163 citations · 1.5k across the 72 of their papers we have counts for
4 papers · 1 filter
On Filter Banks and Wavelets Based on Chebyshev Polynomials
R. J. Cintra, H. M. de Oliveira, L. R. Soares
In this paper we introduce a new family of wavelets, named Chebyshev wavelets, which are derived from conventional first and second kind Chebyshev polynomials. Properties of Chebys…
Multiplierless Approximate 4-point DCT VLSI Architectures for Transform Block Coding
F. M. Bayer, R. J. Cintra, A. Madanayake +1
Two multiplierless algorithms are proposed for 4x4 approximate-DCT for transform coding in digital video. Computational architectures for 1-D/2-D realisations are implemented using…
A DCT Approximation for Image Compression
R. J. Cintra, F. M. Bayer
An orthogonal approximation for the 8-point discrete cosine transform (DCT) is introduced. The proposed transformation matrix contains only zeros and ones; multiplications and bit-…
A Multiplierless Pruned DCT-like Transformation for Image and Video Compression that Requires 10 Additions Only
V. A. Coutinho, R. J. Cintra, F. M. Bayer +2
A multiplierless pruned approximate 8-point discrete cosine transform (DCT) requiring only 10 additions is introduced. The proposed algorithm was assessed in image and video compre…