This is me in Long Beach

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myself in a nutshell: a passionate scientist.

About me

Thiago Lopes Trugillo da Silveira is an Assistant Professor ("Professor Adjunto") at the Federal University of Rio Grande do Sul (UFRGS), Brazil. He holds a D.Sc. degree in Computer Science (2019) from UFRGS, an M.Sc. degree in Computer Science (2016), and B.Sc. degrees in Information Systems (2015) and Computer Science (2013) from the Federal University of Santa Maria (UFSM), Brazil. Member of the Signal Processing Group @ Stats. His current interests include signal and image processing, pattern recognition, and computer vision.

Education

Doctorate in Computer Science
Period:
2016 - 2019
University:
Federal University of Rio Grande do Sul
Dissertation:

Dense 3D Indoor Scene Reconstruction from Spherical Images PDF BibTeX

Advisor:
Cláudio Rosito Jung
Final average grade:
"A"
Master in Computer Science
Period:
2014 - 2016
University:
Federal University of Santa Maria
Thesis:

Sleep Stages Classification Through Application of the Discrete Wavelet Transform on a Single Electroencephalogram Channel PDF BibTeX

Advisor:
Alice de Jesus Kozakevicius
Coadvisor:
Cesar Ramos Rodrigues
Final average grade:
"A"
Bachelor in Information Systems
Period:
2014 - 2015
University:
Federal University of Santa Maria
Thesis:

Development and Implementation of a System for Recognition of Characteristic X-Ray Spectra of Minerals PDF BibTeX

Advisor:
José Antônio Trindade Borges da Costa
Final average grade:
8.76
Bachelor in Computer Science
Period:
2010 - 2013
University:
Federal University of Santa Maria
Thesis:

16-point DCT Approximations with Low Arithmetic Complexity for Image Compression PDF BibTeX

Advisor:
Alice de Jesus Kozakevicius
Coadvisor:
Fábio Mariano Bayer
Final average grade:
8.64

Teaching

Federal University of Rio Grande do Sul
  • Assistant Professor (2020 - current)
    • Data Structures I (x1)
    • Introduction to Programming (x3)
    • Object-oriented Programming (x1)
  • Temporary Lecturer (2019 - 2020)
    • Introduction to Programming (x6)
Federal University of Rio Grande
  • Assistant Professor (2020 - 2020)
    • Discrete Mathematics (x2)
    • Algorithms and Data Structures I (x2)
Sul-rio-grandense Federal Institute of Education, Science and Technology
  • Assistant Professor (2020 - 2020)
    • Web Pages Construction (x2)
    • Web Pages Construction I (x2)
    • Web Programming Languages I (x1)
    • Parallel and Distributed Architectures (x1)

Awards

  • Honorable Mention Award - Ph.D. Thesis Category, Workshop of Theses and Dissertations of the Conference on Graphics, Patterns and Images (SIBGRAPI), 2020.

  • Best Master Thesis Award "Odelar Leite Linhares", Brazilian Society of Computational and Applied Mathematics (SBMAC), 2016.

  • Featured Student Award in Computer Science from the Federal University of Santa Maria, Brazilian Computer Society (SBC), 2013.

Publications

Journal papers
  1. Oliveira, A. Q., Silveira, T. L. T., Walter, M. and Jung, C. R.; A Hierarchical Superpixel-based Approach for DIBR View Synthesis; Transactions on Image Processing; IEEE; volume 30; p. 6408-6419; 2021. DOI BibTeX

  2. Canterle, D. R., Silveira, T. L. T., Bayer, F. M. and Cintra, R. J.; A Multiparametric Class of Low-complexity Transforms for Image and Video Coding; Signal Processing; Elsevier; volume 176; number 107685; 2020. arXiv DOI BibTeX

  3. Oliveira, R. S., Cintra, R. J., Bayer, F. M., Silveira, T. L. T., Leite, A. and Madanayake, A.; Low-complexity 8-point DCT approximation based on angle similarity for image and video coding; Multidimensional Systems and Signal Processing; Springer; volume 30; issue 3; p. 1363-1394; 2019. arXiv DOI BibTeX

  4. Coelho, D. F. G., Cintra, R. J., Bayer, F. M., Kulasekera, S., Madanayake, A., Oliveira, P. A. M., Silveira, T. L. T., Oliveira, R. S. and Dimitrov, V.; Low-complexity Loeffler DCT Approximations for Image and Video Coding; Journal of Low Power Electronics and Applications; MDPI; volume 8; issue 4; number 46; 2018. DOI BibTeX

  5. Braun, E. T., Silveira, T. L. T., Kozakevicius, A. J., Rodrigues, C. R. and Baratto, G.; Sleep stages classification using spectral based statistical moments as features; Revista de Informática Teórica e Aplicada; UFRGS; volume 25; issue 1; p. 11-22; 2018. DOI BibTeX

  6. Tablada, C. J., Silveira, T. L. T., Cintra, R. J. and Bayer, F. M.; DCT approximations based on Chen's factorization; Signal Processing: Image Communication; Elsevier; volume 58; p. 14-23; 2017. DOI BibTeX

  7. Silveira, T. L. T., Oliveira, R. S., Bayer, F. M., Cintra, R. J. and Madanayake, A.; Multiplierless 16-point DCT approximation for low-complexity image and video coding; Signal, Image and Video Processing; Springer; volume 11; issue 2; p. 227-233; 2017. arXiv DOI BibTeX

  8. Silveira, T. L. T., Kozakevicius, A. J. and Rodrigues, C. R.; Single-channel EEG sleep stage classification based on a streamlined set of statistical features in wavelet domain; Medical & Biological Engineering & Computing; Springer; volume 55; issue 2; p. 343-352; 2017. DOI BibTeX

  9. Silveira, T. L. T., Kozakevicius, A. J. and Rodrigues, C. R.; Automated drowsiness detection through wavelet packet analysis of a single EEG channel; Expert Systems with Applications; Elsevier; volume 55; p. 559-565; 2016. DOI BibTeX

  10. Silveira, T. L. T., Bayer, F. M., Cintra, R. J., Kulasekera, S., Madanayake, A. and Kozakevicius, A. J.; An orthogonal 16-point approximate DCT for image and video compression; Multidimensional Systems and Signal Processing; Springer; volume 27; issue 1; p. 87-104; 2016. arXiv DOI BibTeX

Books
  1. Silveira, T. L. T. and Kozakevicius, A. J.; Transformada Wavelet de Haar: conceitos, formulações e aplicações; Colóquios de Matemática das Regiões - Região Sul; edição 1; Sociedade Brasileira de Matemática; 2016. PDF ISBN BibTeX

Book chapters
  1. Coelho, D. F. G., Coutinho, V. A., Silveira, T. L. T., Cintra, R. J., Bayer, F. M., Madanayake, A. and Dimitrov V. S.; Discrete Transform Approximations for Video Coding; VLSI Architectures for Future Video Coding; edition 1; Institution of Engineering and Technology; p. 257-297; 2019. DOI BibTeX

  2. Pasin, M. and Silveira, T. L. T.; Improving Public Transport Management: A Simulation Based on the Context of Software Multi-agents; Advances in Intelligent Systems and Computing; edition 1; Springer; p. 323-329; 2013. DOI BibTeX

Conference papers
  1. Silveira, T. L. T. and Jung, C. R.; Dense 3D Indoor Scene Reconstruction from Spherical Images; Extended Proceedings of the Conference on Graphics, Patterns and Images (SIBGRAPI/WTD); p. 8-14; 2020. PDF DOI BibTeX

  2. Avelar, P. H. C., Tavares, A. R., Silveira, T. L. T., Jung, C. R. and Lamb, L. C.; Superpixel Image Classification with Graph Attention Networks; Proceedings of the Conference on Graphics, Patterns and Images (SIBGRAPI); p. 203-209; 2020. arXiv PDF DOI BibTeX

  3. Silveira, T. L. T. and Jung, C. R.; Perturbation Analysis of the 8-Point Algorithm: a Case Study for Wide FoV Cameras; Proceedings of the IEEE Conference on Computer Vision and Pattern Recognition (CVPR); p. 11757-11766; 2019. PDF DOI BibTeX

  4. Silveira, T. L. T. and Jung, C. R.; Dense 3D Scene Reconstruction from Multiple Spherical Images for 3-DoF+ VR Applications; Proceedings of the IEEE Conference on Virtual Reality and 3D User Interfaces (VR); p. 9-18; 2019. DOI BibTeX

  5. Oliveira, A. Q., Silveira, T. L. T., Walter, M. and Jung, C. R.; On the Performance of DIBR Methods when Using Depth Maps from State-of-the-art Stereo Matching Algorithms; Proceedings of the IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP); p. 2272-2276; 2019. DOI BibTeX

  6. Silveira, T. L. T., Dal'Aqua, L. P. and Jung, C. R.; Indoor Depth Estimation from Single Spherical Images; Proceedings of the IEEE International Conference on Image Processing (ICIP); p. 2935-2939; 2018. DOI BibTeX

  7. Silveira, T. L. T. and Jung, C. R.; Evaluation of Keypoint Extraction and Matching for Pose Estimation Using Pairs of Spherical Images; Proceedings of the Conference on Graphics, Patterns and Images (SIBGRAPI); p. 374-381; 2017. PDF DOI BibTeX

  8. Silveira, T. L. T., Kozakevicius, A. J. and Rodrigues, C. R.; Classificação de estágios de sono através da aplicação de DWT sobre um único canal de EEG; Proceeding Series of the Brazilian Society of Applied and Computational Mathematics; volume 5; issue 1; p. 1-7; 2016. DOI BibTeX

  9. Silveira, T. L. T., Pasin, M. and Lima, J. C. D.; Experimental Evaluation of Intersection Control Policies: a Simulation Based on Ubiquitous Computing and VANETs; Proceedings of XL Conferencia Latinoamericana en Informática (CLEI); 2014. DOI BibTeX

  10. Silveira, T. L. T. and Pasin, M.; Provimento de Informações sobre Transporte Público Urbano para Empresas Concessionárias: Simulação e Avaliação Apoiada por um Sistema Multi-agentes; Anais do IX Simpósio Brasileiro de Sistemas de Informação (SBSI); volume 1; p. 565-576; 2013. PDF BibTeX

  11. Silveira, T. L. T. and Pasin, M.; Aplicação de Algoritmos de Escalonamento de Processos para Gerenciamento de Interseções em VANETs; Anais da 11ª Escola Regional de Redes de Computadores (ERRC); volume 1; p. 39-42; 2013. PDF BibTeX

Conference short papers
  1. Silveira, T. L. T., Kozakevicius, A. J. and Rodrigues, C. R.; Awake/Sleep Scoring Through Wavelet Analysis Associated to Decision Tree Algorithms; Anais do 30º Simpósio Sul de Microeletrônica (SIM); 2015. PDF BibTeX

  2. Silveira, T. L. T., Bayer, F. M., Cintra, R. J. S. and Kozakevicius, A. J.; Algoritmos Rápidos para Cifragem de Imagens Utilizando Aproximações da DCT de Comprimento 8; Proceeding Series of the Brazilian Society of Applied and Computational Mathematics; volume 2; issue 1; 2014. DOI BibTeX

  3. Silveira, T. L. T., Rodrigues, C. R. and Kozakevicius, A. J.; Técnicas de Reamostragem de Sinais e seus Impactos no Processamento Digital nos Domínios do Tempo e da Frequência; Anais do Primer Encuentro de Jóvenes Investigadores en Matemática Aplicada de la Asociación de Universidades Grupo Montevideo (AUGM); p. 39-40; 2014. PDF BibTeX

  4. Silveira, T. L. T. and Pasin, M.; Aplicação de algoritmos de escalonamento de processos como proposta de solução para resolução de conflitos em cruzamentos de múltiplas vias de trânsito; Anais da 28ª Jornada Acadêmica Integrada da Universidade Federal de Santa Maria; 2013. PDF BibTeX

  5. Jacobi, O. F., Silveira, T. L. T. and Bayer, F. M.; Avaliação do impacto da ordem da DCT em compressão de imagens do tipo JPEG; Anais da 28ª Jornada Acadêmica Integrada da Universidade Federal de Santa Maria; 2013. PDF BibTeX

  6. Puhlmann, H. S. K., Silveira, T. L. T., Azevedo, B. R. and Augustin, I.; MedAlert; Anais da 26ª Jornada Acadêmica Integrada da Universidade Federal de Santa Maria; 2011. PDF BibTeX

Regular and software patents
  1. Silveira, T. L. T. and Jung, C. R.; SNICS: um método para supersegmentação de imagens esféricas; Instituto Nacional da Propriedade Industrial (INPI); BR512019002934-8; 2019. BibTeX

  2. Silveira, T. L. T. and Costa, J. A. T. B.; Método para Reconhecimento de Espectros de Raios X Característicos de Minerais; Instituto Nacional da Propriedade Industrial (INPI); BR512019000482-5; 2019. BibTeX

  3. Silveira, T. L. T., Bayer, F. M. and Cintra, R. J.; Método para o Cômputo Aproximado da Transformada Discreta do Cosseno de Comprimento 16 com Baixo Custo Aritmético em Aplicações de Compressão de Imagem e Vídeo; Instituto Nacional da Propriedade Industrial (INPI); BR1020150322720; 2015. BibTeX

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