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Leonardo Sacht

Thanks for visiting my website. I am an Assistant Professor at the Department of Mathematics of UFSC, Brazil. I recently spent one year as a Visiting Professor at University of Toronto.

Before joining UFSC, I was a doctoral student at IMPA and a visiting student at ETH Zurich. My main research areas are Geometry and Image Processing.

E-mail address: leonardo.sacht@ufsc.br.

CV



Journal Publications

Bounded biharmonic blending of Möbius transformations for flexible omnidirectional image rectification
Authors: Leonardo Souto Ferreira, Leonardo Sacht,.
Publication: Computers and Graphics, volume 93 (SIBGRAPI 2020).
Month/Year: December/2020
[Preprint] [Paper link] [Long presentation (video)] [Short presentation (video)] [Project page]

Real-time continuous image processing
Authors: Leonardo Sacht, Diego Nehab, Rodolfo Schulz de Lima.
Publication: International Journal of Image and Graphics, volume 18, Issue 3.
Month/Year: July/2018
[Paper] [Source code] [Full resolution results]

Local Moebius transformations applied to omnidirectional images
Authors: Leonardo Souto Ferreira, Leonardo Sacht, Luiz Velho.
Publication: Computers and Graphics, volume 68 (SIBGRAPI 2017).
Month/Year: November/2017
[Paper] [Source code] [Project Page]

Optimized quasi-interpolators for image reconstruction
Authors: Leonardo Sacht, Diego Nehab.
Publication: IEEE Transactions on Image Processing, Volume 24, Issue 12.
Month/Year: December/2015
[Paper] [Source code]

Nested Cages
Authors: Leonardo Sacht, Etienne Vouga, Alec Jacobson.
Publication: ACM Transactions on Graphics, volume 34, Issue 6 (SIGGRAPH Asia 2015).
Month/Year: October/2015
[Paper] [Video] [Source code] [Project Page] [Supplemental Data]

Real-time correction of panoramic images using hyperbolic Moebius transformations
Authors: Luis Penaranda, Luiz Velho, Leonardo Sacht.
Publication: Journal of Real-Time Image Processing, Volume 15.
Year: May/2015
[Paper] [Video]

Consistent Volumetric Discretizations Inside Self-Intersecting Surfaces
Authors: Leonardo Sacht, Alec Jacobson, Daniele Panozzo, Christian Schueller, Olga Sorkine-Hornung.
Publication: Computer Graphics Forum, volume 32, Issue 5 (SGP 2013).
Month/Year: August/2013
[Paper] [Video] [Project Page]

On computing Bezier curves by Pascal matrix methods
Authors: Licio Bezerra, Leonardo Sacht.
Publication: Applied Mathematics and Computation, volume 217, Issue 24.
Year: August/2011
[Link] [arXiv Preprint]

Conference Publications

Normal Transformations for Overhang Reduction
Authors: Carlos Eduardo Leal de Castro, Leonardo Sacht.
Publication: SIBGRAPI - Workshop of Works in Progress.
Year: 2019
[Paper] [Poster]

Conformal Transformations from the Sphere to the Plane
Authors: Mateus Souza Oliveira, Leonardo Sacht.
Publication: ERMAC (Regional Congress on Applied and Computational Mathematics).
Year: 2019
[Extended abstract (in Portuguese)] [Poster (in Portuguese)]

Fourier Domain Anti-Aliasing Recovery
Authors: Joao Paulo Navarro Barbosa, Leonardo Sacht.
Publication: J3M - UFPR (Undergraduate Works).
Year: 2017
[Project page (in English)] [Extended abstract (in Portuguese)] [Poster (in Portuguese)]

Application of Image Reconstruction Methods to Audio Signals
Authors: Carlos Eduardo Leal de Castro, Leonardo Sacht.
Publication: J3M - UFPR (Undergraduate Works).
Year: 2017
[Extended abstract (in Portuguese)] [Poster (in Portuguese)] [Project page (in Portuguese)]

Vector Analysis of the Cable Tension Conditions
Authors: Thais Muraro, Daniel Martins, Leonardo Sacht.
Publication: International Symposium on Multibody Systems and Mechatronics (MuSMe).
Year: 2017
[Paper link]

Mean Curvature Flow and Applications
Authors: Maria Eduarda Duarte, Leonardo Sacht.
Publication: SIBGRAPI Workshop of Undergraduate Works (WUW).
Year: 2017
[Paper][Poster]

Analysis of Optimized Quasi-interpolators
Authors: Airton Jose Schmitt Jr., Leonardo Sacht.
Publication: SIBGRAPI Workshop of Undergraduate Works (WUW).
Year: 2017
[Paper][Poster]

Complex Plane Transformations for Manipulation and Visualization of Panoramas
Authors: Leonardo Sacht, Luiz Velho.
Publication: International Conference on Computer Graphics Theory and Applications (GRAPP), short paper.
Year: 2013
[Paper][Video]

Scalable Motion-Aware Panoramic Videos
Authors: Leonardo Sacht, Luiz Velho, Diego Nehab, Marcelo Cicconet.
Publication: SIGGRAPH Asia Technical Sketches and IMPA Technical Report
Year: 2011
[Technical Sketch] [Report] [Video]

Optimizing projections from the unit sphere to the image plane for generation of panoramic images
Authors: Leonardo Sacht, Paulo Cezar Carvalho, Luiz Velho
Publication: Proceedings of Brazilian Congress of Applied and Compuational Mathematics (CNMAC)
Year: 2010
[Abstract] [Poster]

Content-based projections for panoramic images and videos (short version of my thesis)
Authors: Leonardo Sacht, Paulo Cezar Carvalho, Luiz Velho
Publication: Proceedings of Workshop of Thesis and Dissertations (WTD) - Conference on Graphics, Patterns and Images (SIBGRAPI)
Year: 2010
[Paper] [Poster]

Face and straight line detection in equirectangular images
Authors: Leonardo Sacht, Paulo Cezar Carvalho, Luiz Velho, Marcelo Gattass
Publication: Proceedings of Workshop of Computer Vision (WVC)
Year: 2010
[Paper] [Poster]

Degree Publications

Optimized Quasi-Interpolators for Image Reconstruction and Consistent Volumetric Discretizations Inside Self-Intersecting Surfaces
Author: Leonardo Sacht. Advisor: Diego Nehab.
Publication: PhD Dissertation - IMPA
Year: 2014
[Full Text]

Content-based projections for panoramic images and videos
Author: Leonardo Sacht. Advisors: Paulo Cezar Carvalho, Luiz Velho.
Publication: Master Thesis - IMPA
Year: 2010
[Full Text] [Presentation]


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Contact Information

Universidade Federal de Santa Catarina
Departamento de Matematica
Campus Trindade
Florianopolis, SC
88040-900, Brazil

e-mail: leonardo.sacht@ufsc.br
phone: +55 48 3721-3585


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