Eduardo Simões Lopes Gastal
Assistant Professor of Computer Science
eslgastal@inf.ufrgs.br
• Real-Time Frequency Adjustment (NEW)
• Spectral Remapping
• Non-Uniform Filtering
• Adaptive Manifolds
• Domain Transform
• Google Scholar • Lattes
About
I am an Assistant Professor at the
Institute of Informatics
of the
Federal University of Rio Grande do Sul (UFRGS), in Brazil 
.
My work focuses on efficient and novel filters for images and videos, and I am generally interested in space-frequency analysis, sampling theory, image and signal processing, computer graphics, and applied mathematics.
I am actively looking for students interested in these areas who wish to pursue a master's degree or undergraduate studies. If you would like to work with me please check my research below and contact me by e-mail.
I hold a Ph.D. in Computer Science from UFRGS where I worked with Manuel M. Oliveira. Our research on efficient high-dimensional filtering for image and video processing was awarded the inaugural ACM SIGGRAPH Outstanding Doctoral Dissertation Award and first place in the Brazilian Computer Society's Doctoral Dissertation Contest.
You can find me at Office 219 Building 43424 - Campus do Vale. Full address: Instituto de Informática, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves 9500, 91501-970 Porto Alegre - RS - Brasil (Caixa postal 15064).
Teaching
Minhas aulas sobre Fundamentos de Computação Gráfica, ministradas para os cursos de Ciência da Computação e Engenharia da Computação no Instituto de Informática da UFRGS (semestre 2020/1), estão gravadas e disponíveis em video no Youtube no link abaixo:
Fundamentos de Computação Gráfica - INF/UFRGS - 2020/1 (Youtube)
News
2021 / 01 I am serving as General Chair for SIBGRAPI 2021 – Conference on Graphics, Patterns and Images, the 34th edition of the conference annually promoted by the Brazilian Computer Society.
2020 / 08 Our Domain Transform edge-aware smoothing filter is included in GIMP. You can find it under "Tools" > "GEGL Operation" > "Smooth by Domain Transform". Try it out! Implementation by Felipe Kersting.
2020 / 05
Our presentation video for the paper "Prefilters for Sharp Image Display" (Eurographics 2020) is available on Youtube on this link .
2019 / 07 A video about our Spectral Remapping technology has been released by UFRGS TV:
2018 / 11 I am Associate Editor for Computers & Graphics Journal.
2018 / 03 I am serving as Program Chair for SIBGRAPI 2018 – Conference on Graphics, Patterns and Images, the 31st edition of the conference annually promoted by the Brazilian Computer Society and in cooperation with ACM SIGGRAPH.
2017 / 08 Our paper on Spectral Remapping will be presented at SIGGRAPH 2017.
2016 / 07 We received the inaugural ACM SIGGRAPH Outstanding Doctoral Dissertation Award at SIGGRAPH 2016. My talk is available online.
2016 / 06 We got first place in the Brazilian Computer Society's Doctoral Dissertation Contest at CSBC 2016.
2015 / 11 I've released an updated version of our Non-Uniform Filtering source code for Julia v0.4. A static version of our Jupyter notebook is available online.
2015 / 05 Our paper on Non-Uniform Filtering has received an Honorable Mention at the Eurographics 2015 Best Paper Award.
Research
I have not had the time to update the list below. Please check my Google Scholar for latest publications.
Real-Time Frequency Adjustment of Images and Videos
Rafael L. Germano,
Manuel M. Oliveira
and
Computer Graphics Forum.
Volume 40 (2021), Number 2, Proceedings of Eurographics 2021,
[Project Page]
[PDF]
[source code]
[bibtex]
[DOI]
Domain Transform for Spherical Geometry Images
Felipe Einsfeld Kersting
and
Computers & Graphics.
Volume 93 (2020), Special Section on SIBGRAPI 2020, pp. 71-83.
ISSN 0097-8493.
[ Presentation Video ]
[DOI]
Prefilters for Sharp Image Display
Luís Cláudio Gouveia Rocha,
Manuel M. Oliveira
and
Computer Graphics Forum.
Volume 39 (2020), Number 2, Proceedings of Eurographics 2020, pp. 435-449. Norrköping, Sweden.
[PDF]
[ Presentation Video ]
[DOI]
Synthesizing Camera Noise Using Generative Adversarial Networks
Bernardo Henz, and Manuel M. Oliveira
IEEE Transactions on Visualization and Computer Graphics.
ISSN 1077-2626. To Appear. 2020.
[Project Page]
[PDF]
[source code]
[bibtex]
[DOI]
Regularized Kelvinlet Inversion for Real-Time Image Deformation and Video Time Warping
Guilherme G. Haetinger
and
SIBGRAPI 2020.
Proceedings of SIBGRAPI Conference on Graphics, Patterns and Images (2020), pp. 124-131.
[ Presentation Video ]
[DOI]
Best Computer Graphics/Visualization Main Track Paper Award
Performance and Error Analysis of Recursive Edge-Aware Gaussian Filters on GPUs
Hermes H. Ferreira,
,
Lucas M. Schnorr
and
Philippe O. A. Navaux
SIBGRAPI 2020.
Proceedings of SIBGRAPI Conference on Graphics, Patterns and Images (2020), pp. 85-92.
[ Presentation Video ]
[DOI]
Deep Joint Design of Color Filter Arrays and Demosaicing
Bernardo Henz, and Manuel M. Oliveira
Computer Graphics Forum.
Volume 37 (2018), Number 2, Proceedings of Eurographics 2018, pp. 389-399. Delft, The Netherlands.
[Project Page]
[PDF]
[source code]
[bibtex]
[DOI]
Spectral Remapping for Image Downscaling
and Manuel M. Oliveira
ACM Transactions on Graphics.
Volume 36 (2017), Number 4, Proceedings of SIGGRAPH 2017, Article 145. Los Angeles, USA.
[Project Page]
[PDF]
[source code]
[bibtex]
[DOI]
Efficient High-Dimensional Filtering for Image and Video Processing
Doctoral Dissertation, under supervision of Dr. Manuel M. Oliveira.
Federal University of Rio Grande do Sul, March 2015. Porto Alegre, RS, Brazil.
[DOI]
ACM SIGGRAPH Outstanding Doctoral Dissertation Award (2016)
First place in the Brazilian Computer Society's Doctoral Dissertation Contest (2016)
High-Order Recursive Filtering of Non-Uniformly Sampled Signals for Image and Video Processing
and Manuel M. Oliveira
Computer Graphics Forum.
Volume 34 (2015), Number 2, Proceedings of Eurographics 2015, pp. 81-93. Zürich, Switzerland.
[Project Page]
[PDF]
[source code]
[bibtex]
[DOI]
Honorable Mention at Eurographics 2015 Best Paper Award
Adaptive Manifolds for Real-Time High-Dimensional Filtering
and Manuel M. Oliveira
ACM Transactions on Graphics.
Volume 31 (2012), Number 4, Proceedings of SIGGRAPH 2012, Article 33. Los Angeles, USA.
[Project Page]
[PDF]
[source code]
[bibtex]
[DOI]
Domain Transform for Edge-Aware Image and Video Processing
and Manuel M. Oliveira
ACM Transactions on Graphics.
Volume 30 (2011), Number 4, Proceedings of SIGGRAPH 2011, Article 69. Vancouver, Canada.
[Project Page]
[PDF]
[source code]
[demo]
[bibtex]
[DOI]
Last updated: April 2021.