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Shin Yoshizawa

Title: Dr.-Ing. (Doktor-Ingenieur)
Affiliation: Image Processing Research Team,
Center for Advanced Photonics, RIKEN
Position: Senior Scientist
Address: 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
E-mail: shin[_at_]riken.jp
AGEPhone: +81 050-3502-5309
ORCiD:0000-0001-8748-6012

• Dr.-Ing. Shin Yoshizawa
• Curriculum Vitae
• My Scientific Ancestors
• Publication List
• Talk List

Field of Studies: Geometric Methods for Shape Modeling and Analysis

Shape Modeling and Analysis is a research field which treats a shape by the science and engineering techniques. This area was came from a design purpose with variational splines since 200 years. It is inherited by the computer aided design/manufacturing, and computer graphics. On the other hand, a solution in the field of mathematics about the algebraic or differential equation is equivalent to a shape. It had been used for describing and visualizing about the physical phenomenon of a nature, for example, isobar of a weather map. Furthermore, the solutions by which geometric structures, such as graph structure, were optimized has been used in computer vision and image processing by the computational topology and geometry. Although the computational speed and precision accuracy are always trade-off, the goal is developing the automatic algorithm which has high quality, high speed, and high reliability for the shape modeling and analysis.
• KEYWORDS: Curvature, Elastica, Skeleton, Interactive Deformation, Mesh Parameterization, Crest Lines, Smoothing

Selected Publications

	Adaptive and Dynamic Regularization for Rolling Guidance Image Filtering Miku Fukatsu, Shin Yoshizawa, Hiroshi Takemura, and Hideo Yokota: Pacific Graphics, Short Paper, pp. 43-48, October 5-8, 2022, Kyoto, Japan. (PG'22) BibTex    Definitive Version (Open Access, EG-DL)
	Fast and Faithful Scale-Aware Image Filters Shin Yoshizawa and Hideo Yokota: The Visual Computer, Vol. 37, No. 12, pp. 3051-3062, 2021. BibTex    Preprint    Definitive Version (Open Access)    ACM DL
	Trimmed Median PCA for Robust Plane Fitting Suguru Miyagawa, Shin Yoshizawa, and Hideo Yokota: IEEE International Conference on Image Processing, pp. 753-757, October 7-10, 2018, Athens, Greece. (IEEE ICIP'18) BibTex    Preprint    C++ code    IEEE Xplore
	Fast L1 Gauss Transforms for Edge-Aware Image Filtering Dina Bashkirova, Shin Yoshizawa, Rustam Latypov, and Hideo Yokota: Proceedings of the Institute for System Programming of the Russian Academy of Sciences (Proc. ISP RAS), Vol. 29, issue 4, pp. 55-72, 2017. BibTex    Definitive Version (Open Access)
	Seamless Image Cloning with Detail Restoration Shin Yoshizawa and Hideo Yokota: IPSJ Journal, Vol. 56, No. 6, pp. 1517-1527, 2015. BibTex    Definitive Version (Open Access, Japanese)    EG'13 Best Poster
	Fast L1 Gaussian Convolution via Domain Splitting Shin Yoshizawa and Hideo Yokota: IEEE International Conference on Image Processing, pp. 2908-2912, October 27-30, 2014, Paris, France. (IEEE ICIP'14) BibTex    Preprint    C++ code    IEEE Xplore
	Flower Modeling via X-ray Computed Tomography Takashi Ijiri, Shin Yoshizawa, Hideo Yokota, and Takeo Igarashi: ACM SIGGRAPH, August 10-14, 2014, Vancouver, Canada, (SIGGRAPH'14) ACM Transactions on Graphics, Vol. 33, No. 4, pp. 48:1-48-10, 2014. BibTex    Preprint    Definitive Version (ACM DL)    T. Ijiri's Software, Flower CTs, and Models.
	Möbius-invariant surface energies and ridges Shin Yoshizawa and Alexander G. Belyaev: The Mathematics of Surfaces XIV, pp. 109-125, September 11-13, 2013, Birmingham, UK. (IMA MoS'13) BibTex    Preprint    PPT slides
	Bilateral Hermite Radial Basis Functions for Contour-based Volume Segmentation Takashi Ijiri, Shin Yoshizawa, Yu Sato, Masaaki Ito, and Hideo Yokota: EUROGRAPHICS, May 6-10, 2013, Girona, Spain. (EG'13) Computer Graphics Forum, Vol. 32, Issue 2, pp. 123-132, 2013. BibTex    Preprint    PPT slides    Definitive Version    T. Ijiri's Software
	Shape and Image Interrogation with Curvature Extremalities Shin Yoshizawa, Alexander G. Belyaev, and Hideo Yokota: Journal for Geometry and Graphics, Vol. 16, No. 1, pp. 81-95, 2012. BibTex    Preprint    Definitive Version
	Interactive Registration of Intracellular Volumes with Radial Basis Functions Shin Yoshizawa, Satoko Takemoto, Miwa Takahashi, Makoto Muroi, Sayaka Kazami, Hiromi Miyoshi, and Hideo Yokota: International Journal of Computational Intelligence and Applications, Vol. 9, Issue 3, pp. 207-224, 2010. BibTex    Preprint    Definitive Version
	Fast Gauss Bilateral Filtering Shin Yoshizawa, Alexander G. Belyaev, and Hideo Yokota: Computer Graphics Forum, Vol. 29, No. 1, pp. 60-74, 2010. BibTex    Preprint    C++ code    Definitive Version
	Fast, Robust, and Faithful Methods for Detecting Crest Lines on Meshes Shin Yoshizawa, Alexander G. Belyaev, Hideo Yokota, and Hans-Peter Seidel: Computer Aided Geometric Design (CAGD), Vol. 25, Issue 8, pp. 545-560, 2008. BibTex    Preprint    Definitive Version    ACM DL
	Fast and Faithful Geometric Algorithm for Detecting Crest Lines on Meshes Shin Yoshizawa, Alexander G. Belyaev, Hideo Yokota, and Hans-Peter Seidel: Pacific Graphics, pp. 231-237, October 29-November 2, 2007, Maui, Hawaii. (PG'07) BibTex    Preprint    PPT slides    IEEE Xplore    ACM DL
	Skeleton-based variational mesh deformations Shin Yoshizawa, Alexander G. Belyaev, and Hans-Peter Seidel: EUROGRAPHICS, September 3-7, 2007, Prague, Czech. (EG'07) Computer Graphics Forum, Vol. 26, No. 3, pp. 255-264. BibTex    Preprint    PPT slides    Definitive Version
	Smoothing by Example: Mesh Denoising by Averaging with Similarity-Based Weights Shin Yoshizawa, Alexander G. Belyaev, and Hans-Peter Seidel: IEEE International Conference on Shape Modeling and Applications, pp. 38-44, June 14-16, 2006, Matsushima, Japan. (IEEE SMI'06) BibTex    Preprint    C++ code & Java Viewer    PPT slides    IEEE Xplore    ACM DL
	Towards Stable and Salient Multi-View Representation of 3D Shapes Hitoshi Yamauchi, Waqar Saleem, Shin Yoshizawa, Zachi Karni, Alexander G. Belyaev, and Hans-Peter Seidel: IEEE International Conference on Shape Modeling and Applications, pp. 265-270, Short Paper, June 14-16, 2006, Matsushima, Japan. (IEEE SMI'06) BibTex    Preprint    Slides    IEEE Xplore    ACM DL
	Fast and Robust Detection of Crest Lines on Meshes Shin Yoshizawa, Alexander G. Belyaev, and Hans-Peter Seidel: ACM Symposium on Solid and Physical Modeling, pp. 227-232, Technical Sketch, June 13-15, 2005, MIT, Cambridge, MA. (ACM SPM'05) BibTex    Preprint    C++ code & Java Viewer    PPT slides (extended)    Definitive Version (ACM DL)
	A fast and simple stretch-minimizing mesh parameterization Shin Yoshizawa, Alexander G. Belyaev, and Hans-Peter Seidel: International Conference on Shape Modeling and Applications, pp. 200-208, Jun 7-11, 2004, Genova, Italy. (SMI'04) BibTex    Preprint    C++ code    PPT slides    PDF    IEEE Xplore    ACM DL
	Free-form Skeleton-driven Mesh Deformations Shin Yoshizawa, Alexander G. Belyaev, and Hans-Peter Seidel: ACM Symposium on Solid Modeling and Applications, pp. 247-253, June 16-20, 2003, University of Washington, Seattle. (ACM SMA'03) BibTex    Preprint    C++ code to extract the Voronoi-based skeletal mesh.    PPT slides    Definitive Version (ACM DL)
	A Simple Approach to Interactive Free-Form Shape Deformations Shin Yoshizawa, Alexander G. Belyaev, and Hans-Peter Seidel: Pacific Graphics, pp. 471-474, Poster Paper, October 9-11, 2002, Beijing, China. (PG'02) BibTex    Preprint    Free-Form Shape Deformator (with Source Code)    Poster PDF    IEEE Xplore    ACM DL
	Fair Triangle Mesh Generation with Discrete Elastica Shin Yoshizawa and Alexander G. Belyaev: Geometric Modeling and Processing, pp. 119-123, July 10-12, 2002, RIKEN, Saitama, Japan. (GMP'02) BibTex    Preprint    PDF    IEEE Xplore    ACM DL
	On Evolute Cusps and Skeleton Bifurcations Alexander G. Belyaev and Shin Yoshizawa: International Conference on Shape Modeling and Applications, pp. 134-141, May 7-11, 2001, Genova, Italy. (SMI'01) BibTex    Preprint    IEEE Xplore    ACM DL
	Visualization and Study of Dynamic 2D Shapes via Curvature Shin Yoshizawa and Alexander G. Belyaev: International Conference on Multimedia Modeling, pp. 469-489, November 13-15, 2000, Nagano, Japan. (MMM2000) BibTex    Preprint    Definitive Version    Dynamic Curve Simulator
	Nonlinear spline generation with curve evolutions driven by curvature Alexander G. Belyaev, Elena V. Anoshkina, and Shin Yoshizawa: International Conference on Shape Modeling and Applications, pp. 146-153, March 1-4, 1999, Aizu-Wakamatsu, Japan. (SMI'99) BibTex    Preprint    IEEE Xplore    ACM DL

• Complete Publication List

Thesis

	Computational Differential Geometry Tools for Surface Interrogation, Fairing, and Design Shin Yoshizawa: 2006, PhD Thesis: A thesis submitted in the satisfaction for the degree of Doktors der Ingenieurwissenschaften (Dr.-Ing.) of the Saarland University, Germany. BibTex    PDF    IMPRS    Saarland University
	Shape Modeling with Dynamic Meshes Shin Yoshizawa: 2001, Master Thesis: A thesis submitted in partial satisfaction of the requirements for the degree of Master of Computer Science and Engineering in the Graduate School of the University of Aizu, Japan. BibTex    Postscript
	Nonlinear Spline Modeling with Curvature-Driven Curve Deformations Shin Yoshizawa: 1999, Senior Thesis: A thesis submitted in partial satisfaction of the requirements for the degree of Bachelor of Computer Science and Engineering in the University of Aizu, Japan. BibTex    Postscript

Selected Talks

• Fast and Faithful Scale-Aware Image Filters
• Shin Yoshizawa and Hideo Yokota
• Workshop in Homage to Professor T. L. Kunii, Computer Graphics International (CGI'21), Slides, Video (YouTube), Invited, September 6-10, 2021, Online.
• Edge-aware Image Filters via Domain Splitting L1 Gaussian Convolutions
• Shin Yoshizawa
• International Congress on Industrial and Applied Mathematics (ICIAM), Invited Minisymposia Talk, July 15-19, 2019, Valencia, Spain.
• Fast Image Filtering with L1 Gauss Transform
• Dina Bashkirova, Shin Yoshizawa, and Hideo Yokota
• Poster Presentation at International Computer Vision Summer School (ICVSS), in Poster Booklet pp. 4, July 9-15, 2017, Sicily, Italy. (Selected AR: 34.9%).
• Shape Aesthetics and Features via Möbius Invariants
• Shin Yoshizawa
• Seminar, Invited Talk, Institute of Perception, Action and Behaviour, Edinburgh University, September 3, 2013, Edinburgh, Scotland, UK.
• Poisson Image Analogy: Texture-Aware Seamless Cloning
• Shin Yoshizawa and Hideo Yokota
• Poster Presentation at EUROGRAPHICS, in Poster Proc. pp. 5-6, May 6-10, 2013, University of Girona, Girona, Spain (Refereed).
• BibTex    Preprint    Definitive Version (Open Access, EG-DL)
• Best Poster Award: Springer Prize for the Best Eurographics Poster 2013.
• Tracking Melanosomes via Particle Filter with Lloyd Partitioning
• S. Yoshizawa, T. Fujiwara, M. Fukuda, and H. Yokota
• Poster Presentation at International Conference on Systems Biology (ICSB2011), in Abstract Book, pp. 212 (PS 383), August 28-September 1, 2011, Mannheim, Germany.
• Feature-Preserving Filters for Biomedical Image Denoising and Clustering
• Shin Yoshizawa, Alexander Belyaev, and Hideo Yokota
• Poster Presentation at International Conference on Systems Biology (ICSB2010), in Abstract Book, page 189, October 10-14, 2010, Edinburgh, UK. (Evaluated).
• Curvature-based Multidimensional Image Creases
• Shin Yoshizawa, Alexander Belyaev, and Hideo Yokota
• Seminar, Invited Talk, Institute of Perception, Action and Behaviour, Edinburgh University, October 13, 2010, Edinburgh, Scotland, UK.
• A Novel Approach for Fast and Accurate Bilateral Filtering
• Shin Yoshizawa, Alexander Belyaev, and Hideo Yokota
• CG Lunch, Invited Talk, Max-Planck-Institut fuer Informatik, October 29, 2009, Saarbruecken, Germany.
• On surface ridges and their use for shape analysis
• Shin Yoshizawa, Alexander Belyaev, Hideo Yokota, and Hans-Peter Seide
• Seminar, Invited Talk, Institute of Perception, Action and Behaviour, Edinburgh University, October 22, 2009, Edinburgh, Scotland, UK.
• Volume Processing for Cell Biology
• Shin Yoshizawa and Hideo Yokota
• Seminar, Invited Talk, Durham University, October 30, 2008, Durham, England, UK.
• Image & Geometry Processing for Cell Biology
• Shin Yoshizawa and Hideo Yokota
• Signal and Image Processing Joint Seminar, Edinburgh Research Partnership in Engineering and Mathematics, Invited Talk, October 29, 2008, Heriot-Watt University, Edinburgh, Scotland, UK.
• Skeleton-driven Laplacian Mesh Deformations
• Shin Yoshizawa, Alexander G. Belyaev, and Hans-Peter Seidel
• Poster Presentation at EUROGRAPHICS Symposium on Geometry Processing (SGP'06), in Poster Proceedings page 11, June 26-28, 2006, Sardinia, Italy. (Refereed).
• Skeleton-driven Mesh Deformations
• Shin Yoshizawa, Alexander G. Belyaev, and Hans-Peter Seidel
• AIM@SHAPE Summer School on Interactive Shape Modeling, July 8-12, 2005, Darmstadt, Germany.
• Fast and accurate detection of ridges and ravines on surfaces approximated by dense triangle meshes
• Shin Yoshizawa, Alexander G. Belyaev, and Hans-Peter Seidel
• International Conference on Mathematical Methods for Curves and Surfaces, in Abstract Proceedings page 70, July 1-6, 2004, Tromso, Norway. (Refereed)
• Skeleton-based Shape Deformations
• Shin Yoshizawa, Alexander G. Belyaev, and Hans-Peter Seidel
• Highgraphics 2003, February 24-28, Oberjoch, Germany.
• On Variational and Free-Form Shape Modeling
• Shin Yoshizawa
• The Japan Society for Precision Engineering: Mega Polygon Study Group, Invited Talk, January 25, 2002, University of Tokyo, Japan.
• AG4 Group Meeting, April 30, 2002, Max-Planck-Institut fuer Informatik, Saarbruecken, Germany.
• Tools for Shape Modeling with Dynamic Meshes
• Shin Yoshizawa
• International Workshop on Geometric Modeling, Computing, and Visualization, October 19-22, 2001, University of Aizu, Japan.
• A Simple Approach to Interactive Free-Form Shape Deformations
  • Shin Yoshizawa
  • International Workshop on Geometric Modeling, Computing, and Visualization, October 19-22, 2001, University of Aizu, Japan.
• Nonlinear Spline Modeling with Curvature-Driven Deformations
• Shin Yoshizawa
• Workshop on Singularity Theory and its Applications, October 26-30, 1998, University of Aizu, Japan.

• Complete Talk List

Current Research Interests

• Extraction & Analysis of Geometric-Features: Curvature, Ridges, Crest Lines, and Skeleton (Medial Axis)
• Fast Filtering and Convolution Algorithms
• Geometric Median, Robust PCA
• Seamless Image Cloning
• Curve, Surface, and Volume Flows
• Variational and Free-Form Shape Modeling
• Image and Geometry Processing for Cell Biology

Education, Fellowships, and Professional Experience

• April 2013 - present:
  Senior Scientist at Image Processing Research Team, Center for Advanced Photonics, RIKEN, Japan.
  • 2019-2024: Visiting Professor at Tokyo University of Agriculture and Technology: Graduate School of Engineering.
  • 2017-2021: Voxel Engineering Laboratory, RIKEN.
  • 2014-2018: Cloud-Based Eye Disease Diagnosis Joint Research Team, RIKEN.
  • 2014-2024: Investigator at National Institute of Science and Technology Policy, MEXT, Japan.
  • Visiting Scholar at Heriot-Watt University (2013 Aug.-Sep.), UK.
  • 2019 IEICE ISS Distinguished Service Award, 2016 RAP Symposium Best Poster Award, 2014 IEEE ICIP Top 10% Paper Award, 2013 IPSJ GCAD Award, 2013 Springer Prize for the Best Eurographics Poster.
  
  
  
• April 2011 - March 2013:
  ASI Research Scientist at Bio-research Infrastructure Construction Team, Advanced Technology Support Division, Advanced Science Institute, RIKEN, Japan.
  • 2012-2016: Measurement Information Laboratory, RIKEN.
  • Aug. 2011-2018: Visiting Associate Professor at Tokyo University of Agriculture and Technology: Graduate School of Engineering.
  • 2011-2015: Adjunct Lecturer at Otsuma Women's University: Image Processing I and II.
  • 2011: Adjunct Lecturer at Kyusyu University: Graduate School of Systems Life Sciences Special Lecture.
  • 2011: Contract Researcher, 2012-: ASI Research Scientist, 2013-: Deputy Team Head, RIKEN.
  
  
• January 2007 - March 2011:
  Researcher at Bio-research Infrastructure Construction Team, VCAD System Research Program, RIKEN, Japan.
  • Visiting Scholar at Heriot-Watt University (2008 October, 2009 October, 2010 October), UK.
  • 2009, 2011: Advisory Committee of Innovative Areas in Grants-in-Aid for Scientific Research (Intracellular Logistics), Japan.
  • 2011 RIKEN Research Incentive Award, 2010 IEICE MI Award, 2009 JSPE Autumn Conference Best Presentation Award.
  
  
• April 2002 - December 2006:
  Ph.D Fellowship/Research Scientist at Computer Graphics Department, Max-Planck-Institut für Informatik, Germany.
  • December 18: Doktor der Ingenieurwissenschaften (Dr.-Ing.)
    • University of Saarland: Naturwissenschaftlich-Technische Fakultät I (Mathematik and Informatik)
  • PhD Thesis: Computational Differential Geometry Tools for Surface Interrogation, Fairing, and Design
  
  
• April 2001 - March 2002:
  Ph.D student in Computer Science at University of Aizu: Shape Modeling Laboratory, Japan.
  • Research Assistant at University of Aizu: WWW Medium for e-Learning 3D Geometric Ideas and Algorithms (April 2001-March 2002).
  • Teaching Assistant at University of Aizu: Image Processing (2001).
  • Student Cooperative Class Project Assistant at University of Aizu: Computational Geometry and Topology with Java (2001).
  
  
• April 1999 - March 2001:
  Graduate student in Computer Science at University of Aizu: Graduate Department of Information Systems, Japan.
  • March 2001: Representative of the Master Students Award
  • March 2001: Master Degree in Computer Science and Engineering
  • Thesis Title: Shape Modeling with Dynamic Meshes
  • Teaching Assistant at University of Aizu: Applied Geometry and Topology (1999, 2000), Introduction to Topology (1999, 2000), Numerical Analysis (1999, 2000), Image Processing (1999, 2000), Computational Geometry (1999, 2000), Discrete Mathematics (1999, 2000).
  
  
• April 1995 - March 1999:
  Undergraduate student in Computer Science at University of Aizu: Department of Computer Software, Japan.
  • March 1999: Bachelor Degree in Computer Science and Engineering
  • Thesis Title: Nonlinear Spline Modeling with Curvature-Driven Curve Deformations
  
  

Fellowships:

• April 2005 - December 2006: Financial Support from AIM@SHAPE, a Network of Excellence project within EU's [Sixth Framework Programme], European Union.
• April 2002 - December 2006: Ph.D Fellowship, International Max-Planck Research School for Computer Science, Germany.

Academic Activities:

• 2021-2024: JSPE Conferences, Session Organizer.
• 2016: Pacific Graphics, Program Committee.
• 2016-2018, 2020: International Conference on Advanced Concepts for Intelligent Vision Systems, Program Committee.
• 2016: The 1st Conference on Resonance Biology for Innovative Bioimaging, Executive Committee.
• 2015, 2018: Asian Conference on Design and Digital Engineering, Program Committee.
• 2014: ACM Virtual Reality Software Technology, Program Committee.
• 2014-2015: VC/GCAD Symposium, Program Committee.
• 2014-2016: Steel Informatics Committee, ISIJ.
• 2013/5-2017/5: Associate Editor of IEICE Trans. on Information and Systems.
• 2013: International Workshop on BioImage Recognition, Program Committe.
• 2011-2013: Editorial Committee of Journal of the JSPE.
• 2011: The 23th Bioengineering Conference, Annual Meeting of BE D/JSME, Session Organizer.
• 2010: MIRU 2010 Workshop on Intracellular Image Processing, Executive Committee.
• 2010-2012, 2016-2024: Visual Inspection Algorithm Contest, JSPE, Executive Committee.
• 2009, 2011: Advisory Committee of Innovative Areas in Grants-in-Aid for Scientific Research (Intracellular Logistics), Ministry of Education, Culture, Sports, Science and Technology-Japan.
• 2009: The 1st Conference on Intracellular Logistics, Organizing Committee
• 2008: ACM Solid and Physical Modeling, Program Committee.
• Member of Association for Computing Machinery (ACM, 2001-present), Japan Society for Precision Engineering (JSPE, 2009-present), Information Processing Society of Japan (IPSJ,2010-present).
• Reviewer Experiences:
  • ACM (TOG, TOMS), CAGD, IEEE (TPAMI, TVCG, TIP, TNNLS), CGF, CAD, The Visual Computer, Graphical Models, Pattern Recognition Letters, JCST, IJCIA, JSS, IEICE, JSAC, JSME, IJAT, IIEEJ, and Nature.
  • EG('04 (SP), '06, '07(STAR), '09-'14), SIGGRAPH Asia'10, PG('05, '11-'12, '14, and '16), ACM/EG SGP'04, IEEE SMI('05 and '06), ACM SCA'04, GMP'08, GI'10, CGI('06 and '10), WSCG('11-'15, and '17-'24), ISVC'06, CAD&G'13, Acivs('16-'18, '20), ICCG'16, ACDDE('12 and '15), ICPE'14, VC/GCAD('07-'11 and '13-'14), IEVC'17, and FIT'11.

Grants:

• 2018-2022: SIP, Materials Integration II (Co-I), Japan.
• 2016-2018: Grants-in-Aid for Scientific Research, Challenging Exploratory Research, Japan.
• 2015-2019: Grants-in-Aid for Scientific Research, Innovative Areas (Co-I), Japan.
• 2015-2018: SIP, Materials Integration (Co-I), Japan.
• 2012-2013: Grants-in-Aid for Scientific Research, Young Researcher Category B, Japan.
• 2008-2012: Grants-in-Aid for Scientific Research, Innovative Areas (Co-I), Japan.
• 2008-2009: Grants-in-Aid for Scientific Research, Young Researcher Category B, Japan.