Jersey, USA, June 27-29, 2012).
• Akiyasu Tomoeda and Kokichi Sugihara: Computational creation of a new illusionary solid sign. 9th International Symposium on Voronoi Diagrams in Science and Engineering (ISVD 2012) (Piscataway, New Jersey, USA, June 27-29, 2012), pp.~144--147.
• Kokichi Sugihara: Impossible motions --- A new type of visual illusion generated by shape-from-image equations. European Conference on Visual Perception (Alghero, Italy, September 2-6, 2012).
• Kokichi Sugihara: Design of Pop-Up Cards Based on Weighted Straight Skeletons. 10th International Symposium on Voronoi Diagrams in Science and Engineering (ISVD 2013) (Saint Petersburg, Russia, July 8-10, 2013).
• K. Sugihara: Right-angle preference in impossible objects and impossible motions. Proceedings of Bridges 2014: Mathematics, Music, Art, Architecture, Culture (Seoul, Korea, August 14-19, 2014), pp. 449-452.
• S. Chaidee and K. Sugihara: Comparison between curved-surface tessellations and the Voronoi diagrams using planar photographic images. The 17th Japan Conference on Discrete and Computational Geometry and Graphs (Tokyo, September 15-16, 2014), pp. 11-12.
• K. Sugihara: Mathematical modeling approach to creation of anomalous motion illusions. Proceedings of the Fourth IIEEJ International Workshop on Image Electronics and Visual Computing (Koh Samui, Thailand, October 7-10, 2014), C-3, 4pp.
• S. Chaidee and K. Sugihara: A method for fitting real world tessellations with Voronoi diagrams. 31st European Workshop on Computational Geometry (Ljubljana, Slovenia, March 15-18, 2015).
• K. Sugihara: Design of ambiguous cylinders. Asina Forum on Graphic Science, Electric Proceedings, F07, (Bangkok, August 5-9, 2015), 8pp.
• S. Chaidee and K. Sugihara: Numerical fitting of planar photographic images with spherical Voronoi diagrams. Asina Forum on Graphic Science, Electric Proceedings, F21, (Bangkok, August 5-9, 2015), 7pp.
• A. Tomoeda and K. Sugihara: Computational creation of hollow mask type illusionary solids. Asina Forum on Graphic Science, Electric Proceedings, F03, (Bangkok, August 5-9, 2015), 7pp.
• M. Lee, K. Sugihara and D.-S. Kim: Robust construction of the additively-weighted Voronoi diagram via topology-oriented incremental algorithm. G.-M. Greuel, T. Koch, P. Paule, A. Sommese (eds.), Mathematical Software - ICMS 2016, 5th International Conference (Berlin, Germany, July 11-14, 2016), LNCS 9725, pp. 516-521.
• S. Chaidee and K. Sugihara: Recognition of the Spherical Laguerre Voronoi Diagram. ACM Annual Symposium on Computational Geometry (SoCG 2016), (Boston, June 15, 2016), Abstracts of Young Researchers Forum, pp. 5-6.
• K. Sugihara: Evolution of Impossible Object. 13th Gathering for Gardner Conference, (Atlanta, April 11-15, 2018).

Invited Talks at International Conference

• Kokichi Sugihara: Application of the Delaunay triangulation to geometric intersection problems. P. Kall (ed.): System Modelling and Optimization (Proceedings of the 15th IFIP Conference, September 2-6, 1991, Zurich), Lecture Notes in Control and Information Sciences, no. 180, Springer-Verlag, 1992, pp. 112--121.
• Kokichi Sugihara: Degeneracy and instability in geometric computation. Sixth IFIP WG 5.2 International Workshop on Geometric Modeling: Fundamentals and Applications (December 7-9, 1998, Tokyo), pp. 5--15.
• Kokichi Sugihara: Impossible objects are not necessarily impossible --- mathematical study on optical illusion. Proceedings of Japan Conference on Discrete and Computational Geometry '98 (December 9-12, 1998, Tokyo), pp. 54--65.
• Kokichi Sugihara: Topology-oriented approach to robust geometric algorithms. A. Aggarwal and C. P. Rangan (eds.): Algorithms and Computation (ISSAC'99, Chennai), Lecture Notes in Computer Science, vol. 1741 (1999), pp. 357--366.
• Kokichi Sugihara: Topology-based methods for robust geometric computing. Proceedings of the Korea Israel Bi-National Conference on Geometric Modeling and Computer Graphics in the World Wide Web Era (September 30, 1999, Korea), pp. 1--7.
• Kokichi Sugihara: Robust geometric computation based on topological consistency. V. N. Alexandrov, J. J. Dongarra, B. A. Juliani, R. S. Renner, C. J. Kenneth Tan (eds.): Computational Science-ICCS 2001, Lecture Notes in Computer Science, vol. 2073 (2001), pp. 12--26.
• Kokichi Sugihara: Trick pictures and human vision. The 14th Sendai International Symposium on Exploring the Human Brain, Mind and Information Theory (October 25, 26, 2002, Sendai), pp. 71--81.
• Kokichi Sugihara, Akira Fujimura and Tetsushi Nishida: Evaluation of sport teamwork based on Voronoi diagrams. ISM Symposium on Statistics, Combinatorics and Geometry (March 20-22, 2003, Tokyo), p. 10.
• Kokichi Sugihara: Robust geometric computation based on digital topology. Kyung-Yong Chwa and J. Ian Munro (eds.): Computing and Combinatorics, Lecture Notes in Computer Science, vol. 3106 (2004), pp. 3--12. (Proceedings of the 10th International Computing and Combinatorics Conference, Jeju Island, Korea, August 17-20, 2004).
• Kokichi Sugihara: Use of digital topology for robust geometric computation. 14th International Meshing Roundtable (San Diego, California, U.S.A., September 11-14, 2005).
• Kokichi Sugihara: Computer-aided creation of impossible objects and impossible motions. The Kyoto International Conference on Computational Geometry and Graph Theory (Kyoto, Japan, June 11-15, 2007). H. Itr et al. (eds.), LNCS 4535, pp. 201--212, 2008.
• Kokichi Sugihara: Spatial realization of Escher's impossible world. 8th Hellenic-European Conference on Computer Mathematics and Its Applications (Athens, Greek, September 20-22, 2007).
• Kokichi Sugihara: Toward superrobust geometric computation. Prodeedings of the ACM Solid and Physical Modeling Symposium (Stony Brook, New York, June 2-4, 2008), pp. 11--12.
• Kokichi Sugihara: Why is geometric computation difficult, and how can we overcome? International Workshop on Numerical Verification and Its Applications (INVA2010) (Hachijyo Island, Japan, March 10-15, 2010).
• Kokichi Sugihara: Computational Illusion --- How to Design Impossible Solids and Impossible Motions. Asian Conference on Design and Digital Engineering (Jeju Island, Korea, August 25-28, 2010).
• Kokichi Sugihara: Why are Voronoi diagrams so fruitful in application? Proceedings of the 8th International Symposium on Voronoi Diagrams in Science and Engineering (Qingdao, June 28-30, 2011), p. 14. (DOI: 10.1109/ISVD.2011.10)
• Kokichi Sugihara: Computational Geometry in the Human Brain. Proceedings of the 16th Japan Conference on Discrete and Computational Geometry and Graphics (JCDCG^2 2013) (Tokyo, September 17-19, 2013), pp.14-15.
• Kokichi Sugihara: Principle of independence for robust geometric software learned by the human visual computation. 4th International Congress on Mathematical Software (ICMA 2014) (Seoul, Korea, July 5-9, 2014).
• K. Sugihara: Impossible objects as a tool for understanding the human vision systems. Invited talk, Asina Forum on Graphic Science (AFGS 2015), (Bangkok, August 5-9, 2015).

和文論文

• 杉原厚吉： 連想の位相構造の研究. 東京大学工学部計数工学科提出卒業論文, 1971 年 3 月.
• 杉原厚吉： 概念構造を決定するための数理的一手法. 東京大学大学院工学系研究科計数工学専門課程提出修士論文, 1973 年 3 月.
• 杉原厚吉： 頂点辞書を利用した距離画像解析. 情報処理学会論文誌, 20 巻 1 号（1979 年 1 月）, pp. 39-44.
• 杉原厚吉： 多面体線画の代数的解析法. 電子通信学会論文誌, 62D 巻 3 号（1979 年 3 月）, pp. 201-208.
• 杉原厚吉： 多面体透視図の数理的性質とその応用に関する研究. 東京大学大学院工学系研究科計数工学専門課程提出学位論文, 1980 年 2 月. [または 多面体透視図の数理的性質とその応用に関する研究. 電子技術総合研究所研究報告, 800 号（1979 年 11 月）].
• 杉原厚吉： 多面体線画の数理的構造 --- 線画を介した計算機との対話を めざして. 情報処理, 22 巻 3 号（1981 年 3 月），pp. 209--217.
• 杉原厚吉： 多面体線画と２次元滑節構造のある対応について. 電子通信学会論文誌, 64A 巻 8 号（1981 年 8 月）, pp. 690--691.
• 杉原厚吉： 作図問題の解の一意性判定について. 図学研究, 30 号（1982 年 3 月）, pp. 1--6.
• 杉原厚吉： 内部自由度をもった連立方程式における構造的不整合とその検出方法. 電子通信学会論文誌, 65A 巻 9 号（1982 年 9 月）, pp. 911--918.
• 杉原厚吉： 線画の代数構造を利用した単眼画像からの立体復元法. 電子通信学会論文誌, 66D 巻 5 号（1983 年 5 月）, pp. 541--548.
• 河合敦夫, 杉原厚吉, 杉江昇： 英文の誤り検出のための構文標準化法. 電子通信学会論文誌, 66D 巻 5 号（1983 年 5 月）, pp. 511--518.
• 太田享寿, 杉原厚吉, 杉江昇： 分散値を利用した画像合成法. 　　 電子通信学会論文誌, 66D 巻 10 号（1983 年 10 月）, pp. 1245--1246.
• 杉原厚吉： 立体視. 日本ロボット学会誌, 1 巻, 4 号（1983 年 12 月）, pp. 270--275.
• 河合敦夫, 杉原厚吉, 杉江昇： 英文の誤りを検出するシステム ＡＳＰＥＣ−Ｉ. 情報処理学会論文誌, 25 巻 6 号（1984 年 11 月），pp. 1072--1079.
• 田中敏光, 杉原厚吉, 杉江昇： 多面体に対する寸法指定情報の適正さと その判定法. 情報処理学会論文誌, 26 巻 1 号（1985 年 1 月），pp. 104--111.
• 河合敦夫, 杉原厚吉, 杉江昇： 英文添削のための対話型システム 　ＡＳＰＥＣ−ＩＩ. 情報処理学会論文誌, 26 巻 5 号（1985 年 9 月），pp. 815--823.
• 柴田勉, 杉原厚吉, 杉江昇： 正射影速度場からの関節物体の立体情報復元法. 電子通信学会論文誌, 68D 巻 9 号（1985 年 9 月）, pp. 1689--1696.
• ・開華, 杉原厚吉, 杉江昇： 多数の円錐光束を利用した三次元情報抽出法. 電子通信学会論文誌, 68D 巻 9 号（1985 年 9 月）, pp. 1697--1704.
• ・開華, 杉原厚吉, 杉江昇： パターン投影像とカメラの前進移動を利用した三次元物体計測. 日本ロボット学会誌, 5 巻 6 号（1987 年 6 月）, pp. 442-451.
• 杉原厚吉, 伊理正夫： 計算誤差による暴走の心配のないソリッドモデラの提案. 情報処理学会論文誌, 28 巻 9 号（1987 年 9 月），pp. 962--974.
• 関和徳, 杉原厚吉, 杉江昇： 図形変換規則を用いた錯視現象のモデル化. 電子情報通信学会論文誌, 70D 巻 12 号（1987 年 12 月）, pp. 2668--2677.
• 川村旭, 杉原厚吉, 杉江昇： オプティカルフローを用いた非剛体線状物体の 復元. 電子情報通信学会論文誌, 71D 巻 2 号（1988 年 2 月）, pp. 406--415.
• 佐川雄二, 杉原厚吉, 杉江昇： 柔軟な対話制御機構をもったコンサルテーション・システム. 情報処理学会論文誌, 29 巻 4 号（1988 年 4 月），pp. 350--358.
• 杉原厚吉： 図形処理における数値的諸問題とその対策. 東京大学工学部紀要, A-27 号（1989 年）, pp. 40--41.
• 杉原厚吉： 隠線消去における例外除去のための記号的摂動法. 豊田研究報告　 第 42 報告（1989 年 5 月）, pp. 33--39.
• 大石泰章, 杉原厚吉：数値的に安定な分割統治型 Voronoi 図構成算法． 情報処理学会論文誌, 32 巻 6 号（1991 年 6 月），pp. 709--720.
• 谷口行信, 杉原厚吉：検出もれのない代数曲線の追跡法. 情報処理学会論文誌, 33 巻 10 号（1992 年 10 月），pp. 1245--1253.
• 杉原厚吉： 数値誤差と幾何学的整合性 --- 暴走の心配のないアルゴリズムを めざして ---. 電子情報通信学会誌, 76 巻 6 号（1993 年 6 月）, pp. 618--625.
• 稲垣宏, 杉原厚吉, 杉江昇： ３次元ボロノイ図構成のための数値的に安定な逐次添加法. 情報処理学会論文誌, 35 巻 1 号（1994 年 1 月）, pp. 1--10.
• 今井敏行，杉原厚吉： 誤差による破綻の心配のない線分 Voronoi 図構成算法. 情報処理学会論文誌, 35 巻 10 号（1994 年 10 月）, pp. 1966--1977.
• 稲垣宏, 杉原厚吉：３次元ドロネー図の構築における退化に起因する問題点 とその対策. 電子情報通信学会論文誌, J79-D-II 巻 10 号（1996 年 10 月）, pp. 1696--1703.
• 杉原厚吉, 今井敏行, 畑口剛之： 図形の可逆なミンコフスキー和の提案. 電子情報通信学会論文誌, J80-D-II 巻 10 号（1997 年 10 月）, pp. 2663--2670.
• 畑口剛之, 杉原厚吉：線分の交点列挙問題に対する平面走査法の改良. 日本応用数理学会論文誌, 8 巻 2 号（1998 年 6 月）, pp. 257--274.
• 小林景，杉原厚吉： 乗法重みつき結晶成長ボロノイ図の近似構成法とその 応用. 電子情報通信学会論文誌, J83-A 巻 12 号（2000 年 12 月）, pp. 1495--1504.
• 坂井秀行，杉原厚吉：図形の中心軸の安定した生成法． 電子情報通信学会論文誌, J85-D-II 巻 11 号（2002 年 11 月）, pp. 1637--1644.
• 藤村光，杉原厚吉： 優勢領域に基づいたスポーツチームワークの定量的評価. 電子情報通信学会論文誌, J87-D-II 巻 3 号（2004 年 3 月）, pp. 818--828.
• 神田毅, 杉原厚吉，森本康彦： 幾何アルゴリズム加速のための混合演算に 関する研究. 日本応用数理学会論文誌, 14 巻 2 号（2004 年 6 月）, pp. 117--150.
• 室谷浩平，杉原厚吉: 大域的滑らかさを優先した標高データからの地形復元法 の提案．GIS-理論と応用，12巻 1号 (2004 年 7 月）, pp. 1--13.
• 谷口隆晴，杉原厚吉: 空間多次元Navier-Stokes方程式に対する無反射境界 条件．ながれ，24巻(2005年3月)，pp. 81--91.
• 長井超慧，杉原厚吉: 滑らかな境界を表現する等方的四面体メッシュ生成法. 日本応用数理学会論文誌，17 巻 3 号 (2007 年 10 月), pp. 347--361.
• 長井超慧，杉原厚吉，鈴木宏正: 頂点追加による2次元DistMeshの等方性向上. 日本応用数理学会論文誌，17 巻 3 号 (2007 年 10 月), pp. 195--217.
• 　　　川原田寛，杉原厚吉：細分割を用いた完全六面体メッシュ生成．計算工学， 　　　vol. 16, no. 2 (2011), pp. 12-15.
• 杉原厚吉：投影の幾何学と立体錯視．心理学評論、vol. 55, no. 3(2012), pp. 296-306.
• 友枝明保、小野隼、杉原厚吉：幾何計算と陰影計算を用いたホロウマスク型 錯視立体「陰影つき矢印の幻惑」の設計法．図学研究, 第49巻，4号 (2015), pp. 3--9.

Presentations with Short Abstracts

• Kokichi Sugihara and Masao Iri: Geometric algorithms in finite-precision arithmetic. Abstracts of the 13th International Symposium on Mathematical Programming (August 29 - September 2, 1988, Tokyo), WE/3K2, p. 196.
• Kokichi Sugihara and Masao Iri: Laying more stress on topological structures than on numerical values in finite-precision geometric computation. Abstracts of SIAM Conference on Geometric Design (November 6-10, 1989, Tempe, Arizona), p. A43.
• Kokichi Sugihara: Numerically robust and consistent algorithms for three-dimensional convex polyhedra. Workshop on Algorithmic Aspects of Cominatorics and Geometry (October 23, 1992, Tokyo).
• Kokichi Sugihara: Numerical problems in algorithms and architectures. T. Ishiguro (ed.): Algorithms and Architectures, Proceedings of the Second NEC Research Symposium (August 21-22, 1991, Tsukuba), SIAM, Philadelphia, 1993, pp. 249--254.
• Kokichi Sugihara: How to construct impossible objects. The Second Symposium on Polyhedron and Arrangement (May 22-24, 1995, Shizuoka).
• Kokichi Sugihara: Power diagram on the sphere and its implementation. Workshop on Voronoi Diagrams, Triangulations and Splines, (February, 1997, Tempe, Arizona, U.S.A.).
• Kokichi Sugihara: Voronoi diagram as a tool for space analysis. INFORMS San Diego 1997 (May 4-7, 1997, San Diego, U.S.A.), SD28-2.
• Osami Yamamoto and Kokichi Sugihara: Computation of various types of Voronoi diagrams using graphics hardware. Program of INFORMS International Hawaii (June 17-20, 2001, Hawaii), TD22-2, p. 39.
• Takeshi Kanda and Kokichi Sugihara: Scale of likeness to the Voronoi diagram. ISM Symposium on Statistics and Discrete Geometry: Application to Crystallography and Chemistry (March 25-26, 2002), p. 10.
• Kokichi Sugihara and Kei Kobayashi: Finite-difference approach to crystal Voronoi diagrams. ISM Symposium on Statistics and Discrete Geometry: Application to Crystallography and Chemistry (March 25-26, 2002), p. 17.
• Kohei Murotani and Kokichi Sugihara: Watermarking 3D polygonal meshes using the singular spectrum analysis. ISM Symposium on Statistics, Combinatorics and Geometry (March 20-22, 2003, Tokyo), p. 7.
• Hiroshi Kawaharada and Kokichi Sugihara: Mesh Data Compression Based on Star-Shape Decomposition. ISM Symposium on Statistics, Combinatorics and Geometry (March 20-22, 2003, Tokyo), p. 8.
• Kokichi Sugihara and Shiro Matuura: Fast and robust disk packing based on digital topology. 2nd Meeting of Euro Special Interest Group on Cutting and Packing (Southampton, U.K., April 14-16, 2005).
• Kokichi Sugihara: Application of topology-based geometric computation to disk packing. International Workshop on Discrete Optimization (Kyoto, December 6, 2005).
• Kokichi Sugihara: Unsolved problems in robustness of geometric algorithms. T. Tokuyama (ed.): Computational Geometry and Discrete Mathematics, RIMS Kokyuroku 1641m April 2009, pp. 99-105.
• K. Sugihara: Ambiguous cylinders: A new class of solid that evokes anomalous perception. 15th Annual Meeting of the Vision Science Society (VSS 2015), 36.4106, (St. Peters Beach, Florida, USA, May 17, 2015).

解説記事

• 杉原厚吉, 伊理正夫： ２部グラフの分割理論を利用した概念構造決定法. オペレーションズ・リサーチ（日本オペレーションズ・リサーチ学会 機関誌）, 23 巻 8 号（1978 年 8 月），pp. 504--510.
• 杉原厚吉： 清書プログラム. 情報処理, 20 巻 11 号（1979 年 11 月）， pp. 970--973.
• 杉原厚吉： コンピュータ・アニメーションのための情景記述の一手法と線画を使った 立体情報入力法. 京都大学大型計算機センター広報, 15 巻 1 号 （1982 年 2 月）, pp. 49--62.
• 杉原厚吉： 情景解析のための数理的アプローチ. 名古屋大学大型計算機センターニュース, 13 巻 2 号（1982 年 5 月）, pp. 240--251.
• 杉原厚吉： 立体構造の平面図形からの抽出. 計測と制御, 22 巻 2 号（1983 年 2 月），pp. 201--208.
• 鳥脇純一郎, 杉原厚吉, 辻三郎, 福島邦彦, 外山敬介, 杉江昇： コンピュータビジョンと視覚情報処理. 情報処理, 25 巻 9 号 （1984 年 9 月）, pp. 963--970.
• 杉原厚吉： 凸多面体分割により実現する多面体のリアルタイム表示手法. ＰＩＸＥＬ，39 号（1985 年 12 月）, pp. 139--145.
• 杉原厚吉： スケッチ画を利用した多面体形状の柔軟な入力法. ＰＩＸＥＬ，40 号（1986 年 1 月）, pp. 67--73.
• 杉原厚吉： 画像からの立体の認識. テレビジョン学会誌, 41 巻 9 号 （1987 年 9 月），pp. 787--793.
• 杉原厚吉： 図形の移動と変形に関する推論技術. 情報処理，28 巻 11 号 （1987 年 11 月），pp. 1485--1492.
• 杉原厚吉： 視覚ロボット. エレクトロニクス, 1989 年 1 月号, pp. 60--65.
• 杉原厚吉，金谷健一： 数理的手法による三次元情報抽出. 人工知能学会誌, 4 巻 1 号（1989 年 1 月），pp. 13--20.
• 杉原厚吉： 計算幾何学的手法と画像解析 --- ボロノイ図の応用を中心として. 情報処理，30 巻 9 号（1989 年 9 月），pp. 1067--1075.
• 杉原厚吉： 線画解釈の理論と視覚. 特集ニューロコンピュータ, part II （杉江昇編）, コンピュートロール, 29 号（1990 年）, pp. 14--19.
• 杉原厚吉： 幾何アルゴリズムの数値的破綻とその対策. 応用数理, 1 巻 4 号 （1991 年 12 月），pp. 2--21.
• 杉原厚吉： 計算幾何学と画像処理． 画像ラボ, 日本工業出版, 3 巻 6 号 （1992 年 6 月）, pp. 18--22.
• 杉原厚吉：Voronoi 図 --- 世界チャンピオンまでの道. bit, 25 巻 1 号 （1993 年 1 月）, pp. 24--34.
• 杉原厚吉： 位相優先法 --- 暴走の心配のない幾何アルゴリズムの設計法. ＰＩＸＥＬ, 124 号（1993 年 1 月）, pp. 90--91.
• 杉原厚吉： ソフトウェアは進歩しているか. bit, 26 巻 12 号 （1994 年 12 月）, p. 3.
• 杉原厚吉： 応用数理の遊歩道 (1), 部屋を実際より広く見せる写真術. 応用数理, 5 巻 1 号（1995 年 3 月），pp. 48--50.
• 杉原厚吉： 応用数理の遊歩道 (2), 不可能物体の作り方. 応用数理, 5 巻 2 号（1995 年 6 月），pp. 141--144.
• 杉原厚吉： 応用数理の遊歩道 (3), 一枚の絵による立体視. 応用数理, 5 巻 3 号（1995 年 9 月），pp. 254--256.
• 杉原厚吉： 応用数理の遊歩道 (4), 幻の研究テーマ. 応用数理, 5 巻 4 号 （1995 年 12 月），pp. 388--391.
• 杉原厚吉： 生物となわばり. 数学セミナー，34 巻 11 号（1995 年 11 月）, pp. 44--48.
• 杉原厚吉： ボロノイ図を通して見ると・・・. 数学セミナー，35 巻 4 号 （1996 年 4 月）, pp. 66--70; 5 号（1996 年 5 月）, pp. 78--81; 6 号（1996 年 6 月）, pp. 72--75; 7 号（1996 年 7 月）, pp. 74--78; 8 号（1996 年 8 月）, pp. 80--84; 9 号（1996 年 9 月）, pp. 68--72; 10 号（1996 年 10 月）, pp. 68--72; 11 号（1996 年 11 月）, pp. 78--83; 12 号（1996 年 12 月）, pp. 72--76; 36 巻 1 号（1997 年 1 月）, pp. 76--80; 2 号（1997 年 2 月）, pp. 68--71; 3 号（1997 年 3 月）, pp. 68--72.
• 杉原厚吉： 幾何学と視覚情報処理. 電子情報通信学会誌, 79 巻 7 号（1996 年 7 月）, pp. 717--719.
• 杉原厚吉： 計算幾何学と空間推論． 人工知能学会誌, 12 巻 2 号（1997 年 3 月）, pp. 216--222.
• 杉原厚吉： ３次元単体メッシュ生成の課題---計算幾何学の立場から---． 京都大学数理解析研究所講究録, 1084（1999 年 2 月）, pp. 124--134.
• 杉原厚吉： 超ロバスト幾何計算 (1) 超図形. 数学セミナー，2006年4月, pp. 66--71.
• 杉原厚吉： 超ロバスト幾何計算 (2) 超精度. 数学セミナー，2006年5月, pp. 59--63.
• 杉原厚吉： 超ロバスト幾何計算 (3) 超例外. 数学セミナー，2006年6月, pp. 70--74.
• 杉原厚吉：新しいものを創造する力 --- 対象化原理．数学書房編集部（編）： 「この定理が美しい」，数学書房，東京，2009, pp. 99--197.
• 杉原厚吉：幾何とグラフィックス．数理科学「特集／現代数学はいかに 使われているか [幾何編]」，no. 550, 2009年4月号，pp. 31-35.
• 杉原厚吉：投影逆変換と立体錯視．数学セミナー 特集「錯覚の数理」， 2011年3月号，pp. 24-27.

研究会などでの発表

• 日吉久礎，杉原厚吉： Voronoi図を用いた従来より連続性の高い補間公式 の構築． 電子情報通信学会技術研究報告コンピュテーション研究会, COMP 99-72 （2000 年 1 月）.
• 杉原厚吉: 厳密計算と記号摂動と遅延評価を用いた幾何アルゴリズムの実装． 　　　日本応用数理学会2000年度年会講演予稿集 (2000年9月), pp. 170--171.
• 藤村光，杉原厚吉： ボロノイ図を応用したスポーツチームワークの定量的 評価． 電子情報通信学会技術研究報告パターン認識とメディア理解研究会, PRMU2000-242（2001年 1 月）.
• フォガラス・ダニエル，杉原厚吉： 直線アレンジメントを構成するための 位相優先アルゴリズム． 電子情報通信学会技術研究報告コンピュテーション研究会, COMP2001-15 （2001年 6 月）, pp. 17--23.
• 室谷浩平，杉原厚吉: 不規則メッシュのG^1連続な補間曲面の生成法． 　　情報処理学会　グラフィックスとCAD研究会，2001-CG-105-9 (2001年11月)．
• 西田徹志，杉原厚吉: スポーツビデオデータからの選手の位置検出システム． 　　 電子情報通信学会技術研究報告パターン認識とメディア理解研究会， 　　 PRMU 2002-32 (2002年6月)．
• 川原田寛，杉原厚吉: 細分割曲面のフィッティングによるメッシュデータの 圧縮．情報処理学会　グラフィックスとCAD研究会，108-1 (2002年8月), pp. 1--6．
• 杉原厚吉： 大規模メッシュ生成技術の現状と展望． 第13回電磁界数値解析に関するセミナー講演論文集（2003年11月17日）, pp. 1--12.
• 西田徹志，杉原厚吉: FEM Fast Marching Methodによるボート航行距離の計算． 　　情報処理学会研究報告(アルゴリズム研究会)，2004-AL-93 (2004年1月30日)
• 日吉久礎，杉原厚吉: Voronoi図に基づく補間法の大域的連続性の向上． 　　 情報処理学会研究報告(アルゴリズム研究会)，2004-AL-94 (2004年3月19日), 　　 pp. 109--116．
• 杉原厚吉: 大規模メッシュ生成技術の現状と課題． 日本応用数理学会講習会「デジタル設計を支えるメッシュ生成技術の最前線」 　　　（2004年4月23日）, pp. 1--8.
• 谷口隆晴，杉原厚吉: 非粘性圧縮流体方程式に対する方向適合型無反射境界 条件．第33回数値解析シンポジウム講演予稿集 (2004年5月19日-21日), pp. 13--16.
• Tetsushi Nishida and Kokichi Sugihara: Robust numerical method for the boat-sail distance and its applications. 　　 第33回数値解析シンポジウム講演予稿集 (2004年5月19日-21日), pp. 65--68.
• 佐藤洋平，杉原厚吉: PCへのマルチモーダルな入力手段としてのジェスチャ 認識．情報処理学会研究報告(コンピュータビジョンとイメージメディア 研究会)，2004-CVIM-145 (2004年9月11日), pp. 171--178.
• 佐藤洋平，杉原厚吉: PCへの入力手段としての実時間ジェスチャ認識のため の一手法．電子情報通信学会技術報告 PRMU 2004-194 (2005年2月), pp. 91--96．
• 森口昌樹，杉原厚吉：Edge Collapse とSizing Functionを用いた等方的 メッシュへの簡略化法． 　　情報処理学会　グラフィックスとCAD研究会 (2005年8月18日−19日，金沢)．
　　　
• 川原田寛，杉原厚吉：面と線に基づく細分割の拡張． 　　 情報処理学会　グラフィックスとCAD研究会 (2005年8月18日−19日，金沢)．
• 森口昌樹，杉原厚吉：Combining sizing functions and edge collapse heuristics for isotropic mesh coarsening． 　　 日本応用数理学会2005年度年会オーガナイズドセッション 「メッシュ生成とその応用」 (2005年9月仙台).
• 森口昌樹，杉原厚吉：表面メッシュ上での領域拡張法とトポロジーの保存． 　　日本応用数理学会2006年度年会 (2006年9月東京), pp. 40--41.
• 長井超慧，杉原厚吉，鈴木宏正： 　　 等方的な2次元三角形メッシュへの頂点追加による品質改善． 　　 日本応用数理学会2006年度年会 (2006年9月東京), pp. 44--45.
• 室谷浩平，杉原厚吉： 　　 拡張SSAを用いた画像のノイズ除去法． 　　 日本応用数理学会2006年度年会 (2006年9月東京), pp. 70--71.
• 大神智洋，杉原厚吉：3枚の2Dシルエット画像からの3D形状設計． 　　 情報処理学会　グラフィックスとCAD研究会 (2007年2月19日−20日，東京)．
• 長井超慧，杉原厚吉： 滑らかな境界を表現する等方的四面体・メッシュ生成法． 　　 平成19年度日本応用数理学会研究部会連合発表会 (2007年3月3日−4日，名古屋).
• 森口昌樹，杉原厚吉：メッシュ簡略化における辺の可能性の効率的な計算法． 　　 平成19年度日本応用数理学会研究部会連合発表会 (2007年3月3日−4日，名古屋).
• 小泉拓，杉原厚吉：エッシャー風タイリングの計算機支援設計． 　　 NICOGRAPH 2009 (2009年10月23‐24日，東京).
• 杉原厚吉：不可能立体／不可能モーションの数理１．応用数理，チュートリアル 　　 25巻1号，2015年3月．