Results 11 to 20 of about 149,139 (331)

Coding Implementation By Using Discrete Wavelet Transform [PDF]

open access: yesEngineering and Technology Journal, 2010
Image processing can be considered as an essential part of wide rangecomputer applications. This application deals with image coding and it discussesimage coding schemes, by using transforms to code the image or not.
Matheel Emad AL-Deen AL-Dargazli   +1 more
doaj   +1 more source

Supercharacters and the discrete Fourier, cosine, and sine transforms [PDF]

open access: yes, 2017
Using supercharacter theory, we identify the matrices that are diagonalized by the discrete cosine and discrete sine transforms, respectively. Our method affords a combinatorial interpretation for the matrix entries.
S. Garcia, S. Yih
semanticscholar   +1 more source

Implementation of Multidigit Multiplication Basing on Discrete Cosine and Sine Transforms

open access: yesКібернетика та комп'ютерні технології, 2021
Introduction. The emergence of new parallel computing systems such as multi-core processors, clusters, distributed systems, due to the solution of various applications in different spheres.
Andrii Tereshchenko, Valeriy Zadiraka
doaj   +1 more source

Comparison of discrete transforms for deep‐neural‐networks‐based speech enhancement

open access: yesIET Signal Processing, 2022
In recent studies of speech enhancement, a deep‐learning model is trained to predict clean speech spectra from the known noisy spectra of speech. Rather than using the traditional discrete Fourier transform (DFT), this paper considers other well‐known ...
Wissam A. Jassim, Naomi Harte
doaj   +1 more source

Comparison of Image Compressions: Analog Transformations

open access: yesProceedings, 2020
A comparison between the four most used transforms, the discrete Fourier transform (DFT), discrete cosine transform (DCT), the Walsh–Hadamard transform (WHT) and the Haar-wavelet transform (DWT), for the transmission of analog images, varying their ...
Jose Balsa
doaj   +1 more source

A New Pointwise Convolution in Deep Neural Networks Through Extremely Fast and Non Parametric Transforms

open access: yesIEEE Access, 2022
Some conventional transforms such as Discrete Walsh-Hadamard Transform (DWHT) and Discrete Cosine Transform (DCT) have been widely used as feature extractors in image processing but rarely applied in neural networks.
Joonhyun Jeong   +3 more
doaj   +1 more source

Image Enhancement Based on Discrete Cosine Transforms (DCT) and Discrete Wavelet Transform (DWT): A Review

open access: yesIOP Conference Series: Materials Science and Engineering, 2019
Image enhancement is an important topic in image analysis in order to help humans and computer vision algorithms to obtain an accuracy information for analysis.
Wan Azani Mustafa   +6 more
semanticscholar   +1 more source

Comparison of discrete cosine and wavelet transforms in RAW image compression systems

open access: yesКомпьютерная оптика, 2022
The article describes features of digital processing of image signals in the process of coding based on discrete cosine (DCT) and wavelet transforms (DWT) that are used in the JPEG and JPEG2000 compression standards.
S.V. Sai, A.V. Zinkevich, E.S. Fomina
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

Calculation Scheme Based on a Weighted Primitive: Application to Image Processing Transforms

open access: yesEURASIP Journal on Advances in Signal Processing, 2007
This paper presents a method to improve the calculation of functions which specially demand a great amount of computing resources. The method is based on the choice of a weighted primitive which enables the calculation of function values under the scope ...
Gregorio de Miguel Casado   +3 more
doaj   +2 more sources

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