World's Best Scientists 2026 revealed!
Kokichi Sugihara

Kokichi Sugihara

D-Index & Metrics

Mathematics

D-Index
39
Citations
12694
World Ranking
2123
National Ranking
33

Kokichi Sugihara publication distribution in Mathematics in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Mathematics in 2026. The highlighted bar marks where Kokichi Sugihara sits on this spectrum.

42–46 publications: 3 scientists 47–51 publications: 5 scientists 52–56 publications: 7 scientists 57–61 publications: 20 scientists 62–66 publications: 14 scientists 67–71 publications: 25 scientists 72–76 publications: 19 scientists 77–81 publications: 35 scientists 82–86 publications: 50 scientists 87–91 publications: 60 scientists 92–96 publications: 86 scientists 97–101 publications: 84 scientists 102–106 publications: 83 scientists 107–111 publications: 90 scientists 112–116 publications: 99 scientists 117–121 publications: 90 scientists 122–126 publications: 91 scientists 127–131 publications: 109 scientists 132–136 publications: 110 scientists 137–141 publications: 98 scientists 142–146 publications: 112 scientists 147–151 publications: 102 scientists 152–156 publications: 88 scientists 157–161 publications: 106 scientists 162–166 publications: 83 scientists 167–171 publications: 102 scientists 172–176 publications: 77 scientists 177–181 publications: 81 scientists 182–186 publications: 78 scientists 187–191 publications: 71 scientists 192–196 publications: 92 scientists 197–201 publications: 64 scientists 202–206 publications: 69 scientists 207–211 publications: 64 scientists 212–216 publications: 62 scientists 217–221 publications: 58 scientists 222–226 publications: 53 scientists 227–231 publications: 50 scientists 232–236 publications: 46 scientists 237–241 publications: 46 scientists 242–246 publications: 46 scientists 247–251 publications: 43 scientists 252–256 publications: 29 scientists 257–261 publications: 45 scientists 262–266 publications: 30 scientists 267–271 publications: 33 scientists 272–276 publications: 34 scientists 277–281 publications: 30 scientists 282–286 publications: 31 scientists 287–291 publications: 21 scientists 292–296 publications: 34 scientists 297–301 publications: 26 scientists 302–306 publications: 10 scientists 307–311 publications: 17 scientists 312–316 publications: 23 scientists 317–321 publications: 13 scientists 322–326 publications: 16 scientists 327–331 publications: 26 scientists 332–336 publications: 13 scientists 337–341 publications: 13 scientists 342–346 publications: 16 scientists 347–351 publications: 17 scientists 352–356 publications: 12 scientists 357–361 publications: 18 scientists 362–366 publications: 18 scientists 367–371 publications: 9 scientists 372–376 publications: 11 scientists 377–381 publications: 8 scientists 382–386 publications: 8 scientists 387–391 publications: 9 scientists 392–396 publications: 9 scientists 397–401 publications: 8 scientists 402–406 publications: 11 scientists 407–411 publications: 6 scientists 412–416 publications: 6 scientists 417–421 publications: 9 scientists 422–426 publications: 8 scientists 427–431 publications: 5 scientists 432–436 publications: 8 scientists 437–441 publications: 8 scientists 442–446 publications: 4 scientists 447–451 publications: 4 scientists 452–456 publications: 4 scientists 457–461 publications: 2 scientists 462–466 publications: 2 scientists 467–471 publications: 4 scientists 472–476 publications: 3 scientists 477–481 publications: 3 scientists 482–486 publications: 6 scientists 487–491 publications: 3 scientists 492–496 publications: 5 scientists 497–501 publications: 5 scientists 502–506 publications: 1 scientists 507–511 publications: 6 scientists 512–516 publications: 4 scientists 517–521 publications: 1 scientists 522–526 publications: 3 scientists 527–531 publications: 1 scientists 532–536 publications: 4 scientists 537+ publications: 100 scientists
42 publications 537+

This scientist: 225 publications — 70th percentile

70% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 537 publications or more.

Kokichi Sugihara D-index placement in Mathematics in 2026

The chart shows the D-index (discipline H-index) distribution of Mathematics scientists ranked by Research.com in 2026. The highlighted bar marks where Kokichi Sugihara sits on this spectrum.

30 D-Index: 174 scientists 31 D-Index: 151 scientists 32 D-Index: 174 scientists 33 D-Index: 117 scientists 34 D-Index: 136 scientists 35 D-Index: 127 scientists 36 D-Index: 145 scientists 37 D-Index: 153 scientists 38 D-Index: 150 scientists 39 D-Index: 150 scientists 40 D-Index: 138 scientists 41 D-Index: 136 scientists 42 D-Index: 93 scientists 43 D-Index: 108 scientists 44 D-Index: 115 scientists 45 D-Index: 112 scientists 46 D-Index: 103 scientists 47 D-Index: 75 scientists 48 D-Index: 59 scientists 49 D-Index: 67 scientists 50 D-Index: 60 scientists 51 D-Index: 57 scientists 52 D-Index: 59 scientists 53 D-Index: 62 scientists 54 D-Index: 60 scientists 55 D-Index: 50 scientists 56 D-Index: 42 scientists 57 D-Index: 54 scientists 58 D-Index: 50 scientists 59 D-Index: 42 scientists 60 D-Index: 41 scientists 61 D-Index: 35 scientists 62 D-Index: 40 scientists 63 D-Index: 21 scientists 64 D-Index: 31 scientists 65 D-Index: 27 scientists 66 D-Index: 29 scientists 67 D-Index: 19 scientists 68 D-Index: 25 scientists 69 D-Index: 17 scientists 70 D-Index: 18 scientists 71 D-Index: 12 scientists 72 D-Index: 14 scientists 73 D-Index: 13 scientists 74 D-Index: 18 scientists 75 D-Index: 9 scientists 76 D-Index: 11 scientists 77 D-Index: 10 scientists 78 D-Index: 9 scientists 79 D-Index: 16 scientists 80 D-Index: 12 scientists 81 D-Index: 10 scientists 82 D-Index: 5 scientists 83 D-Index: 5 scientists 84 D-Index: 13 scientists 85 D-Index: 6 scientists 86+ D-Index: 99 scientists
30 D-Index 86+

This scientist: 39 D-Index — 41st percentile

41% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 86 D-Index or more.

Overview

Kokichi Sugihara is affiliated with Meiji University in Japan and specializes in research within the field of Computer Science. Their work prominently covers several subfields including Computer Graphics and Computer-Aided Design, Computer Vision and Pattern Recognition, Cognitive Neuroscience, Computational Mechanics, and Industrial and Manufacturing Engineering.

Their research addresses multiple topics such as Computer Graphics and Visualization Techniques, Computational Geometry and Mesh Generation, 3D Surveying and Cultural Heritage, Data Visualization and Analytics, Visual Perception and Processing Mechanisms, 3D Shape Modeling and Analysis, and Advanced Numerical Analysis Techniques.

Sugihara's recent papers exemplify the scope and focus of their work. These include:

  • Rectangularity Is Stronger Than Symmetry in Interpreting 2D Pictures as 3D Objects, 2022, Frontiers in Human Neuroscience
  • Robust Construction of Voronoi Diagrams of Spherical Balls in Three-Dimensional Space, 2022, Computer-Aided Design
  • True Views from Depth-Exaggerated Images, 2021, Proceedings of the International Display Workshops
  • VOROPACK-D: Real-time disk packing algorithm using Voronoi diagram, 2020, Applied Mathematics and Computation
  • Ambiguous tiling, 2020, Computer Aided Geometric Design

Frequent co-authors collaborating with Sugihara include Mokwon Lee, Deok-Soo Kim, Joonghyun Ryu, Donguk Kim, and Josef Kallrath.

Their scholarly output is published in various venues, with multiple publications appearing in The Journal of the Society for Art and Science, Journal of Graphic Science of Japan, Japan Journal of Industrial and Applied Mathematics, and Journal of Illusion. Other venues include Applied Mathematics and Computation.

Best Publications

  • Spatial Tessellations: Concepts and Applications of Voronoi Diagrams

    Atsuyuki Okabe;Barry Boots;Kokichi Sugihara

  • A kernel density estimation method for networks, its computational method and a GIS-based tool

    Atsuyuki Okabe;Toshiaki Satoh;Kokichi Sugihara

  • Construction of the Voronoi diagram for 'one million' generators in single-precision arithmetic

    K. Sugihara;M. Iri

  • Spatial Tessellations: Concepts and Applications of Voronoi Diagrams

    Marjorie Senechal;Atsuyuki Okabe;Barry Boots;Kokichi Sugihara

  • Some location problems for robot navigation using a single camera

    Kokichi Sugihara

  • Voronoi diagram of a circle set from Voronoi diagram of a point set: geometry

    Deok-Soo Kim;Donguk Kim;Kokichi Sugihara

  • Mathematical Structures of Line Drawings of Polyhedrons-Toward Man-Machine Communication by Means of Line Drawings

    Kokichi Sugihara

  • Spatial Analysis Along Networks: Statistical and Computational Methods

    Atsuyuki Okabe;Kokichi Sugihara

  • A ROBUST TOPOLOGY-ORIENTED INCREMENTAL ALGORITHM FOR VORONOI DIAGRAMS

    Kokichi Sugihara;Masao Iri

  • Models of Spatial Processes

    Atsuyuki Okabe;Barry Boots;Kokichi Sugihara;Sung Nok Chiu

  • Nearest neighbourhood operations with generalized Voronoi diagrams: a review

    Atsuyuki Okabe;Barry Boots;Kokichi Sugihara

  • A solid modelling system free from topological inconsistency

    K. Sugihara;M. Iri

  • An algebraic approach to shape-from-image problems

    Kokichi Sugihara

  • Quasi-triangulation and interworld data structure in three dimensions

    Deok-Soo Kim;Donguk Kim;Youngsong Cho;Kokichi Sugihara

  • A Necessary and Sufficient Condition for a Picture to Represent a Polyhedral Scene

    Kokichi Sugihara

  • Approximation of generalized Voronoi diagrams by ordinary Voronoi diagrams

    Kokichi Sugihara

  • TWO GENERALIZATIONS OF AN INTERPOLANT BASED ON VORONOI DIAGRAMS

    Hisamoto Hiyoshi;Kokichi Sugihara

  • ON GOOD TRIANGULATIONS IN THREE DIMENSIONS

    Tamal Krishna Dey;Chanderjit L. Bajaj;Kokichi Sugihara

  • Extrapolation method of iterated collocation solution for two-dimensional nonlinear Volterra integral equations

    Han Guoqiang;Ken Hayami;Kokichi Sugihara;Wang Jiong

  • Three-dimensional beta-shapes and beta-complexes via quasi-triangulation

    Deok-Soo Kim;Youngsong Cho;Kokichi Sugihara;Joonghyun Ryu

  • Topology-Oriented Implementation—An Approach to Robust Geometric Algorithms

    Kokichi Sugihara;Masao Iri;Hiroshi Inagaki;Toshiyuki Imai

Frequent Co-Authors

Chandrajit L. Bajaj
Chandrajit L. Bajaj The University of Texas at Austin
Roman A. Laskowski
Roman A. Laskowski European Bioinformatics Institute
Tamal K. Dey
Tamal K. Dey Purdue University West Lafayette
Yoshiaki Shirai
Yoshiaki Shirai Ritsumeikan University
Jonathan M. Smith
Jonathan M. Smith University of Pennsylvania
Masayasu Mimura
Masayasu Mimura Hiroshima University

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