Results 1 to 10 of about 123,647 (323)
Steerable Discrete Cosine Transform [PDF]
IEEE Transactions on Image Processing, 2017 In image compression, classical block-based separable transforms tend to be inefficient when image blocks contain arbitrarily shaped discontinuities. For this reason, transforms incorporating directional information are an appealing alternative. In this paper, we propose a new approach to this problem, namely a discrete cosine transform (DCT) that can ...
FRACASTORO, GIULIA +2 more
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Fast Generalized Sliding Sinusoidal Transforms [PDF]
Mathematics, 2023 Discrete cosine and sine transforms closely approximate the Karhunen–Loeve transform for first-order Markov stationary signals with high and low correlation coefficients, respectively.
Vitaly Kober
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Real-time construction safety monitoring using a drone based deep hybrid attention model [PDF]
Scientific ReportsMaintaining worker safety on hazardous construction sites remains a serious challenge, especially due to the rampant shortage or misuse of Personal Protective Equipment (PPE), which is a major contributor to accidents in at-height operations ...
K. Sujit +8 more
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The discrete fractional cosine and sine transforms [PDF]
IEEE Transactions on Signal Processing, 2001 This paper is concerned with the definitions of the discrete fractional cosine transform (DFRCT) and the discrete fractional sine transform (DFRST). The definitions of DFRCT and DFRST are based on the eigen decomposition of DCT and DST kernels. This is the same idea as that of the discrete fractional Fourier transform (DFRFT); the eigenvalue and ...
Soo-Chang Pei, Min-Hung Yeh
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Directional Analytic Discrete Cosine Frames
IEEE Access, 2022 Block frames called directional analytic discrete cosine frames (DADCFs) are proposed for sparse image representation. In contrast to conventional overlapped frames, the proposed DADCFs require a reduced amount of 1) computational complexity, 2) memory ...
Seisuke Kyochi +2 more
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The Discrete Cosine Transform on Triangles [PDF]
ICASSP 2019 - 2019 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 2019 The discrete cosine transform is a valuable tool in analysis of data on undirected rectangular grids, like images. In this paper it is shown how one can define an analogue of the discrete cosine transform on triangles. This is done by combining algebraic signal processing theory with a specific kind of multivariate Chebyshev polynomials.
Bastian Seifert, Knut Hüper
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Comparative analysis of chosen transforms in the context of de-noising harmonic signals [PDF]
Biuletyn Wojskowej Akademii Technicznej, 2015 In the article, comparison of popular transforms used i.a. in denoising harmonical signals was presented. The division of signals submitted to mathematical analysis was shown and chosen transforms such as Short Time Fourier Transform, Wigner-Ville ...
Artur Zacniewski
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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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Coding Implementation By Using Discrete Wavelet Transform [PDF]
Engineering 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
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Novel Fourier quadrature transforms and analytic signal representations for nonlinear and non-stationary time-series analysis [PDF]
Royal Society Open Science, 2018 The Hilbert transform (HT) and associated Gabor analytic signal (GAS) representation are well known and widely used mathematical formulations for modelling and analysis of signals in various applications.
Pushpendra Singh
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