Research

Background

I finished my PhD in Computer Graphics at University of Konstanz in October 2018, and worked as a postdoc at KAUST till May 2024. I am currently looking for a new job, meanwhile working as an independent researcher and have published two conference papers since I left KAUST. I hold a higher-education teaching certificate from Harvard, a Master of Science degree in Mobile and Personal Communications from King’s College London, and a Master of Business Administration degree from University of Khartoum. I graduated in 2002 at University of Khartoum as an electrical engineer, and spent many years working in different roles with various employers.

Publications

2024
CGVC2024.png

Abdalla G. M. Ahmed

Serial Gaussian Blue Noise Stippling

Computer Graphics & Visual Computing (CGVC), London, The Eurographics Association, Sep 2024

Paper, URI, doi:10.2312/cgvc.20241226, Code

EGSR2024.png

Abdalla G. M. Ahmed

An Implementation Algorithm of 2D Sobol Sequence: Fast, Elegant, and Compact

Eurographics Symposium on Rendering (EGSR), London, The Eurographics Association, Jul 2024

Paper, URI, doi:10.2312/sr.20241147, Code

2023
xi 2023

Abdalla G.M. Ahmed, Mikhail Skopenkov, Markus Hadwiger, and Peter Wonka
Analysis and Synthesis of Digital Dyadic Sequences

ACM Trans. Graph. (Proceedings of SIGGRAPH Asia), 42(6), pp. 218:1–218:17, Dec 2023

WWW, doi:10.1145/3618308

ART-Owen 2023

Abdalla G.M. Ahmed, Matt Pharr, and Peter Wonka
ART-Owen Scrambling

ACM Trans. Graph. (Proceedings of SIGGRAPH Asia), 42(6), pp. 258:1–258:11, Dec 2023

WWW, doi:10.1145/3618307

Imprinting 2023

Abdalla G.M. Ahmed
Image Printing on Stones, Wood, and More

ACM SIGGRAPH 2023 Posters, Article No. 9, pp. 1–2, Jul 2023

WWW, doi:10.1145/3588028.3603686

2022
Gaussian Blue Noise 2022

Abdalla G.M. Ahmed, Jing Ren, and Peter Wonka
Gaussian Blue Noise

ACM Trans. Graph. (Proceedings of SIGGRAPH Asia), 41(6), pp. 260:1–260:15, Dec 2022

WWW, doi:10.1145/3550454.3555519

2021
Dyadic Nets 2021

Abdalla G.M. Ahmed and Peter Wonka
Optimizing Dyadic Nets

ACM Trans. Graph. (Proceedings of SIGGRAPH), 40(4), pp. 141:1–141:17, Aug 2021

WWW, doi:10.1145/3450626.3459880

2020
SigAsia 2020

Abdalla G.M. Ahmed and Peter Wonka
Screen-Space Blue-Noise Diffusion of Monte Carlo Sampling Error via Hierarchical Ordering of Pixels

ACM Trans. Graph. (Proceedings of SIGGRAPH Asia), 39(6), pp. 244:1–244:15, Dec 2020

WWW, doi:10.1145/3414685.3417881

CGVC2020.png

Abdalla G. M. Ahmed

Continuous-Line-Based Halftoning with Pinwheel Tiles

Computer Graphics & Visual Computing (CGVC), London, pp. 39–44, Eurographics Association, Sep 2020

WWW Paper, URI, doi:10.2312/cgvc.20201149

2019
CGVC2019.png

Abdalla G. M. Ahmed

Sampling with Pinwheel Tiles

Computer Graphics & Visual Computing (CGVC), Bangor, pp. 147–148, Eurographics Association, Sep 2019

Paper, URI, doi:10.2312/cgvc.20191271

Weaving Block S7

Alexander Keller, Iliyan Georgiev, Abdalla Ahmed, Per H Christensen, Matt Pharr

My Favorite Samples

ACM SIGGRAPH 2019 Courses; Article No. 15, pp. 1–271, Jul 2019

Abstract, doi:10.1145/3305366.3329901

Weaving Block S7

Abdalla G. M. Ahmed

Tuti-Like Interweaving

Proceedings of Bridges 2019: Mathematics, Art, Music, Architecture, Education, Culture; pp. 195–202, Tessellations Publishing, Jul 2019

Get for free at Bridges Archive.

Analysis of Sample Correlations

Gurprit Singh, Cengiz Öztireli, Abdalla G. M. Ahmed, David Coeurjolly, Kartic Subr, Oliver Deussen, Victor Ostromoukhov, Ravi Ramamoorthi, Wojciech Jarosz
Analysis of Sample Correlations for Monte Carlo Rendering

Computer Graphics Forum

Preprint, doi:10.1111/cgf.13653

2018
thesis.png

Abdalla G. M. Ahmed

Grid-Based Techniques for Semi-Stochastic Sampling

Doctoral dissertation, University of Konstanz, 2018

URI

CGVC2018.png

Abdalla G. M. Ahmed

Voronoi Tree Maps with Circular Boundaries

Computer Graphics & Visual Computing (CGVC), Swansea, pp. 115–116, Eurographics Association, Sep 2018

Paper, URI, doi:10.2312/cgvc.20181214

Weaving Blocks

Abdalla G. M. Ahmed and Oliver Deussen

Monochrome Map Weaving with Truchet-Like Tiles

Proceedings of Bridges 2018: Mathematics, Art, Music, Architecture, Education, Culture; pp. 45–52, Tessellations Publishing, Jul 2018

Get for free at Bridges Archive.

2017
CCVT

Abdalla G. M. Ahmed and Oliver Deussen

Capacity-Constrained Voronoi Tessellation Revisited

Computer Graphics & Visual Computing (CGVC), Manchester, pp. 97–99, Eurographics Association, Sep 2017

Best-short-paper award!

WWW, Paper, doi:10.2312/cgvc.20171285

q30p11

Abdalla G. M. Ahmed and Oliver Deussen

Colored AA Bitmaps

Computer Graphics & Visual Computing (CGVC), Manchester, pp. 77–80, Eurographics Association, Sep 2017

WWW, Paper, doi:10.2312/cgvc.20171281

ART

Abdalla G.M. Ahmed, Till Niese, Hui Huang, Oliver Deussen
An Adaptive Point Sampler on a Regular Lattice
ACM Trans. Graph. (Proceedings of SIGGRAPH), 36(4), pp. 138:1–138:13, Jul 2017

WWW, doi:10.1145/3072959.3073588; get for free here.

BRIDGES 2017

Abdalla G. M. Ahmed and Oliver Deussen

Tuti Interweaving

Proceedings of Bridges 2017: Mathematics, Art, Music, Architecture, Education, Culture; pp. 229–236, Tessellations Publishing, Jul 2017

Get for free at Bridges Archive.

2016
PPO

Abdalla G.M. Ahmed, Jianwei Guo, Dong-Ming Yan, Jean-Yves Franceschi, Xiaopeng Zhang, and Oliver Deussen
A Simple Push-Pull Algorithm for Blue-Noise Sampling

IEEE Transactions on Visualization and Computer Graphics

Preprint, Supplementary, doi:10.1109/TVCG.2016.2641963

SigAsia 2016

Abdalla G.M. Ahmed, Hélène Perrier, David Coeurjolly, Victor Ostromoukhov, Jianwei Guo, Dong-Ming Yan, Hui Huang, and Oliver Deussen
Low-Discrepancy Blue Noise Sampling

ACM Trans. Graph. (Proceedings of SIGGRAPH Asia), 35(6), pp. 247:1–247:13, Nov 2016

WWW, WWW Konstanz, WWW LIRIS, doi:10.1145/2980179.2980218

CGVC 2016

Abdalla G. M. Ahmed and Oliver Deussen

Amplitude Modulated Line-Based Halftoning

Proceedings of Computer Graphics & Visual Computing (CGVC), Bournemouth, pp. 93–97, Eurographics Association, Sep 2016

Preprint, doi:10.2312/cgvc.20161294

BRIDGES 2016

Abdalla G. M. Ahmed and Oliver Deussen

Tuti Weaving

Proceedings of Bridges 2016: Mathematics, Music, Art, Architecture, Education, Culture; pp. 49–56, Tessellations Publishing, Aug 2016

Get for free at Bridges Archive.

Red Noise

Abdalla G. M. Ahmed

Sampling with AA Patterns

Eurographics 2016 Doctoral Consortium, Lisbon, May 2016

Paper, Poster

2015
SigAsia 2015

Abdalla G.M. Ahmed, Hui Huang, Oliver Deussen
AA Patterns for Point Sets with Controlled Spectral Properties

ACM Trans. Graph. (Proceedings of SIGGRAPH Asia), 34(6), pp. 212:1–212:8, Nov 2015

WWW, doi:10.1145/2816795.2818139

BRIDGES 2015

Abdalla G. M. Ahmed

From Stippling to Scribbling

Proceedings of Bridges 2015: Mathematics, Music, Art, Architecture, Culture; pp. 267–274, Tessellations Publishing, Jul 2015

Get for free at Bridges Archive.

2014  
NPAR 2014

Abdalla G. M. Ahmed

Modular Line-Based Halftoning via Recursive Division

Proceedings of the 12th International Symposium on Non-photorealistic Animation and Rendering, Vancouver, Aug 2014.

WWW doi:10.1145/2630397.2630403

CAe 2014

Abdalla G. M. Ahmed

Line-Based Rendering with Truchet-Like Tiles

Proceedings of the 10th International Symposium on Computational Aesthetics in Graphics, Visualization, and Imaging, Vancouver, Aug 2014.

WWW, doi:10.1145/2630099.2630111

BRIDGES 2014

Abdalla G. M. Ahmed

Modular Duotone Weaving Design

Proceedings of Bridges 2014: Mathematics, Music, Art, Architecture, Culture; pp. 27–34, Tessellations Publishing, Aug 2014.

Get for free at Bridges Archive.

2013  
BRIDGES 2013

Abdalla G. M. Ahmed

AA Weaving

Proceedings of Bridges 2013: Mathematics, Music, Art, Architecture, Culture; pp. 263–270, Tessellations Publishing, July 2013.

Get for free at Bridges Archive.

2012  
TPCG 2012

Abdalla G. M. Ahmed

On the Fractal Behaviour of AA Patterns

Theory and Practice of Computer Graphics 2012, Rutherford, United Kingdom, pp. 93–97, Eurographics Association, 2012.

doi:10.2312/LocalChapterEvents/TPCG/TPCG12/093-097

2011  
BRIDGES 2011

Abdalla G. M. Ahmed

Mathematical Hints for Parameter Selection for AA Patterns

Bridges 2011: Mathematics, Music, Art, Architecture, Culture, pp. 271–278, Tessellations Publishing, 2011

Get for free at Bridges Archive.

EG 2011

Abdalla G. M. Ahmed

AA Patterns

EG 2011 – Posters, pp. 35–36, Eurographics Association, 2011.

doi:10.2312/EG2011/posters/035-036

JGT 2011

Abdalla G. M. Ahmed

Pixel Patterns from Quantization Artifacts of Forward Affine Mapping

Journal of Graphics, GPU, and Game Tools, vol. 15(2), pp. 73–94, Taylor & Francis, 2011.

doi:10.1080/2151237X.2011.563670

2010  
CSNDSP 2010

Abdalla G. M. Ahmed and Fatin Said

Implementation Alternatives of Space Block-Coded OFDM

Communication Systems Networks and Digital Signal Processing (CSNDSP), 2010 7th International Symposium on, vol. 1, pp.15–19, July 2010

IEEE Xplore

2009  
E-Letters 2009

Abdalla G. M. Ahmed and Fatin Said

Unified Model for Time-Domain Implementation of Space Block-Coded OFDM

Electronic Letters, vol. 45, no. 25, pp. 1336–1337, 2009.

doi:10.1049/el.2009.2456, IEEE Xplore

Software

AA Bitmaps

Abdalla G. M. Ahmed

AA Bitmaps

Google Play Store

URL

Refereed Artwork

Script

Abdalla G. M. Ahmed

Mysterious Script

In Conan Chadbourne, Robert Fathauer, Katie McCallum, and Nathan Selikoff, editors, Bridges Stockholm 2018 Art Exhibition Catalog, page 3. Tessellations Publishing, Phoenix, Arizona, 2017.

WWW

Reza

Abdalla G. M. Ahmed and Nithikul Nimkulrat

A Woven Portrait of Reza

In Conan Chadbourne, Robert Fathauer, Katie McCallum, and Nathan Selikoff, editors, Bridges Waterloo 2017 Art Exhibition Catalog, page 3. Tessellations Publishing, Phoenix, Arizona, 2017.

WWW

EAA(pi)

Abdalla G. M. Ahmed

EAA(pi)

In Conan Chadbourne, Robert Fathauer, Katie McCallum, and Nathan Selikoff, editors, Bridges Finland 2016 Art Exhibition Catalog, page 13. Tessellations Publishing, Phoenix, Arizona, 2016.

WWW

Cubes

Abdalla G. M. Ahmed

Cubes

In Conan Chadbourne, Robert Fathauer, Katie McCallum, and Nathan Selikoff, editors, Bridges Baltimore 2015 Art Exhibition Catalog, page 3. Tessellations Publishing, Phoenix, Arizona, 2015.

WWW

AA Flowers

Abdalla G. M. Ahmed

AA Flowers

In Conan Chadbourne, Robert Fathauer, Katie McCallum, and Nathan Selikoff, editors, Bridges Baltimore 2015 Art Exhibition Catalog, page 3. Tessellations Publishing, Phoenix, Arizona, 2015.

WWW

Boxes

Abdalla G. M. Ahmed

Boxes

In Conan Chadbourne, Robert Fathauer, Katie McCallum, and Nathan Selikoff, editors, Bridges Baltimore 2015 Art Exhibition Catalog, page 3. Tessellations Publishing, Phoenix, Arizona, 2015.

WWW

Op Art World

Abdalla G. M. Ahmed

Around the World in 80 Days

In Conan Chadbourne, Robert Fathauer, and Katie McCallum, editors, Bridges Seoul 2014 Art Exhibition Catalog. Tessellations Publishing, Phoenix, Arizona, 2014

WWW

AA Life

Abdalla G. M. Ahmed

AA Life

In Conan Chadbourne, Robert Fathauer, and Katie McCallum, editors, Bridges Seoul 2014 Art Exhibition Catalog. Tessellations Publishing, Phoenix, Arizona, 2014

WWW

Program Committee

Paper Review

SIGGRAPH 2018

WWW

Eurographics 2018

WWW

High-Performance Graphics 2018

WWW

Pacific Graphics 2018

WWW

Siggraph Asia 2016

WWW

ACM Transactions on Graphics (TOG)

WWW

Computer Graphics Forum

WWW

Journal of Mathematics and the Arts

WWW