Results 1 to 10 of about 358,634 (284)
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.
Fosson, Sophie Marie +2 more
core +5 more sources
A new family of alpha power-G using cosine function with applications and regression modeling [PDF]
Scientific ReportsThis paper discusses a novel technique to creating distribution families by combining the transformation of alpha power and the cosine function. The proposed technique have been named the cosine alpha power-generated family.
Amani S. Alghamdi, Shatha F. ALoufi
doaj +2 more sources
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.
exaly +3 more sources
Efficient Evaluation of Matrix Polynomials beyond the Paterson–Stockmeyer Method
Mathematics, 2021 Recently, two general methods for evaluating matrix polynomials requiring one matrix product less than the Paterson–Stockmeyer method were proposed, where the cost of evaluating a matrix polynomial is given asymptotically by the total number of matrix ...
Jorge Sastre, Javier Ibáñez
doaj +1 more source
MFCosface: A Masked-Face Recognition Algorithm Based on Large Margin Cosine Loss
Applied Sciences, 2021 The world today is being hit by COVID-19. As opposed to fingerprints and ID cards, facial recognition technology can effectively prevent the spread of viruses in public places because it does not require contact with specific sensors.
Hongxia Deng +5 more
doaj +1 more source
Defining Semantically Close Words of Kazakh Language with Distributed System Apache Spark
Big Data and Cognitive Computing, 2023 This work focuses on determining semantically close words and using semantic similarity in general in order to improve performance in information retrieval tasks.
Dauren Ayazbayev +3 more
doaj +1 more source
Journal of Environmental Engineering and Landscape Management, 2021 The drainage gates have been controlled for desalination under normal conditions and flood defense in Saemangeum basin, Korea. Recently, it became an issue that the gates have been opened not to deteriorate water quality in the lake.
Hyung Ju Yoo +3 more
doaj +1 more source
On the quasi-Fredholm and Saphar spectrum of strongly continuous Cosine operator function
Moroccan Journal of Pure and Applied Analysis, 2021 Let (C(t))t∈ be a strongly continuous cosine family and A be its infinitesimal generator. In this work, we prove that, if C(t) – coshλt is Saphar (resp. quasi-Fredholm) operator and λt /∉iπ, then A – λ2 is also Saphar (resp.
Boua Hamid
doaj +1 more source
Analysis of ultradian rest-activity rhythms using locomotor activity in mice [PDF]
Kosin Medical Journal, 2022 Background Locomotor activity in mice may have an ultradian rest-activity rhythm. However, to date, no study has shown how locomotor activity can be explained statistically using fitted cosine curves.
Jung Hyun Lee +4 more
doaj +1 more source
Composite Cosine Transforms [PDF]
Mathematika, 2005 The cosine transforms of functions on the unit sphere play an important role in convex geometry, the Banach space theory, stochastic geometry and other areas. Their higher-rank generalization to Grassmann manifolds represents an interesting mathematical object useful for applications.
Ournycheva, Elena, Rubin, Boris
openaire +2 more sources