Gustavo T. Pfeiffer

This page lists some of the research I did at the Computer Graphics Laboratory (LCG) of the Federal University of Rio de Janeiro (UFRJ), at the Applied Mathematics Laboratory (LABMA) of UFRJ, and at the Y. Sato Laboratory of the University of Tokyo.

Contact

• E-mail: gustavo_tp "at" poli.ufrj.br

Research

Stochastic Optimization

• G. T. Pfeiffer and Y. Sato. "On stochastic optimization methods for Monte Carlo least-squares problems." arXiv preprint arXiv:1804.10079, 2018. (code)

Vision-Based Interfaces

• G. Pfeiffer, R. Marroquim, and A. A. F. de Oliveira, "WebcamPaperPen: A low-cost graphics tablet," (presentation, video, suppl. material) in 27th SIBGRAPI - Conference on Graphics, Patterns and Images, 2014. pp. 87–94.
• See also: Graduation Project, 2014: dissertation, presentation
• See also: Project webpage with downloads and source code.

Physically-based Appearance Modeling

• G. Pfeiffer and R. Marroquim, "BRDF fitting using inverse global illumination and stochastic optimization," (revised version, poster) SIBGRAPI 2012 (XXV Conference on Graphics, Patterns and Images), 2012, Ouro Preto. Proceedings of the Workshop of Undergraduate Works (WUW), 2012. p. 29-34. (Awarded 3rd best paper of the Workshop of Undergraduate Works)

Probabilistic Analysis of Matching Problems

• Master thesis, 2015: Probabilistic Point Matching (dissertation, presentation)

Texture Registration

• R. Marroquim, G. Pfeiffer, F. Carvalho, and A. A. Oliveira, "Texturing 3D models from sequential photos," The Visual Computer, vol. 28, no. 10, pp. 983–993, 2012.
• R. Marroquim, G. Pfeiffer, F. Carvalho, and A. Oliveira, "Texturing 3D models with low geometric features," in 24th SIBGRAPI - Conference on Graphics, Patterns and Images, 2011. pp. 1–8.

History Matching (Petroleum Reservoir Engineering)

• F. Dickstein, P. Goldfeld, G. T. Pfeiffer, and R. V. Pinto, "Truncated conjugate gradient and improved LBFGS and TSVD for history matching," Computational Geosciences, vol. 22.1, pp. 309-327, 2018.
• F. Dickstein, P. Goldfeld, G. T. Pfeiffer, and R. V. Pinto. "Truncated Conjugate Gradient Method for History Matching in Reservoir Simulation," CNMAC 2016.
• F. Dickstein, P. Goldfeld, G. T. Pfeiffer, E. P. S. Amorim, R. W. dos Santos and S. G. Gómez, "A study of the impact of 4d-seismic data on TSVD-based schemes for history matching," in SPE Latin American and Caribbean Petroleum Engineering Conference. Society of Petroleum Engineers, 2010.