Renato J. Cintra

162 papers B 1C 9Misc 1Journal 147Unranked 4

Year	Rank	Type	Title / Venue / Authors
2026	J	`jnl`	Low-Complexity Approximations of the WECS Method for SAR Change Detection. IEEE Signal Process. Lett. Luan Portella, Renato J. Cintra, Aluísio Pinheiro
2026	J	`jnl`	Multiplierless DFT Approximation Based on the Prime Factor Algorithm. CoRR Luan Portella, Fábio M. Bayer, Renato J. Cintra
2025	C	`conf`	Analog-Digital Approximate DFT with Spatial ∆-Σ LNA Multi-beam RF Apertures. ISCAS Arjuna Madanayake, H. Pilippange, Keththura Lawrance, A. Uddin, S. Mandal, J. Di, M. Tennant, C. Workman, Renato J. Cintra
2025	C	`conf`	Area-Efficient FPGA Architectures for Multidimensional DCT using Approximate Transforms and Computing. ISCAS Pathmapirian Nanthakumar, Chamith Wijenayake, Chamira U. S. Edussooriya, Arjuna Madanayake, Renato J. Cintra
2025	C	`conf`	Low-Complexity Combined Approximate DFT and Adaptive Beamformer for Extremely Large Arrays. ISCAS Arjuna Madanayake, Umesha Kumarasiri, S. Sivasankar, Chamira U. S. Edussooriya, Renato J. Cintra, Chamith Wijenayake
2025	—	`conf`	Low-SWaP Spectrum Sensing across 32 GHz Bandwidth at D-Band using Maximally-Decimated Uniform Approximate DFT Polyphase FIR Filterbanks on Altera Stratix-10 AX Chiplets. MILCOM Michael Nilan, Buddhipriya Gayanath, Kasun Karunanayake, Arjuna Madanayake, Renato J. Cintra
2025	J	`jnl`	Multiplierless DFT Approximation Based on the Prime Factor Algorithm. IEEE Trans. Signal Process. Luan Portella, Fábio M. Bayer, Renato J. Cintra
2025	J	`jnl`	Real-Time 5.7-5.8 GHz 32-Beam Approximate Discrete Fourier Transform Spectrum Sensor for RF Perception on Xilinx Sx475T. IEEE Trans. Circuits Syst. I Regul. Pap. Arjuna Madanayake, Umesha Kumarasiri, Sivakumar Sivasankar, Keththura Lawrance, Buddhipriya Gayanath, Hiruni Silva, Soumyajit Mandal, Renato J. Cintra
2024	J	`jnl`	An Approximation for the 32-point Discrete Fourier Transform. CoRR Renato J. Cintra
2024	J	`jnl`	Design of Multichannel Spectrum Intelligence Systems Using Approximate Discrete Fourier Transform Algorithm for Antenna Array-Based Spectrum Perception Applications. Algorithms Arjuna Madanayake, Keththura Lawrance, Bopage Umesha Kumarasiri, Sivakumar Sivasankar, Thushara K. Gunaratne, Chamira U. S. Edussooriya, Renato J. Cintra
2024	J	`jnl`	Discrete Fourier Transform Approximations Based on the Cooley-Tukey Radix-2 Algorithm. CoRR Diego F. G. Coelho, Renato J. Cintra
2024	J	`jnl`	Extensions on low-complexity DCT approximations for larger blocklengths based on minimal angle similarity. CoRR Anabeth P. Radünz, Luan Portella, Raíza S. Oliveira, Fábio M. Bayer, Renato J. Cintra
2024	J	`jnl`	Fast Data-independent KLT Approximations Based on Integer Functions. CoRR Anabeth P. Radünz, Diego F. G. Coelho, Fábio M. Bayer, Renato J. Cintra, Arjuna Madanayake
2024	J	`jnl`	Fast data-independent KLT approximations based on integer functions. Multim. Tools Appl. Anabeth P. Radünz, Diego F. G. Coelho, Fábio M. Bayer, Renato J. Cintra, Arjuna Madanayake
2024	J	`jnl`	Gaussian Kernel Approximations Require Only Bit-Shifts. Inf. Renato J. Cintra, Paulo Martinez, André Leite, Vítor de A. Coutinho, Fábio M. Bayer, Arjuna Madanayake, Diego F. G. Coelho
2024	—	`conf`	Real-time 5.7 GHz Realization of Multidimensional 2D Hybrid Approximate DFT Spectrum Sensors for RF Situational Awareness. MWSCAS Arjuna Madanayake, Keththura Lawrance, Sivakumar Sivasankar, Umesha Kumarasiri, Buddhipriya Gayanath, Renato J. Cintra, Soumyajit Mandal
2023	J	`jnl`	An Iterative Wavelet Threshold for Signal Denoising. CoRR Fábio M. Bayer, Alice J. Kozakevicius, Renato J. Cintra
2023	J	`jnl`	Analog Current-Mode 8-Point Approximate-DFT Multi-Beamformer With 4.7 Gbps Channel Capacity. IEEE Access Haixiang Zhao, Arjuna Madanayake, Renato J. Cintra, Soumyajit Mandal
2023	J	`jnl`	Extensions on Low-Complexity DCT Approximations for Larger Blocklengths Based on Minimal Angle Similarity. J. Signal Process. Syst. Anabeth P. Radünz, Luan Portella, Raíza S. Oliveira, Fábio M. Bayer, Renato J. Cintra
2023	J	`jnl`	Low-complexity Multidimensional DCT Approximations. CoRR Vítor de A. Coutinho, Renato J. Cintra, Fábio M. Bayer
2023	J	`jnl`	Prediction intervals in the beta autoregressive moving average model. Commun. Stat. Simul. Comput. Bruna Gregory Palm, Fábio M. Bayer, Renato J. Cintra
2022	J	`jnl`	2-D Rayleigh autoregressive moving average model for SAR image modeling. Comput. Stat. Data Anal. Bruna Gregory Palm, Fábio M. Bayer, Renato J. Cintra
2022	J	`jnl`	A Class of Low-Complexity DCT-Like Transforms for Image and Video Coding. IEEE Trans. Circuits Syst. Video Technol. Thiago L. T. da Silveira, Diego Ramos Canterle, Diego F. G. Coelho, Vítor de A. Coutinho, Fábio M. Bayer, Renato J. Cintra
2022	J	`jnl`	A Class of Low-complexity DCT-like Transforms for Image and Video Coding. CoRR Thiago L. T. da Silveira, Diego Ramos Canterle, Diego F. G. Coelho, Vítor de A. Coutinho, Fábio M. Bayer, Renato J. Cintra
2022	J	`jnl`	Autoregressive Model for Multi-Pass SAR Change Detection Based on Image Stacks. CoRR Bruna Gregory Palm, Dimas Irion Alves, Viet Thuy Vu, Mats I. Pettersson, Fábio M. Bayer, Renato J. Cintra, Renato B. Machado, Patrik B. G. Dammert, Hans Hellsten
2022	J	`jnl`	Block-Parallel Systolic-Array Architecture for 2-D NTT-based Fragile Watermark Embedding. CoRR Arjuna Madanayake, Renato J. Cintra, Vassil S. Dimitrov, Leonard T. Bruton
2022	J	`jnl`	DCT Approximations Based on Chen's Factorization. CoRR C. J. Tablada, Thiago L. T. da Silveira, Renato J. Cintra, Fábio M. Bayer
2022	J	`jnl`	Data-independent low-complexity KLT approximations for image and video coding. Signal Process. Image Commun. Anabeth P. Radünz, Thiago L. T. da Silveira, Fábio M. Bayer, Renato J. Cintra
2022	J	`jnl`	Efficient and Self-Recursive Delay Vandermonde Algorithm for Multi-Beam Antenna Arrays. CoRR Sirani M. Perera, Arjuna Madanayake, Renato J. Cintra
2022	J	`jnl`	Fast Radix-32 Approximate DFTs for 1024-Beam Digital RF Beamforming. CoRR Arjuna Madanayake, Renato J. Cintra, Najath Akram, Viduneth Ariyarathna, Soumyajit Mandal, Vítor de A. Coutinho, Fábio M. Bayer, Diego F. G. Coelho, Theodore S. Rappaport
2022	J	`jnl`	Improved Point Estimation for the Rayleigh Regression Model. CoRR Bruna Gregory Palm, Fábio M. Bayer, Renato J. Cintra
2022	J	`jnl`	Improved Point Estimation for the Rayleigh Regression Model. IEEE Geosci. Remote. Sens. Lett. Bruna Gregory Palm, Fábio M. Bayer, Renato J. Cintra
2022	J	`jnl`	Low-Complexity Loeffler DCT Approximations for Image and Video Coding. CoRR Diego F. G. Coelho, Renato J. Cintra, Fábio M. Bayer, Sunera Kulasekera, Arjuna Madanayake, P. A. C. Martinez, Thiago L. T. da Silveira, Raíza S. Oliveira, Vassil S. Dimitrov
2022	J	`jnl`	Low-complexity Approximate Convolutional Neural Networks. CoRR Renato J. Cintra, Stefan Duffner, Christophe Garcia, André Leite
2022	J	`jnl`	Low-complexity Three-dimensional Discrete Hartley Transform Approximations for Medical Image Compression. CoRR Vítor de A. Coutinho, Fábio M. Bayer, Renato J. Cintra
2022	J	`jnl`	Low-complexity rounded KLT approximation for image compression. J. Real Time Image Process. Anabeth P. Radünz, Fábio M. Bayer, Renato J. Cintra
2022	J	`jnl`	Prediction Intervals in the Beta Autoregressive Moving Average Model. CoRR Bruna Gregory Palm, Fábio M. Bayer, Renato J. Cintra
2022	J	`jnl`	Radix-$N$ Algorithm for Computing $N^{2^{n}}$-Point DFT Approximations. IEEE Signal Process. Lett. Luan Portella, Diego F. G. Coelho, Fábio M. Bayer, Arjuna Madanayake, Renato J. Cintra
2022	J	`jnl`	Radix-2 Self-Recursive Sparse Factorizations of Delay Vandermonde Matrices for Wideband Multi-Beam Antenna Arrays. CoRR Sirani M. Perera, Arjuna Madanayake, Renato J. Cintra
2022	J	`jnl`	Robust Rayleigh Regression Method for SAR Image Processing in Presence of Outliers. CoRR Bruna Gregory Palm, Fábio Mariano Bayer, Renato B. Machado, Mats I. Pettersson, Viet Thuy Vu, Renato J. Cintra
2022	J	`jnl`	Robust Rayleigh Regression Method for SAR Image Processing in Presence of Outliers. IEEE Trans. Geosci. Remote. Sens. Bruna Gregory Palm, Fábio M. Bayer, Renato B. Machado, Mats I. Pettersson, Viet Thuy Vu, Renato J. Cintra
2022	J	`jnl`	The Gamma Generalized Normal Distribution: A Descriptor of SAR Imagery. CoRR Gauss M. Cordeiro, Renato J. Cintra, Leandro Chaves Rêgo, Abraao D. C. Nascimento
2022	J	`jnl`	Towards a Low-SWaP 1024-beam Digital Array: A 32-beam Sub-system at 5.8 GHz. CoRR Arjuna Madanayake, Viduneth Ariyarathna, Suresh Madishetty, Sravan Kumar Pulipati, Renato J. Cintra, Diego F. G. Coelho, Raíza Oliveira, Fábio M. Bayer, Leonid Belostotski, Soumyajit Mandal, Theodore S. Rappaport
2021	J	`jnl`	Data-independent Low-complexity KLT Approximations for Image and Video Coding. CoRR Anabeth P. Radünz, Thiago L. T. da Silveira, Fábio M. Bayer, Renato J. Cintra
2021	J	`jnl`	Geometrical Representation for Number-theoretic Transforms. CoRR Hélio M. de Oliveira, Renato J. Cintra
2021	J	`jnl`	Low-Complexity Scaling Methodsfor DCT-II Approximations. IEEE Trans. Signal Process. Diego F. G. Coelho, Renato J. Cintra, Arjuna Madanayake, Sirani M. Perera
2021	J	`jnl`	Low-complexity Rounded KLT Approximation for Image Compression. CoRR Anabeth P. Radünz, Fábio M. Bayer, Renato J. Cintra
2021	J	`jnl`	Low-complexity Scaling Methods for DCT-II Approximations. CoRR Diego F. G. Coelho, Renato J. Cintra, Arjuna Madanayake, Sirani M. Perera
2021	J	`jnl`	Low-complexity three-dimensional discrete Hartley transform approximations for medical image compression. Comput. Biol. Medicine Vítor de A. Coutinho, Renato J. Cintra, Fábio M. Bayer
2021	J	`jnl`	Signal detection and inference based on the beta binomial autoregressive moving average model. Digit. Signal Process. Bruna Gregory Palm, Fábio M. Bayer, Renato J. Cintra
2020	J	`jnl`	A Low-SWaP 16-Beam 2.4 GHz Digital Phased Array Receiver Using DFT Approximation. IEEE Trans. Aerosp. Electron. Syst. Vítor de A. Coutinho, Viduneth Ariyarathna, Diego F. G. Coelho, Sravan Kumar Pulipati, Renato J. Cintra, Arjuna Madanayake, Fábio M. Bayer, Vassil S. Dimitrov
2020	J	`jnl`	A Multiparametric Class of Low-complexity Transforms for Image and Video Coding. CoRR Diego Ramos Canterle, Thiago L. T. da Silveira, Fábio M. Bayer, Renato J. Cintra
2020	J	`jnl`	A Multiparametric Class of Low-complexity Transforms for Image and Video Coding. Signal Process. Diego Ramos Canterle, Thiago L. T. da Silveira, Fábio M. Bayer, Renato J. Cintra
2020	J	`jnl`	An Integer Approximation Method for Discrete Sinusoidal Transforms. CoRR Renato J. Cintra
2020	J	`jnl`	Fast Radix-32 Approximate DFTs for 1024-Beam Digital RF Beamforming. IEEE Access Arjuna Madanayake, Renato J. Cintra, Najath Akram, Viduneth Ariyarathna, Soumyajit Mandal, Vítor de A. Coutinho, Fábio M. Bayer, Diego F. G. Coelho, Theodore S. Rappaport
2020	C	`conf`	Low-Complexity Real-Time Light Field Compression using 4-D Approximate DCT. ISCAS Namalka Liyanage, Chamith Wijenayake, Chamira U. S. Edussooriya, Arjuna Madanayake, Renato J. Cintra, Eliathamby Ambikairajah
2020	J	`jnl`	Low-complexity Architecture for AR(1) Inference. CoRR A. Borges Jr., Renato J. Cintra, Diego F. G. Coelho, Vassil S. Dimitrov
2020	J	`jnl`	Multi-dimensional wavelets for scalable image decomposition: Orbital wavelets. Int. J. Wavelets Multiresolution Inf. Process. Hélio M. de Oliveira, Victor Vermehren Valenzuela, Renato J. Cintra
2020	J	`jnl`	Multidimensional Wavelets for Scalable Image Decomposition: Orbital Wavelets. CoRR Hélio M. de Oliveira, Victor Vermehren Valenzuela, Renato J. Cintra
2020	J	`jnl`	Radix-2 Self-Recursive Sparse Factorizations of Delay Vandermonde Matrices for Wideband Multi-Beam Antenna Arrays. IEEE Access Sirani M. Perera, Arjuna Madanayake, Renato J. Cintra
2020	J	`jnl`	Rounded Hartley Transform: A Quasi-involution. CoRR Renato J. Cintra, Hélio M. de Oliveira, C. O. Cintra
2020	J	`jnl`	The compound truncated Poisson Cauchy model: A descriptor for multimodal data. J. Comput. Appl. Math. Josimar M. Vasconcelos, Renato J. Cintra, Abraão David Costa do Nascimento, Leandro Chaves Rêgo
2020	J	`jnl`	Wavelength-Resolution SAR Ground Scene Prediction Based on Image Stack. Sensors Bruna Gregory Palm, Dimas Irion Alves, Mats I. Pettersson, Viet Thuy Vu, Renato B. Machado, Renato J. Cintra, Fábio M. Bayer, Patrik B. G. Dammert, Hans Hellsten
2019	J	`jnl`	An iterative wavelet threshold for signal denoising. Signal Process. Fábio M. Bayer, Alice J. Kozakevicius, Renato J. Cintra
2019	J	`jnl`	Detecting Changes in Fully Polarimetric SAR Imagery With Statistical Information Theory. IEEE Trans. Geosci. Remote. Sens. Abraao D. C. Nascimento, Alejandro C. Frery, Renato J. Cintra
2019	J	`jnl`	Low-complexity 8-point DCT approximation based on angle similarity for image and video coding. Multidimens. Syst. Signal Process. Raíza S. Oliveira, Renato J. Cintra, Fábio M. Bayer, Thiago L. T. da Silveira, Arjuna Madanayake, André Leite
2019	J	`jnl`	Rayleigh Regression Model for Ground Type Detection in SAR Imagery. IEEE Geosci. Remote. Sens. Lett. Bruna Gregory Palm, Fábio M. Bayer, Renato J. Cintra, Mats I. Pettersson, Renato B. Machado
2019	J	`jnl`	The gamma generalized normal distribution: A descriptor of SAR imagery. J. Comput. Appl. Math. Gauss M. Cordeiro, Renato J. Cintra, Leandro Chaves Rêgo, Abraão David Costa do Nascimento
2018	J	`jnl`	A New Algorithm for Double Scalar Multiplication over Koblitz Curves. CoRR Jithra Adikari, Vassil S. Dimitrov, Renato J. Cintra
2018	C	`conf`	An Offset-Canceling Approximate-DFT Beamforming Architecture for Wireless Transceivers. ISCAS Haixiang Zhao, Soumyajit Mandal, Viduneth Ariyarathna, Arjuna Madanayake, Renato J. Cintra
2018	J	`jnl`	Analog Approximate-FFT 8/16-Beam Algorithms, Architectures and CMOS Circuits for 5G Beamforming MIMO Transceivers. IEEE J. Emerg. Sel. Topics Circuits Syst. Viduneth Ariyarathna, Arjuna Madanayake, Xinyao Tang, Diego F. G. Coelho, Renato J. Cintra, Leonid Belostotski, Soumyajit Mandal, Theodore S. Rappaport
2018	J	`jnl`	Computation of 2D 8×8 DCT Based on the Loeffler Factorization Using Algebraic Integer Encoding. IEEE Trans. Computers Diego F. G. Coelho, Sushmabhargavi Nimmalapalli, Vassil S. Dimitrov, Arjuna Madanayake, Renato J. Cintra, Arnaud Tisserand
2018	J	`jnl`	Detecting Changes in Fully Polarimetric SAR Imagery with Statistical Information Theory. CoRR Abraão David Costa do Nascimento, Alejandro C. Frery, Renato J. Cintra
2018	J	`jnl`	Efficient Computation of the 8-point DCT via Summation by Parts. CoRR Diego F. G. Coelho, Renato J. Cintra, Vassil S. Dimitrov
2018	J	`jnl`	Efficient Computation of the 8-point DCT via Summation by Parts. J. Signal Process. Syst. Diego F. G. Coelho, Renato J. Cintra, Vassil S. Dimitrov
2018	J	`jnl`	Fast Matrix Inversion and Determinant Computation for Polarimetric Synthetic Aperture Radar. CoRR Diego F. G. Coelho, Renato J. Cintra, Alejandro C. Frery, Vassil S. Dimitrov
2018	J	`jnl`	Fast matrix inversion and determinant computation for Polarimetric Synthetic Aperture Radar. Comput. Geosci. Diego F. G. Coelho, Renato J. Cintra, Alejandro César Frery, Vassil S. Dimitrov
2018	J	`jnl`	Low-Complexity Approximate Convolutional Neural Networks. IEEE Trans. Neural Networks Learn. Syst. Renato J. Cintra, Stefan Duffner, Christophe Garcia, André Leite
2018	J	`jnl`	Low-complexity 8-point DCT Approximation Based on Angle Similarity for Image and Video Coding. CoRR Raíza S. Oliveira, Renato J. Cintra, Fábio M. Bayer, Thiago L. T. da Silveira, Arjuna Madanayake, André Leite
2018	J	`jnl`	Pruned Discrete Tchebichef Transform Approximation for Image Compression. Circuits Syst. Signal Process. Vítor de A. Coutinho, Renato J. Cintra, Fábio M. Bayer, Paulo A. M. Oliveira, Raíza S. Oliveira, Arjuna Madanayake
2018	J	`jnl`	Wideband N-Beam Arrays Using Low-Complexity Algorithms and Mixed-Signal Integrated Circuits. IEEE J. Sel. Top. Signal Process. Sirani M. Perera, Viduneth Ariyarathna, Nilan Udayanga, Arjuna Madanayake, Ge Wu, Leonid Belostotski, Yingying Wang, Soumyajit Mandal, Renato J. Cintra, Theodore S. Rappaport
2017	J	`jnl`	A Digital Hardware Fast Algorithm and FPGA-based Prototype for a Novel 16-point Approximate DCT for Image Compression Applications. CoRR Fábio M. Bayer, Renato J. Cintra, Amila Edirisuriya, Arjuna Madanayake
2017	C	`conf`	A Parallel Method for the Computation of Matrix Exponential Based on Truncated Neumann Series. ARITH Vassil S. Dimitrov, Viduneth Ariyarathna, Diego F. G. Coelho, Logan Rakai, Arjuna Madanayake, Renato J. Cintra
2017	J	`jnl`	A Single-Channel Architecture for Algebraic Integer Based 8×8 2-D DCT Computation. CoRR Amila Edirisuriya, Arjuna Madanayake, Renato J. Cintra, Vassil S. Dimitrov
2017	J	`jnl`	Comments on 'Area and power efficient DCT architecture for image compression' by Dhandapani and Ramachandran. EURASIP J. Adv. Signal Process. Renato J. Cintra, Fábio M. Bayer
2017	J	`jnl`	DCT approximations based on Chen's factorization. Signal Process. Image Commun. C. J. Tablada, Thiago Lopes Trugillo da Silveira, Renato J. Cintra, Fábio M. Bayer
2017	J	`jnl`	DCT-like Transform for Image Compression Requires 14 Additions Only. CoRR Fábio M. Bayer, Renato J. Cintra
2017	J	`jnl`	DFT Computation Using Gauss-Eisenstein Basis: FFT Algorithms and VLSI Architectures. IEEE Trans. Computers Diego F. G. Coelho, Renato J. Cintra, Nilanka T. Rajapaksha, Gihan J. Mendis, Arjuna Madanayake, Vassil S. Dimitrov
2017	—	`conf`	Design of a low-complexity wideband analog true-time-delay 5-beam array in 65nm CMOS. MWSCAS Arjuna Madanayake, Viduneth Ariyarathna, Nilan Udayanga, Leonid Belostotski, Sirani M. Perera, Renato J. Cintra
2017	J	`jnl`	Fast Algorithms and Architectures for 8-Point DST-II/DST-VII Approximations. J. Circuits Syst. Comput. Renato J. Cintra, Fábio M. Bayer, Arjuna Madanayake, Uma Sadhvi Potluri, Amila Edirisuriya
2017	J	`jnl`	Low-Complexity Image and Video Coding Based on an Approximate Discrete Tchebichef Transform. IEEE Trans. Circuits Syst. Video Technol. Paulo A. M. Oliveira, Renato J. Cintra, Fábio M. Bayer, Sunera Kulasekera, Arjuna Madanayake
2017	J	`jnl`	Low-Complexity Multidimensional DCT Approximations for High-Order Tensor Data Decorrelation. IEEE Trans. Image Process. Vítor de A. Coutinho, Renato J. Cintra, Fábio M. Bayer
2017	J	`jnl`	Multiplierless 16-point DCT approximation for low-complexity image and video coding. Signal Image Video Process. Thiago Lopes Trugillo da Silveira, Raíza S. Oliveira, Fábio M. Bayer, Renato J. Cintra, Arjuna Madanayake
2017	J	`jnl`	Multiuser Communication Based on the DFT Eigenstructure. CoRR Ricardo M. Campello de Souza, Hélio M. de Oliveira, Renato J. Cintra
2017	J	`jnl`	VLSI Computational Architectures for the Arithmetic Cosine Transform. CoRR Nilanka T. Rajapaksha, Arjuna Madanayake, Renato J. Cintra, Jithra Adikari, Vassil S. Dimitrov
2016	J	`jnl`	A Generalized Prefix Construction for OFDM Systems Over Quasi-Static Channels. CoRR Todor Cooklev, Hakan Dogan, Renato J. Cintra, Hakan Yildiz
2016	J	`jnl`	A New Information Theoretical Concept: Information-Weighted Heavy-tailed Distributions. CoRR Hélio M. de Oliveira, Renato J. Cintra
2016	J	`jnl`	A multiplierless pruned DCT-like transformation for image and video compression that requires ten additions only. J. Real Time Image Process. Vítor de A. Coutinho, Renato J. Cintra, Fábio M. Bayer, Sunera Kulasekera, Arjuna Madanayake
2016	J	`jnl`	An Orthogonal 16-point Approximate DCT for Image and Video Compression. CoRR Thiago Lopes Trugillo da Silveira, Fábio M. Bayer, Renato J. Cintra, Sunera Kulasekera, Arjuna Madanayake, Alice J. Kozakevicius
2016	J	`jnl`	An orthogonal 16-point approximate DCT for image and video compression. Multidimens. Syst. Signal Process. Thiago L. T. da Silveira, Fábio M. Bayer, Renato J. Cintra, Sunera Kulasekera, Arjuna Madanayake, Alice J. Kozakevicius
2016	J	`jnl`	Energy-Efficient 8-Point DCT Approximations: Theory and Hardware Architectures. Circuits Syst. Signal Process. Renato J. Cintra, Fábio M. Bayer, Vítor de A. Coutinho, Sunera Kulasekera, Arjuna Madanayake, André Leite
2016	J	`jnl`	Energy-efficient 8-point DCT Approximations: Theory and Hardware Architectures. CoRR Renato J. Cintra, Fábio M. Bayer, Vítor de A. Coutinho, Sunera Kulasekera, Arjuna Madanayake
2016	J	`jnl`	Error-free computation of 8-point discrete cosine transform based on the Loeffler factorisation and algebraic integers. IET Signal Process. Diego F. G. Coelho, Renato J. Cintra, Sunera Kulasekera, Arjuna Madanayake, Vassil S. Dimitrov
2016	J	`jnl`	Low-complexity Image and Video Coding Based on an Approximate Discrete Tchebichef Transform. CoRR Paulo A. M. Oliveira, Renato J. Cintra, Fábio M. Bayer, Sunera Kulasekera, Arjuna Madanayake
2016	J	`jnl`	Low-complexity Pruned 8-point DCT Approximations for Image Encoding. CoRR Vítor de A. Coutinho, Renato J. Cintra, Fábio M. Bayer, Sunera Kulasekera, Arjuna Madanayake
2016	J	`jnl`	Multiplierless 16-point DCT Approximation for Low-complexity Image and Video Coding. CoRR Thiago Lopes Trugillo da Silveira, Raíza S. Oliveira, Fábio M. Bayer, Renato J. Cintra, Arjuna Madanayake
2016	J	`jnl`	Robust Image Watermarking Using Non-Regular Wavelets. CoRR Renato J. Cintra, Todor V. Cooklev
2015	J	`jnl`	A Class of DCT Approximations Based on the Feig-Winograd Algorithm. CoRR C. J. Tablada, Fábio M. Bayer, Renato J. Cintra
2015	J	`jnl`	A Discrete Tchebichef Transform Approximation for Image and Video Coding. CoRR Paulo A. M. Oliveira, Renato J. Cintra, Fábio M. Bayer, Sunera Kulasekera, Arjuna Madanayake
2015	J	`jnl`	A Discrete Tchebichef Transform Approximation for Image and Video Coding. IEEE Signal Process. Lett. Paulo A. M. Oliveira, Renato J. Cintra, Fábio M. Bayer, Sunera Kulasekera, Arjuna Madanayake
2015	J	`jnl`	A Factorization Scheme for Some Discrete Hartley Transform Matrices. CoRR Hélio M. de Oliveira, Renato J. Cintra, Ricardo M. Campello de Souza
2015	J	`jnl`	A Row-parallel 8×8 2-D DCT Architecture Using Algebraic Integer Based Exact Computation. CoRR Arjuna Madanayake, Renato J. Cintra, Denis Onen, Vassil S. Dimitrov, Nilanka T. Rajapaksha, Leonard T. Bruton, Amila Edirisuriya
2015	J	`jnl`	A Short Survey on Arithmetic Transforms and the Arithmetic Hartley Transform. CoRR Renato J. Cintra, Hélio M. de Oliveira
2015	J	`jnl`	A class of DCT approximations based on the Feig-Winograd algorithm. Signal Process. C. J. Tablada, Fábio M. Bayer, Renato J. Cintra
2015	J	`jnl`	An Extension of the Dirichlet Density for Sets of Gaussian Integers. CoRR Leandro Chaves Rêgo, Renato J. Cintra
2015	J	`jnl`	Elliptic-cylindrical Wavelets: The Mathieu Wavelets. CoRR M. M. S. Lira, Hélio M. de Oliveira, Renato J. Cintra
2015	J	`jnl`	Fast Finite Field Hartley Transforms Based on Hadamard Decomposition. CoRR Hélio M. de Oliveira, R. G. F. Távora, Renato J. Cintra, Ricardo M. Campello de Souza
2015	J	`jnl`	Fast computation of residual complexity image similarity metric using low-complexity transforms. IET Image Process. Yves Pauchard, Renato J. Cintra, Arjuna Madanayake, Fábio M. Bayer
2015	J	`jnl`	Fragile Watermarking Using Finite Field Trigonometrical Transforms. CoRR Renato J. Cintra, Vassil S. Dimitrov, Hélio M. de Oliveira, Ricardo M. Campello de Souza
2015	J	`jnl`	Improved 8-point Approximate DCT for Image and Video Compression Requiring Only 14 Additions. CoRR Uma Sadhvi Potluri, Arjuna Madanayake, Renato J. Cintra, Fábio M. Bayer, Sunera Kulasekera, Amila Edirisuriya
2015	—	`conf`	Low-complexity pruned 8-point DCT approximations for image encoding. CONIELECOMP Vítor de A. Coutinho, Renato J. Cintra, Fábio M. Bayer, Sunera Kulasekera, Arjuna Madanayake
2015	J	`jnl`	Multi-Beam RF Aperture Using Multiplierless FFT Approximation. CoRR Dora Suarez, Renato J. Cintra, Fábio M. Bayer, Arindam Sengupta, Sunera Kulasekera, Arjuna Madanayake
2015	J	`jnl`	Multi-beam 4 GHz Microwave Apertures Using Current-Mode DFT Approximation on 65 nm CMOS. CoRR Viduneth Ariyarathna, Sunera Kulasekera, Arjuna Madanayake, Dora Suarez, Renato J. Cintra, Fábio M. Bayer, Leonid Belostotski
2015	J	`jnl`	Multilayer Hadamard Decomposition of Discrete Hartley Transforms. CoRR Hélio M. de Oliveira, Renato J. Cintra, Ricardo M. Campello de Souza
2015	J	`jnl`	The Arithmetic Cosine Transform: Exact and Approximate Algorithms. CoRR Renato J. Cintra, Vassil S. Dimitrov
2015	J	`jnl`	VLSI Computational Architectures for the Arithmetic Cosine Transform. IEEE Trans. Computers Nilanka T. Rajapaksha, Arjuna Madanayake, Renato J. Cintra, Jithra Adikari, Vassil S. Dimitrov
2015	J	`jnl`	VLSI architecture for 4-D depth filtering. Signal Image Video Process. Arjuna Madanayake, Randeel Wimalagunarathne, Donald G. Dansereau, Renato J. Cintra, Len T. Bruton
2015	J	`jnl`	Wavelets for Elliptical Waveguide Problems. CoRR M. M. S. Lira, Hélio M. de Oliveira, Renato J. Cintra, Ricardo M. Campello de Souza
2014	J	`jnl`	A DCT Approximation for Image Compression. CoRR Renato J. Cintra, Fábio M. Bayer
2014	J	`jnl`	Algebraic integer architecture with minimum adder count for the 2-D Daubechies 4-tap filters banks. Multidimens. Syst. Signal Process. Shiva Kumar Madishetty, Arjuna Madanayake, Renato J. Cintra, Vassil S. Dimitrov, Dale H. Mugler
2014	J	`jnl`	Analytic Expressions for Stochastic Distances Between Relaxed Complex Wishart Distributions. IEEE Trans. Geosci. Remote. Sens. Alejandro César Frery, Abraao D. C. Nascimento, Renato J. Cintra
2014	J	`jnl`	Bias Correction and Modified Profile Likelihood Under the Wishart Complex Distribution. IEEE Trans. Geosci. Remote. Sens. Abraao D. C. Nascimento, Alejandro César Frery, Renato J. Cintra
2014	J	`jnl`	Bias Correction and Modified Profile Likelihood under the Wishart Complex Distribution. CoRR Abraão David Costa do Nascimento, Alejandro César Frery, Renato J. Cintra
2014	J	`jnl`	Comparing Edge Detection Methods Based on Stochastic Entropies and Distances for PolSAR Imagery. IEEE J. Sel. Top. Appl. Earth Obs. Remote. Sens. Abraão David Costa do Nascimento, Michelle Matos Horta, Alejandro C. Frery, Renato J. Cintra
2014	J	`jnl`	DCT-like Transform for Image and Video Compression Requires 10 Additions Only. CoRR Renato J. Cintra, Fábio M. Bayer, Vítor de A. Coutinho, Sunera Kulasekera, Arjuna Madanayake
2014	J	`jnl`	Improved 8-Point Approximate DCT for Image and Video Compression Requiring Only 14 Additions. IEEE Trans. Circuits Syst. I Regul. Pap. Uma Sadhvi Potluri, Arjuna Madanayake, Renato J. Cintra, Fábio M. Bayer, Sunera Kulasekera, Amila Edirisuriya
2014	J	`jnl`	Low-complexity 8-point DCT approximations based on integer functions. Signal Process. Renato J. Cintra, Fábio M. Bayer, C. J. Tablada
2014	J	`jnl`	Multiplierless Approximate 4-point DCT VLSI Architectures for Transform Block Coding. CoRR Fábio M. Bayer, Renato J. Cintra, Arjuna Madanayake, Uma Sadhvi Potluri
2014	J	`jnl`	Precise VLSI Architecture for AI Based 1-D/ 2-D Daub-6 Wavelet Filter Banks With Low Adder-Count. IEEE Trans. Circuits Syst. I Regul. Pap. Shiva Kumar Madishetty, Arjuna Madanayake, Renato J. Cintra, Vassil S. Dimitrov
2013	J	`jnl`	A Single-Channel Architecture for Algebraic Integer-Based 8 × 8 2-D DCT Computation. IEEE Trans. Circuits Syst. Video Technol. Amila Edirisuriya, Arjuna Madanayake, Renato J. Cintra, Vassil S. Dimitrov, Nilanka T. Rajapaksha
2013	J	`jnl`	Asynchronous Realization of Algebraic Integer-Based 2D DCT Using Achronix Speedster SPD60 FPGA. J. Electr. Comput. Eng. Nilanka T. Rajapaksha, Amila Edirisuriya, Arjuna Madanayake, Renato J. Cintra, Denis Onen, Ihab Amer, Vassil S. Dimitrov
2013	J	`jnl`	Comparing Edge Detection Methods based on Stochastic Entropies and Distances for PolSAR Imagery. CoRR Abraão David Costa do Nascimento, Michelle Matos Horta, Alejandro César Frery, Renato J. Cintra
2013	J	`jnl`	Entropy-Based Statistical Analysis of PolSAR Data. IEEE Trans. Geosci. Remote. Sens. Alejandro César Frery, Renato J. Cintra, Abraao D. C. Nascimento
2013	J	`jnl`	Parametric and nonparametric tests for speckled imagery. Pattern Anal. Appl. Renato J. Cintra, Alejandro César Frery, Abraão David Costa do Nascimento
2013	J	`jnl`	VLSI Architectures for the 4-Tap and 6-Tap 2-D Daubechies Wavelet Filters Using Algebraic Integers. IEEE Trans. Circuits Syst. I Regul. Pap. Shiva Kumar Madishetty, Arjuna Madanayake, Renato J. Cintra, Vassil S. Dimitrov, Dale H. Mugler
2012	J	`jnl`	A Row-Parallel 8 × 8 2-D DCT Architecture Using Algebraic Integer-Based Exact Computation. IEEE Trans. Circuits Syst. Video Technol. Arjuna Madanayake, Renato J. Cintra, Denis Onen, Vassil S. Dimitrov, Nilanka T. Rajapaksha, Leonard T. Bruton, Amila Edirisuriya
2012	J	`jnl`	Block-Parallel Systolic-Array Architecture for 2-d NTT-Based Fragile Watermark Embedding. Parallel Process. Lett. Arjuna Madanayake, Renato J. Cintra, Vassil S. Dimitrov, Leonard T. Bruton
2012	C	`conf`	Error-free VLSI architecture for the 2-D Daubechies 4-tap filter using algebraic integers. ISCAS Shiva Madishetty, Arjuna Madanayake, Renato J. Cintra, Dale H. Mugler, Vassil S. Dimitrov
2012	J	`jnl`	Hypothesis Testing in Speckled Data with Stochastic Distances CoRR Abraao D. C. Nascimento, Renato J. Cintra, Alejandro César Frery
2012	J	`jnl`	Parametric and Nonparametric Tests for Speckled Imagery CoRR Renato J. Cintra, Abraao D. C. Nascimento, Alejandro César Frery
2011	J	`jnl`	A DCT Approximation for Image Compression. IEEE Signal Process. Lett. Renato J. Cintra, Fábio M. Bayer
2011	J	`jnl`	A Generalized Prefix Construction for OFDM Systems Over Quasi-Static Channels. IEEE Trans. Veh. Technol. Todor V. Cooklev, Hakan Dogan, Renato J. Cintra, Hakan Yildiz
2011	C	`conf`	A new algorithm for double scalar multiplication over Koblitz curves. ISCAS Jithra Adikari, Vassil S. Dimitrov, Renato J. Cintra
2011	C	`conf`	Algebraic integer based 8×8 2-D DCT architecture for digital video processing. ISCAS Arjuna Madanayake, Renato J. Cintra, Denis Onen, Vassil S. Dimitrov, Leonard T. Bruton
2011	J	`jnl`	An Integer Approximation Method for Discrete Sinusoidal Transforms. Circuits Syst. Signal Process. Renato J. Cintra
2010	B	`conf`	Contrast in speckled imagery with stochastic distances. ICIP Alejandro César Frery, Abraao D. C. Nascimento, Renato J. Cintra
2010	J	`jnl`	Hypothesis Testing in Speckled Data With Stochastic Distances. IEEE Trans. Geosci. Remote. Sens. Abraao D. C. Nascimento, Renato J. Cintra, Alejandro César Frery
2010	J	`jnl`	The arithmetic cosine transform: exact and approximate algorithms. IEEE Trans. Signal Process. Renato J. Cintra, Vassil S. Dimitrov
2009	J	`jnl`	Fragile watermarking using finite field trigonometrical transforms. Signal Process. Image Commun. Renato J. Cintra, Vassil S. Dimitrov, Hélio M. de Oliveira, Ricardo M. Campello de Souza
2009	J	`jnl`	Robust image watermarking using non-regular wavelets. Signal Image Video Process. Renato J. Cintra, Todor V. Cooklev
2004	J	`jnl`	Elliptic-cylindrical wavelets: the Mathieu wavelets. IEEE Signal Process. Lett. M. M. S. Lira, Hélio Magalhães de Oliveira, Renato J. Cintra
2002	Misc	`conf`	How to interpolate in arithmetic transform algorithms. ICASSP Renato J. Cintra, Hélio M. de Oliveira