28 citations · 65 across the 4 of their papers we have counts for
4 papers
Extensions on Low-complexity DCT Approximations for Larger Blocklengths Based on Minimal Angle Similarity
A. P. Radünz, L. Portella, R. S. Oliveira +2
The discrete cosine transform (DCT) is a central tool for image and video coding because it can be related to the Karhunen-Loève transform (KLT), which is the optimal transform in…
Low-Complexity Loeffler DCT Approximations for Image and Video Coding
D. F. G. Coelho, R. J. Cintra, F. M. Bayer +6
This paper introduced a matrix parametrization method based on the Loeffler discrete cosine transform (DCT) algorithm. As a result, a new class of eight-point DCT approximations wa…
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…
Multiplierless 16-point DCT Approximation for Low-complexity Image and Video Coding
T. L. T. Silveira, R. S. Oliveira, F. M. Bayer +2
An orthogonal 16-point approximate discrete cosine transform (DCT) is introduced. The proposed transform requires neither multiplications nor bit-shifting operations. A fast algori…