163 citations · 1.5k across the 72 of their papers we have counts for
5 papers · 1 filter
Low-complexity 8-point DCT Approximation Based on Angle Similarity for Image and Video Coding
R. S. Oliveira, R. J. Cintra, F. M. Bayer +3
The principal component analysis (PCA) is widely used for data decorrelation and dimensionality reduction. However, the use of PCA may be impractical in real-time applications, or…
Fast Matrix Inversion and Determinant Computation for Polarimetric Synthetic Aperture Radar
D. F. G. Coelho, R. J. Cintra, A. C. Frery +1
This paper introduces a fast algorithm for simultaneous inversion and determinant computation of small sized matrices in the context of fully Polarimetric Synthetic Aperture Radar…
A New Algorithm for Double Scalar Multiplication over Koblitz Curves
J. Adikari, V. S. Dimitrov, R. J. Cintra
Koblitz curves are a special set of elliptic curves and have improved performance in computing scalar multiplication in elliptic curve cryptography due to the Frobenius endomorphis…
A Kotel'nikov Representation for Wavelets
H. M. de Oliveira, R. J. Cintra, R. C. de Oliveira
This paper presents a wavelet representation using baseband signals, by exploiting Kotel'nikov results. Details of how to obtain the processes of envelope and phase at low frequenc…
Efficient Computation of the 8-point DCT via Summation by Parts
D. F. G. Coelho, R. J. Cintra, V. S. Dimitrov
This paper introduces a new fast algorithm for the 8-point discrete cosine transform (DCT) based on the summation-by-parts formula. The proposed method converts the DCT matrix into…