Publications

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2009

Alim, U. R., and T. Moeller, "A Fast Fourier Transform with Rectangular Output on the BCC and FCC Lattices", Eighth International Conference on Sampling Theory and Applications (SampTA'09), Marseille, France, 05/2009.

preprint (738.5 KB)

slides (997.2 KB)

Finkbeiner, B., U. R. Alim, D. Van De Ville, and T. Möller, "High-Quality Volumetric Reconstruction on Optimal Lattices for Computed Tomography", Computer Graphics Forum (Proceedings of Eurographics/IEEE-VGTC Symposium on Visualization 2009 (EuroVis 2009)), vol. 28, issue 3, no. 3, pp. 1023--1030, 06/2009.

supplementary figures (345.35 KB)

Alim, U. R., A. Entezari, and T. Möller, "The Lattice-Boltzmann Method on Optimal Sampling Lattices", IEEE Transactions on Visualization and Computer Graphics, vol. 15, issue 4, no. 4, Los Alamitos, CA, USA, IEEE Computer Society, pp. 630-641, 07/2009.

preprint (6.3 MB)

smoke simulation videos (33.17 MB)

2010

Alim, U. R., T. Möller, and L. Condat, "Gradient Estimation Revitalized", IEEE Transactions on Visualization and Computer Graphics (Proceedings Visualization / Information Visualization 2010), vol. 16, issue 6, no. 6, pp. 1494-1503, 11/2010.

preprint (17.78 MB)

MATLAB filtering code (5.07 MB)

slides from VisWeek 2010 (3.54 MB)

2011

Hossain, Z., U. R. Alim, and T. Möller, "Toward High Quality Gradient Estimation on Regular Lattices", IEEE Transactions on Visualization and Computer Graphics, vol. 17, issue 4, no. 4, Los Alamitos, CA, USA, IEEE Computer Society, pp. 426-439, 04/2011.

preprint (12.98 MB)

derivation of filter weights (484.64 KB)

slides from VisWeek 2011 (32.08 MB)

2012

Alim, U. R., "Data Processing on the Body-Centered Cubic Lattice", School of Computing Science, vol. PhD, Burnaby BC, Canada, Simon Fraser University, pp. 131, 07/2012.

preprint (16.08 MB)

2013

Alim, U. R., "Rendering in Shift-Invariant Spaces", Graphics Interface 2013, Regina, SK, CRC Press, 05/2013.

preprint (11.6 MB)

high resolution images (12.02 MB)

slides (13.93 MB)

2014

Alim, U. R., "Operator Discretization in Shift-Invariant Spaces", International Conference on Spectral and Higher Order Methods, Salt Lake City, UT, 06/2014.

Abstract (82.31 KB)

slides (20.64 MB)

2015

Akram, B., U. Alim, and F. Samavati, "CINAPACT-Splines: A Family of Infinitely Smooth, Accurate and Compactly Supported Splines", International Symposium on Visual Computing 2015, Las Vegas, NV, Springer (Bebis G. et al. (eds), Advances in Visual Computing, Lecture Notes in Computer Science, vol 9474), 2015.

preprint (3.26 MB)

Akram, B., "CINAPACT-Splines: A Family of Infinitely Smooth, Accurate and Compactly Supported Splines", Department of Computer Science, vol. MSc, Calgary, AB, University of Calgary, 09/2015.

Yin, D., and U. R. Alim, "Component-wise Interpolation of Solenoidal Vector Fields: A Comparative Numerical Study", Alim, Usman, no. 2015-1079-12, Calgary, AB, University of Calgary, 07/2015.

PDF (301.53 KB)

Liu, X., and U. R. Alim, "Compressive Volume Rendering", Computer Graphics Forum (Proceedings of Eurographics/IEEE-VGTC Symposium on Visualization 2015 (EuroVis 2015)), vol. 34, issue 3, pp. 101--110, 05/2015.

slides (20.91 MB)

preprint (7.32 MB)

Liu, X., "Compressive Volume Rendering", Department of Computer Science, vol. MSc, Calgary, AB, University of Calgary, pp. 81, 07/2015.

Jubair, M. Imrul, U. Alim, N. Röber, J. Clyne, A. Mahdavi-Amiri, and F. Samavati, "Multiresolution visualization of digital earth data via hexagonal box-spline wavelets", IEEE SciVis 2015 (poster), Chicago, IL, IEEE, 10/2015.

Alim, U. R., and T. Valentin de Oliveira, "A Quality-Preserving Cartesian to Body-Centered Cubic Downsampling Transform", Eurographics Conference on Visualization (EuroVis) Short Papers, Cagliari, Italy, The Eurographics Association, 05/2015.

fast forward (5.69 MB)

supplementary material (1.55 MB)

slides (9.73 MB)

preprint (1.14 MB)

2016

Jubair, M. Imrul, "Icosahedral Maps for a Multiresolution Representation of Earth Data", Department of Computer Science, vol. MSc, Calgary, University of Calgary, 12/2016.

Jubair, M. Imrul, U. R. Alim, N. Röber, J. Clyne, and A. Mahdavi-Amiri, "Icosahedral Maps for a Multiresolution Representation of Earth Data", Vision, Modeling and Visualization (VMV), vol. [to appear], Bayreuth, Germany, The Eurographics Association, 10/2016.

preprint (12.67 MB)

slides (5.78 MB)

2017

Horacsek, J. J., and U. R. Alim, "Compactly Supported Biorthogonal Wavelet Bases on the Body Centered Cubic Lattice", Computer Graphics Forum (Proceedings of Eurographics/IEEE-VGTC Symposium on Visualization 2017 (EuroVis 2017)), vol. 36, issue 3, 06/2017.

preprint (28.34 MB)

Sage worksheet and filter weights (105.59 KB)

Slides from EuroVis (14.92 MB)

Khan, F. Hasan, A. Rocha, and U. Alim, "Comparative Visualizations of Noisy and Filtered Blood Flow from 4D PC-MRI Cardiac Datasets", IEEE SciVis 2017 , Phoenix, AZ, pp. Posters, 10/2017.

poster absract (1.17 MB)

Rocha, A., U. Alim, J. Daniel Silva, and M. Costa Sousa, "Decal-maps: Real-time Layering of Decals on Surfaces for Multivariate Visualization", IEEE Transactions on Visualization and Computer Graphics (Proceedings of IEEE SciVis 2016), vol. 23, issue 1, pp. 821 -- 830, 01/2017.

preprint (35.16 MB)

slides (21.87 MB)

Rocha, A., J. Daniel Silva, U. R. Alim, and M. Costa Sousa, "Multivariate Visualization of Oceanography Data Using Decals", Workshop on Visualisation in Environmental Sciences (EnvirVis), Barcelona, Spain, The Eurographics Association, 06/2017.

preprint (2.48 MB)

presentation slides (8.12 MB)

Hosseini, S. Vahab, J. M. Taron, and U. Alim, "Optically Illusive Architecture: Producing Depthless Objects Using Principles of Linear Perspective", ACADIA 2017: DISCIPLINES & DISRUPTION , vol. Proceedings of the 37th Annual Conference of the Association for Computer Aided Design in Architecture (ACADIA), Cambridge, MA, Acadia Publishing Company, pp. 274--283, 11/2017.

preprint (7.11 MB)

2018

Mota, R. Cabral Ram, A. Rocha, J. Daniel Silva, U. Alim, and E. Sharlin, "3De Interactive Lenses for Visualization in Virtual Environments", IEEE SciVis Short Papers, Berlin, Germany, IEEE, 10/2018.

Horacsek, J. J., and U. Alim, "A closed PP form of box splines via Green’s function decomposition", Journal of Approximation Theory, vol. 233, pp. 37--57, 09/2018.

preprint (1.1 MB)

Rocha, A. C. A., J. D. Silva, U. R. Alim, S. Carpendale, and M. C. Sousa, "Decal-Lenses: Interactive Lenses on Surfaces for Multivariate Visualization", IEEE Transactions on Visualization and Computer Graphics, pp. 1-1, 2018.

preprint (24.03 MB)

Presentation slides from SciVis 2018 (2.5 MB)