Results 31 to 40 of about 3,552,646 (301)
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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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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IEEE Access, 2022 A binary time series can be transformed into a Branch Length Similarity (BLS) entropy profile by being mapped to a circumference called a time-circle. In this study, we explored how peaks and cliffs are formed and how they relate to time series.
Sang-Hee Lee, Cheol-Min Park
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Transformations With Discrete Spectrum are Stacking Transformations [PDF]
Canadian Journal of Mathematics, 1976 The stacking method (see [1] and [5, Section 6]) has been used with great success in ergodic theory to construct a wide variety of examples of ergodic transformations (see, for example, [1 ; 3 ; 4; 5; 7]). However very little is known in general about the class of transformations which can be constructed by the stacking method using single stacks.
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Matrix Factorization and Some Fast Discrete Transforms
AxiomsIn this paper, three discrete transforms related to vector spaces over finite fields are studied. For our purposes, and according to the properties of the finite fields, the most suitable transforms are as follows: for binary fields, this is the Walsh ...
Iliya Bouyukliev +2 more
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A New Measure to Characterize the Self-Similarity of Binary Time Series and its Application
IEEE Access, 2021 In this study, the branch-length similarity entropy profile is estimated by mapping the time-series signal to the circumference of the time circle, and the self-similarity is defined based on the profile.
Sang-Hee Lee, Cheol-Min Park
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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
semanticscholar +1 more source
On the CLT for discrete Fourier transforms of functional time series [PDF]
Journal of Multivariate Analysis, 2015 We consider a strictly stationary and ergodic sequence of random elements taking values in some Hilbert space. Our target is to study the weak convergence of the discrete Fourier transforms under sharp conditions.
Clément Cerovecki, S. Hörmann
semanticscholar +1 more source
Design and analysis strategies for robust microbiome ageing research
FEBS Letters, EarlyView.The gut microbiome changes with age and associates with age‐related morbidity and mortality, establishing it as a potential biomarker and intervention target for ageing. Realising this potential requires methodological rigour, yet distinguishing biological signals from methodological artefacts remains challenging across cohorts. This review provides an
Mark Olenik +5 more
wiley +1 more source
Advances in Electrical and Computer EngineeringClustering holds significant utility across a spectrum of several domains, including pattern recognition, image analysis, customer analytics, market segmentation, social network analysis, and numerous other areas. The main advantages of image clustering
ANDREI, A.-T., GRIGORE, O.
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