Current Positions
- Professor of Engineering (Professor Titular), UFPE
- CNPq Research Fellow in Engineering (Rank 1C)
- Associate Editor, Journal of Communication and Information Systems
Areas of Expertise
- Approximation Theory
- Low-complexity Algorithms
- Signal and Image Processing
- Probability and Random Processes
Approximation Theory
Since 2001, Dr R J Cintra has been developing algorithms and the theoretical background for low-complexity approximations in signal processing. He advised several theses on this topic, generating publications in leading journals.
His main contributions include:
the co-invention of the 32-point approximate discrete Fourier transform, in collaboration with his former student D. Villagrán (published in 2015), referred to as Villagrán-Cintra ADFT;
the invention of the 8-point discrete cosine transform approximation, known as rounded cosine transform (RDCT) (published in 2011), referred to as Cintra-Bayer DCT approximation;
the co-invention of large blocklength DFT approximations based on Cooley-Tukey and Good-Thomas (prime factor) algorithms;
the creation of a number of approximation methods for DCT, DFT, and discrete Tchebichef transform (DTT) dedicated to 1D, 2D, and 3D data.
Research Group
Scientific Societies
- Institute of Electrical and Electronics Engineers, IEEE (Senior member)
- Associação Brasileira de Estatística, ABE (Life member)
- Society for Industrial and Applied Mathematics, SIAM (Regular member)
Curriculum Vitae
- CV in pdf format (in English)
Mini bio
R. J. Cintra earned the Doutor degree in electrical engineering from the Universidade Federal de Pernambuco (UFPE), Recife, Brazil, where he holds a full professor position.
He has held visiting scholar appointments at the University of Akron, Ohio, USA; the Département Informatique, INSA Lyon, France; the INRIA/IRISA Lab, University of Rennes 1, France; the University of Calgary, Canada; and the Florida International University, Miami, USA.
He was a subject editor for IET Electronics Letters; and an associate editor for IEEE Geoscience Remote Sensing Letters; for IET Circuits, Devices & Systems; and for Springer Circuits, Systems, and Signal Processing. He currently serves as an associate editor for the Journal of Communication and Information Systems.
He has been working in the field of approximate transforms for 25 years, contributing with several methods and design techniques. His long-term topics of research include: approximation theory and low-complexity methods for digital signal and image processing, computationally efficient statistical algorithms, and probabilistic methods.
Editorial Boards
- 2016– Associate Editor, Journal of Communication and Information Systems 1 2
- 2018–2024 Subject Editor (Information and Communication), Electronics Letters 1 2 3 4 5 6
- 2017–2021 Associate Editor, IET Circuits, Devices & Systems
- 2013–2019 Associate Editor, IEEE Geoscience and Remote Sensing Letters
- 2015–2018 Associate Editor, Circuits, Systems, and Signal Processing (Springer)
Visiting Scholar
- Department of Electrical and Computer Engineering, Schulich School of Engineering, University of Calgary, Canada
- Département Informatique, Institut National des Sciences Appliquées, INSA, Lyon, France
- INRIA, Université de Rennes, France
- Department of Electrical and Computer Engineering, University of Akron, Ohio, USA
- Department of Electrical and Computer Engineering, Florida International University, Florida, USA