Results 21 to 30 of about 149,139 (331)
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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Large Fourier transforms never exactly realized by braiding conformal blocks [PDF]
, 2006 Fourier transform is an essential ingredient in Shor's factoring algorithm. In the standard quantum circuit model with the gate set $\{\U(2), \textrm{CNOT}\}$, the discrete Fourier transforms $F_N=(\omega^{ij})_{N\times N},i,j=0,1,..., N-1, \omega=e ...
M. A. Niesen +6 more
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Applied 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
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Generalized Discrete Cosine Transform [PDF]
2009 Pacific-Asia Conference on Circuits, Communications and Systems, 2009 The discrete cosine transform (DCT), introduced by Ahmed, Natarajan and Rao, has been used in many applications of digital signal processing, data compression and information hiding. There are four types of the discrete cosine transform. In simulating the discrete cosine transform, we propose a generalized discrete cosine transform with three ...
Jianqin Zhou, Ping Chen
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An Integer Approximation Method for Discrete Sinusoidal Transforms [PDF]
Circuits 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
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, 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
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On a Class of Parametric Transforms and Its Application to Image Compression
EURASIP 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. All transforms of one family can
David Guevorkian +2 more
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Frequency-Domain Intra Prediction Analysis and Processing for High-Quality Video Coding [PDF]
, 2016 keywords: Decoding;Discrete cosine transforms;Encoding;Frequency-domain analysis;Image coding;Video ...
Blasi, SG, Izquierdo, E, Mrak, M
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Block wavelet transforms for image coding [PDF]
, 1993 Cataloged from PDF version of article.In this paper, a new class of block transforms is presented. These transforms are constructed from subband decomposition filter banks corresponding to regular wavelets.
Cetin, A. E., Gerek, O. N., Ulukus, S.
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IET 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
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