Results 31 to 40 of about 123,647 (323)

The multiplicative complexity of discrete cosine transforms [PDF]

open access: yes, 1992
We obtain the multiplicative complexity of discrete cosine transforms in all cases. It is given as a function of the multiplicative complexity of discrete Fourier transforms.
Feig, Ephraim, Linzer, Elliot
core   +1 more source

Recognition of Ultrasound Images of Breast Cancer Based on Discrete Sinc Transform and Deep Learning [PDF]

open access: yesEgyptian Journal of Cancer and Biomedical Research, 2022
Background: : The most common cause of cancer-related death among women all over the world is breast cancer. Altough ultrasound emaging I useful in diagnosis of the patients, itsaccuracy needs more improvement.
Mohamed Azmy
doaj   +1 more source

An Efficient Algorithm and Architecture for the VLSI Implementation of Integer DCT That Allows an Efficient Incorporation of the Hardware Security with a Low Overhead

open access: yesApplied Sciences, 2023
In this paper, we propose a new hardware algorithm for an integer based discrete cosine transform (IntDCT) that was designed to allow an efficient VLSI implementation of the discrete cosine transform using the systolic array architectural paradigm.
Doru Florin Chiper, Arcadie Cracan
doaj   +1 more source

Improving ultrasound-based multimodal speech recognition with predictive features from representation learning [PDF]

open access: yesJASA Express Letters, 2021
Representation learning is believed to produce high-level representations of underlying dynamics in temporal sequences. A three-dimensional convolutional neural network trained to predict future frames in ultrasound tongue and optical lip images creates ...
Hongcui Wang   +2 more
doaj   +1 more source

Comparison of Discrete Cosine Transforms (DCT), Discrete Fourier Transforms (DFT), and Discrete Wavelet Transforms (DWT) in Digital Image Watermarking

open access: yes, 2017
Digital Image Watermarking is used recently to secure the image by embedding another digital image. It is typically used to identify ownership of the copyright of the signal.
R. A. Asmara   +2 more
semanticscholar   +1 more source

An Integer Approximation Method for Discrete Sinusoidal Transforms [PDF]

open access: yesCircuits Syst. Signal Process., 2020
Approximate methods have been considered as a means to the evaluation of discrete transforms. In this work, we propose and analyze a class of integer transforms for the discrete Fourier, Hartley, and cosine transforms (DFT, DHT, and DCT), based on simple
R. Cintra
semanticscholar   +1 more source

Strip and Line Discrete Cosine Transforms for Blocking Artifact Reduction [PDF]

open access: yes, 2005
The standard two dimensional block discrete cosine transform suffers greatly from the blocking artifacts when used in compression. A modified block assignment is used to reduce the block discontinuity associated with the standard DCT.
Doğdu, Erdoğan   +4 more
core   +1 more source

On a Class of Parametric Transforms and Its Application to Image Compression

open access: yesEURASIP Journal on Advances in Signal Processing, 2007
A class of parametric transforms that are based on unified representation of transform matrices in the form of sparse matrix products is described. Different families of transforms are defined within the introduced class.
Guevorkian David   +2 more
doaj   +2 more sources

Domestic smart metering infrastructure and a method for home appliances identification using low‐rate power consumption data

open access: yesIET Smart Cities, 2021
The deployment of domestic smart metering infrastructure in Great Britain provides the opportunity for identification of home appliances utilising non‐intrusive load monitoring methods.
Ioannis Paraskevas   +3 more
doaj   +1 more source

Speech Signal Compression Algorithm Based on the JPEG Technique

open access: yesJournal of Intelligent Systems, 2018
The main objective of this paper is to explore parameters usually adopted by the JPEG method and use them in speech signal compression. Speech compression is the technique of encoding the speech signal in some way that allows the same speech parameters ...
Hassan Tariq A.   +2 more
doaj   +1 more source

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