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In Press

Fast Algorithms for Minimum Homology Basis
Amritendu Dhar, Vijay Natarajan, and Abhishek Rathod.
Discrete and Computational Geometry, 2024, In Press.
[PDF]

2024

A Ridge-based Approach for Extraction and Visualization of 3D Atmospheric Fronts
Anne Gossing, Andreas Beckert, Christoph Fischer, Nicolas Klenert, Vijay Natarajan, George Pacey, Thorwin Vogt, Marc Rautenhaus, and Daniel Baum.
IEEE VIS, 2024, 176–180.
Best Paper Honorable Mention
[PDF]
Time-varying Extremum Graphs
Somenath Das, Raghavendra Sridharamurthy, and Vijay Natarajan.
Computer Graphics Forum, 43(6), 2024, e15162.
[Wiley Online Library link]
[PDF]
Geometric Localization of Homology Cycles
Amritendu Dhar, Vijay Natarajan and Abhishek Rathod.
CCCG 2024: Proc. 36th Canadian Conference on Computational Geometry, 2024, 237-244.
[PDF]
Jacobi Set Simplification for Tracking Topological Features in Time-Varying Scalar Fields
Dhruv Meduri, Mohit Sharma and Vijay Natarajan.
The Visual Computer, 40, 2024, 4843-4855.
[PDF]
Advection-Based Tracking and Analysis of Salinity Movement in the Indian Ocean
Upkar Singh, P. N. Vinayachandran, and Vijay Natarajan.
Computers & Geosciences, 182, 2024, 105493:1–10.
[Elsevier link]
[PDF]
Continuous Scatterplot Operators for Bivariate Analysis and Study of Electronic Transitions
Mohit Sharma, Talha Bin Masood, Signe S. Thygesen, Mathieu Linares, Ingrid Hotz and Vijay Natarajan.
IEEE Transactions on Visualization and Computer Graphics, 30(7), 2024, 3532-3544.
[Replicability Stamp]
[PDF]

2023

pyParaOcean: A System for Visual Analysis of Ocean Data
Toshit Jain, Varun Singh, Vijay Kumar Boda, Upkar Singh, Ingrid Hotz, P. N. Vinayachandran, and Vijay Natarajan.
EnvirVis 2023: Proc. Workshop on Visualization in Environmental Sciences, 2023, 1-8.
[PDF]
TACHYON: Efficient shared memory parallel computation of extremum graphs
Abhijath Ande, Varshini Subhash, and Vijay Natarajan.
Computer Graphics Forum, 42(6), 2023, e14784.
[Wiley Online Library link]
[Replicability Stamp]
[PDF]
A GPU Parallel Algorithm for Computing Morse-Smale Complexes
Varshini Subhash, Karran Pandey and Vijay Natarajan.
IEEE Transactions on Visualization and Computer Graphics, 29 (9), 2023, 3873-3887.
[PDF]
Comparative Analysis of Merge Trees using Local Tree Edit Distance
Raghavendra Sridharamurthy and Vijay Natarajan.
IEEE Transactions on Visualization and Computer Graphics, 29(2), 2023, 1518-1530.
[PDF]

2022

Jacobi Set Driven Search for Flexible Fiber Surface Extraction
Mohit Sharma and Vijay Natarajan.
TopoInVis 2022: Proc. IEEE Workshop on Topological Data Analysis and Visualization, 2022, 49-58.
[PDF]
Level of Detail Exploration of Electronic Transition Ensembles using Hierarchical Clustering
Signe Sidwall Thygesen, Talha Bin Masood, Mathieu Linares, Vijay Natarajan and Ingrid Hotz.
Computer Graphics Forum (EuroVis 2022), 41(3), 2022, 333-344.

[PDF]
Front and Skeleton Features Based Methods for Tracking Salinity Propagation in the Ocean
Upkar Singh, T.M. Dhipu, P. N. Vinayachandran and Vijay Natarajan.
Computers & Geosciences, 159, 2022, 104993:1-9.
[Elsevier link]
[PDF]
Morse theory-based segmentation and fabric quantification of granular materials
Karran Pandey, Talha Bin Masood, Saurabh Singh, Ingrid Hotz, Vijay Natarajan, and Tejas G. Murthy.
Granular Matter, 24(1), 2022, 27:1-20.
[Springer link]
[PDF]

2021

Segmentation Driven Peeling for Visual Analysis of Electronic Transitions
Mohit Sharma, Talha Bin Masood, Signe S. Thygesen, Mathieu Linares, Ingrid Hotz and Vijay Natarajan.
IEEE VIS 2021, 96-100.
[PDF]
Scalar Field Comparison with Topological Descriptors: Properties and Applications for Scientific Visualization
Lin Yan, Talha Bin Masood, Raghavendra Sridharamurthy, Farhan Rasheed, Vijay Natarajan, Ingrid Hotz and Bei Wang.
Computer Graphics Forum (EuroVis STAR 2021), 40(3), 2021, 599–633
[PDF]
Visual Analysis of Electronic Densities and Transitions in Molecules
Talha Bin Masood, Signe Sidwall Thygesen, Mathieu Linares, Alexei I. Abrikosov, Vijay Natarajan, and Ingrid Hotz.
Computer Graphics Forum (EuroVis 2021), 40(3), 2021, 287–298
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Mergemaps: treemaps for scientific data
Adhitya Kamakshidasan and Vijay Natarajan.
Topological Methods in Visualization VI: Theory, Software and Applications. Ingrid Hotz, Talha Bin Masood, Filip Sadlo, and Julein Tierny (Eds.) Springer-Verlag, Mathematics and Visualization Series, 2021, 19–38
[PDF]
Topological feature search in time-varying multifield data
Tripti Agarwal, Amit Chattopadhyay, and Vijay Natarajan.
Topological Methods in Visualization VI: Theory, Software and Applications. Ingrid Hotz, Talha Bin Masood, Filip Sadlo, and Julein Tierny (Eds.) Springer-Verlag, Mathematics and Visualization Series, 2021, 197–217
[PDF]

2020

GPU Parallel Computation of Morse-Smale Complexes
Varshini Subhash, Karran Pandey, Vijay Natarajan.
IEEE VIS 2020, 2020, 36-40
[PDF]
An Integrated Geometric and Topological Approach for the Identification and Visual Analysis of Rossby Wave Packets
Karran Pandey, Joy Merwin Monteiro and Vijay Natarajan.
Monthly Weather Review, 2020, 148 (8): 3139-3155.
[PDF]
Adaptive and Efficient Transfer for Online Remote Visualization of Critical Weather Applications
Preeti Malakar, Vijay Natarajan and Sathish S. Vadhiyar.
International Conference on Computational Science, 2020, 674-693 .
[PDF]
Parallel Computation of Alpha Complexes for Biomolecules
Talha Bin Masood, Tathagata Ray and Vijay Natarajan.
Computational Geometry : Theory and Applications, 90, 2020, 1 - 17.
[Elsevier link]
SoCG 2020: Symposium on Computational Geometry 2020, 17:1 - 17:16.

[PDF]
Edit distance between merge trees.
Raghavendra Sridharamurthy, Talha Bin Masood, Adhitya Kamakshidasan and Vijay Natarajan.
IEEE Transactions on Visualization and Computer Graphics, 26(3), 2020, 1518-1531.
[PDF]

2019

An exploratory framework for cyclone identification and tracking.
Akash Anil Valsangkar, Joy Merwin Monteiro, Vidya Narayanan, Ingrid Hotz and Vijay Natarajan.
IEEE Transactions on Visualization and Computer Graphics, 25(3), 2019, 1460-1473.
[PDF]

2018

On-Demand Augmentation of Contour Trees
Mohit Sharma and Vijay Natarajan.
ICVGIP 2018: 31:1-31:8
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2017

Edit distances for comparing merge trees.
Raghavendra Sridharamurthy, Adhitya Kamakshidasan and Vijay Natarajan.
IEEE VIS, Poster, 2017.
Best Poster Award
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Computing contour trees for 2D piecewise polynomial functions.
Girijanandan Nucha, Georges-Pierre Bonneau, Stefanie Hahmann and Vijay Natarajan.
Computer Graphics Forum (EuroVis 2017), 36(3), 2017, 23-33.
[PDF]
Efficient software for programmable visual analysis using Morse-Smale complexes.
Nithin Shivashankar and Vijay Natarajan.
In Topological Methods in Data Analysis and Visualization IV.
Hamish Carr, Christoph Garth, and Tino Weinkauf (Eds.)
Springer-Verlag, Mathematics and Visualization Series, 2017, 317-331.
[PDF]
Approximation algorithms for Max Morse matching.
Abhishek Rathod, Talha Bin Masood and Vijay Natarajan.
Computational Geometry: Theory and Applications, 61, 2017, 1-23.
[Elsevier link]
[PDF]

2016

Extraction of robust voids and pockets in proteins.
Raghavendra Sridharamurthy, Talha Bin Masood, Harish Doraiswamy, Siddharth Patel, Raghavan Varadarajan and Vijay Natarajan.
In Visualization in Medicine and Life Sciences III.
Lars Linsen, Hans-Christian Hege, and Bernd Hamann (Eds.)
Springer-Verlag, Mathematics and Visualization Series, 2016, 329-349.
Cover Image
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An integrated geometric and topological approach to connecting cavities in biomolecules.
Talha Bin Masood and Vijay Natarajan.
PacificVis 2016: Proc. IEEE Pacific Visualization Symposium, 2016, 104-111.
[PDF]
MS3ALIGN: an efficient molecular surface aligner using the topology of surface curvature.
Nithin Shivashankar, Sonali Patil, Amrisha Bhosle, Nagasuma Chandra and Vijay Natarajan.
BMC Bioinformatics, 2016, 17:26.
[PDF]
Felix: A topology based framework for visual exploration of cosmic filaments.
Nithin Shivashankar, Pratyush Pranav, Vijay Natarajan, Rien van de Weygaert, E. G. Patrick Bos, and Steven Rieder.
IEEE Transactions on Visualization and Graphics, 22(6), 2016, 1745-1759.
[PDF]

2015

Clustering moment invariants to identify similarity within 2D flow fields.
Roxana Bujack, Jens Kasten, Vijay Natarajan, Gerik Scheuermann and Kenneth I. Joy.
EuroVis 2015: EG/VGTC Conference on Visualization (Short Paper), 2015, 31-35.
[PDF]
ChExVis: a tool for molecular channel extraction and visualization.
Talha Bin Masood, Sankaran Sandhya, Nagasuma Chandra and Vijay Natarajan.
BMC Bioinformatics, 2015, 16:119.
[PDF]
Distance between extremum graphs.
Vidya Narayanan, Dilip Mathew Thomas and Vijay Natarajan.
PacificVis 2015: Proc. IEEE Pacific Visualization Symposium, 2015, 263-270.
[PDF]
A parallel and memory efficient algorithm for constructing the contour tree.
Aditya Acharya and Vijay Natarajan.
PacificVis 2015: Proc. IEEE Pacific Visualization Symposium, 2015, 271-278.
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2014

Facet-JFA: Faster computation of discrete Voronoi diagrams.
Talha Bin Masood, Hari Krishna Malladi and Vijay Natarajan.
ICVGIP 2014: Proc. Indian Conference on Computer Vision, Graphics and Image Processing, 2014, 20:1-20:8.
[PDF]
An interactive framework for reconstructing 3D neuronal structures.
Kanuj Kumar, Vijay Natarajan, S. K. Sikdar and Kalyan V. Srinivas.
ICVGIP 2014: Proc. Indian Conference on Computer Vision, Graphics and Image Processing, 2014, 19:1-19:8.
[PDF]
Multiscale symmetry detection in scalar fields by clustering contours.
Dilip Mathew Thomas and Vijay Natarajan.
IEEE Transactions on Visualization and Computer Graphics (IEEE SciVis 2014), 20 (12), 2014, 2427-2436.
[PDF]

2013

Efficient homology computations on multicore and manycore systems.
N. Anurag Murty, Vijay Natarajan and Sathish Vadhiyar.
HiPC 2013: Proc. Intl. Conf. High Performance Computing, 2013.
[PDF]
Detecting symmetry in scalar fields using augmented extremum graphs.
Dilip Mathew Thomas and Vijay Natarajan.
IEEE Transactions on Visualization and Computer Graphics (IEEE SciVis 2013), 19 (12), 2013, 2663-2672.
[PDF]
An exploration framework to identify and track movement of cloud systems.
Harish Doraiswamy, Vijay Natarajan and Ravi S. Nanjundiah.
IEEE Transactions on Visualization and Computer Graphics (IEEE SciVis 2013), 19 (12), 2013, 2896-2905.
[PDF]
A diffusion-based processor reallocation strategy for tracking multiple dynamically varying weather phenomena.
Preeti Malakar, Vijay Natarajan, Sathish S. Vadhiyar and Ravi S. Nanjundiah.
ICPP 2013: Proc. Intl. Conf. Parallel Processing, 2013, 50-59.
[PDF]
Topological saliency.
Harish Doraiswamy, Nithin Shivashankar, Vijay Natarajan and Yusu Wang.
Computers & Graphics, 37 (7), 2013, 787-799.
[Elsevier link]
[PDF]
Extraction of robust voids and pockets in proteins.
Raghavendra Sridharamurthy, Harish Doraiswamy, Siddharth Patel, Raghavan Varadarajan and Vijay Natarajan.
EuroVis 2013: EG/VGTC Conference on Visualization (Short Paper), 2013.
[PDF]
Scalar field visualization via extraction of symmetric structures.
Talha Bin Masood, Dilip Mathew Thomas and Vijay Natarajan.
The Visual Computer (CGI 2013), 29(6), 2013, 761-771.
[Springer link]
[PDF]
Computing Reeb graphs as a union of contour trees.
Harish Doraiswamy and Vijay Natarajan.
IEEE Transactions on Visualization and Computer Graphics, 19 (2), 2013, 249-262.
[PDF]

2012

Improved quadric surface impostors for large bio-molecular visualization.
Pranav D. Bagur, Nithin Shivashankar, and Vijay Natarajan.
ICVGIP 2012: Proc. Indian Conference on Computer Vision, Graphics and Image Processing, 2012, 33:1-33:8.
[PDF]
Parallel computation of 3D Morse-Smale complexes.
Nithin Shivashankar and Vijay Natarajan.
Computer Graphics Forum (EuroVis 2012), 31(3), 2012, 965-974.
[PDF]
Integrated parallelization of computation and visualization for large-scale weather applications.
Preeti Malakar.
Dissertation Research Showcase, SC 2012.
[PDF]
A hybrid parallel algorithm for computing and tracking level set topology.
Senthilnathan Maadasamy, Harish Doraiswamy and Vijay Natarajan.
HiPC'12: Proc. Intl. Conf. High Performance Computing, 2012, 1-10.
[PDF]
A divide and conquer strategy for scaling weather simulations with multiple regions of interest.
Preeti Malakar, Thomas George, Sameer Kumar, Rashmi Mittal, Vijay Natarajan, Yogish Sabharwal, Vaibhav Saxena and Sathish S. Vadhiyar.
SC 2012: Proc. IEEE/ACM Supercomputing, 2012, 37.1-37.11.
[PDF]
Mesh simplification based on edge collapsing could improve computational efficiency in near infrared optical tomographic imaging.
Dilip Mathew Thomas, Phaneendra K. Yalavarthy, Deepak Karkala, and Vijay Natarajan.
IEEE Journal of Selected Topics in Quantum Electronics (issue on biophotonics), 18(4), 2012, 1493-1501.
[PDF]
Parallel computation of 2D Morse-Smale complexes.
Nithin Shivashankar, Senthilnathan M and Vijay Natarajan.
IEEE Transactions on Visualization and Graphics, 18(10), 2012, 1757-1770.
[PDF]
Integrated parallelization of computations and visualization for large-scale applications.
Preeti Malakar, Vijay Natarajan and Sathish Vadhiyar.
IEEE International Parallel and Distributed Processing Symposium PhD Forum, Poster, 2012
[PDF]
Uncertainty visualization using HDR volume rendering.
Vijeth Dinesha, Neeharika Adabala, and Vijay Natarajan.
The Visual Computer, 28(3), 2012, 265-278.
[Springer link]
[PDF]
Output-sensitive construction of Reeb graphs.
Harish Doraiswamy and Vijay Natarajan.
IEEE Transactions on Visualization and Computer Graphics, 18(1), 2012, 146-159.
[PDF]

2011

Computing Reeb graphs as a union of contour trees.
Harish Doraiswamy and Vijay Natarajan.
IEEE Vis, Poster, 2011.
[PDF]
Symmetry in scalar field topology.
Dilip Mathew Thomas and Vijay Natarajan.
IEEE Transactions on Visualization and Computer Graphics (IEEE Vis 2011), 17(12), 2011, 2035-2044.
[PDF]
A gradient-based comparison measure for visual analysis of multifield data.
Suthambhara Nagaraj, Vijay Natarajan, and Ravi S. Nanjundiah.
Computer Graphics Forum (EuroVis 2011), 30(3), 2011, 1101-1110.
Third Best Paper Award
[PDF]
INST: An integrated steering framework for critical weather applications.
Preeti Malakar, Vijay Natarajan, and Sathish Vadhiyar.
ICCS 2011: Proc. International Conference on Computational Science, Procedia Computer Science, 4, 2011, 116-125.
[PDF]
Link conditions for simplifying meshes with embedded structures.
Dilip Mathew Thomas, Vijay Natarajan, and Georges-Pierre Bonneau.
IEEE Transactions on Visualization and Computer Graphics, 17(7), 2011, 2007-2019.
[PDF]
Relation-aware isosurface extraction in multi-field data.
Suthambhara N. and Vijay Natarajan.
IEEE Transactions on Visualization and Computer Graphics, 17(2), 2011, 182-191.
[PDF]
Simplification of Jacobi sets.
Suthambhara N. and Vijay Natarajan.
In Topological Data Analysis and Visualization: Theory, Algorithms and Applications., Valerio Pascucci, Xavier Tricoche, Hans Hagen, and Julien Tierny (editors), Springer-Verlag, Mathematics and Visualization Series, 2011, 91-102.
[PDF]

2010

Segmenting point-sampled surfaces.
Ichitaro Yamazaki, Vijay Natarajan, Zhaojun Bai, and Bernd Hamann.
The Visual Computer, 26(12), 2010, 1421-1433.
[Springer Link]
[PDF]
An adaptive framework for simulation and online remote visualization of critical climate applications in resource-constrained environments.
Preeti Malakar, Vijay Natarajan, and Sathish Vadhiyar.
SC 2010: Supercomputing Conference, New Orleans LA, Nov 2010.
[PDF]
Constructing Reeb graphs using cylinder maps.
Harish Doraiswamy, Aneesh Sood, and Vijay Natarajan.
SoCG 2010: ACM Symposium on Computational Geometry, Video / Multimedia track, 2010.
[PDF]
A coupled framework for parameter simulation and visualization.
Preeti Malakar, Vijay Natarajan, and Sathish S. Vadhiyar.
Poster at the Grace Hopper Celebration of Women in Computing in India, Bangalore, 2010
[PDF]
Uncertainty visualization using HDR images.
Vijeth Dinesha, Neeharika Adabala, and Vijay Natarajan.
Eurographics / IEEE-VGTC Symposium on Visualization, Poster, 2010.
[PDF]

2009

Topology-guided tessellation of quadratic elements.
Scott E. Dillard, Vijay Natarajan, Gunther H. Weber, Valerio Pascucci, and Bernd Hamann.
Invited paper in Intl. J. Computational Geometry and Applications, 19(2), 2009, 195-211.
[PDF]
An integrated simulation and visualization framework for tracking cyclone Aila.
Preeti Malakar, Vijay Natarajan, Sathish S. Vadhiyar, and Ravi S. Nanjundiah.
Student Research Symposium, HiPC, Kochi, India, December 2009.
TCPP Best Paper Award
[PDF]
Efficient algorithms for computing Reeb graphs.
Harish Doraiswamy and Vijay Natarajan.
Computational Geometry: Theory and Applications, 42, 2009, 606-616.
[Elsevier link]
[PDF]

2008

Reeb graphs.
Harish Doraiswamy and Vijay Natarajan.
Poster at Microsoft TechVista, Chennai, 2008
[PDF]
Efficient output-sensitive construction of Reeb graphs.
Harish Doraiswamy and Vijay Natarajan.
ISAAC 2008: Proc. Intl. Symp. Algorithms and Computation, LNCS 5369, Springer-Verlag, 2008, 557-568.
[SpringerLink]
[PDF]
Visibility volumes for interactive path optimization.
Manohar B. Srikanth, P.C. Mathias, Vijay Natarajan, Prakash Naidu, and Timothy Poston.
The Visual Computer (Computer Graphics International 2008), 23, 2008, 1-13.
[SpringerLink]
[PDF]

2007

Visual analysis of biomolecular surfaces.
Vijay Natarajan, Patrice Koehl, Yusu Wang, and Bernd Hamann.
In Mathematical Methods for Visualization in Medicine and Life Sciences.
L. Linsen, H. Hagen, and B. Hamann (editors),
Springer Verlag, Mathematics and Visualization Series, 2007, 237-255.
[PDF]
Efficient computation of Morse-Smale complexes for three-dimensional scalar functions.
Attila Gyulassy, Vijay Natarajan, Valerio Pascucci, and Bernd Hamann.
IEEE Transactions on Visualization and Computer Graphics (IEEE Vis 2007), 13(6), 2007, 1440-1447.
[PDF]
Topologically clean distance fields.
Attila Gyulassy, Mark Duchaineau, Vijay Natarajan, Valerio Pascucci, Eduardo Bringa, Andrew Higginbotham, and Bernd Hamann.
IEEE Transactions on Visualization and Computer Graphics (IEEE Vis 2007), 13(6), 2007, 1432-439.
[PDF]
Interactive processing and visualization of image data for biomedical and life science applications.
Oliver G. Staadt, Vijay Natarajan, Gunther H. Weber, David F. Wiley, and Bernd Hamann.
M. Auer, H. Peng and A. Singh (editors),
BMC Cell Biology (special issue), 8:S10, 2007.
[PDF]