Results 21 to 30 of about 123,647 (323)
Supercharacters and the discrete Fourier, cosine, and sine transforms [PDF]
, 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
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Implementation of Multidigit Multiplication Basing on Discrete Cosine and Sine Transforms
Кібернетика 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
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Comparison of discrete transforms for deep‐neural‐networks‐based speech enhancement
IET 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
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Comparison of Image Compressions: Analog Transformations
Proceedings, 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
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IOP 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
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Novel sparse OBC based distributed arithmetic architecture for matrix transforms [PDF]
, 2007 Inner product (IP) forms the basis of a number of signal processing algorithms and applications such as transforms, filters, communication systems etc. Distributed arithmetic (DA) provides an effective methodology to implement IP of vectors and matrices ...
Amira, A +3 more
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The Discrete Cosine Transform [PDF]
SIAM Review, 1999 In this paper the author derives the Discrete Cosine Transform (DCT) bases as eigenvectors of a symmetric second-difference matrix with certain boundary conditions. The type of boundary condition (Dirichlet or Neumann, centered at a meshpoint or a midpoint) determines the applications that are appropriate for each transform.
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IEEE 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
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Calculation Scheme Based on a Weighted Primitive: Application to Image Processing Transforms
EURASIP 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
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Comparison of discrete cosine and wavelet transforms in RAW image compression systems
Компьютерная 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
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