Results 41 to 50 of about 133,855 (339)
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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Journal of Synchrotron RadiationThe New Advanced Telescope for High ENergy Astrophysics (NewAthena) will be the largest space-based X-ray observatory ever built. It will have an effective area above 1.1 m2 at 1 keV, which corresponds to a polished mirror surface of about 300 m2 due to ...
M. Krumrey +7 more
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Deep Learning on Small Datasets without Pre-Training using Cosine Loss [PDF]
IEEE Workshop/Winter Conference on Applications of Computer Vision, 2019 Two things seem to be indisputable in the contemporary deep learning discourse: 1. The categorical cross-entropy loss after softmax activation is the method of choice for classification. 2.
Björn Barz, Joachim Denzler
semanticscholar +1 more source
The stability of the cosine equation [PDF]
Proceedings of the American Mathematical Society, 1980 If δ > 0 \delta > 0 , G is an abelian group and f is a complex-valued function defined on G such that | f ( x + y ) + f ( x − y ) − 2 f ( x ) f (
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On bounds of the sine and cosine along straight lines on the complex plane
Acta Universitatis Sapientiae: Mathematica, 2019 In the paper, the author discusses and computes bounds of the sine and cosine along straight lines on the complex plane.
Qi Feng
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A Remark on Cosine Families [PDF]
Proceedings of the American Mathematical Society, 1980 Let C ( t ) , t ∈ R C(t),t \in R , be a strongly continuous cosine family and A its infinitesimal generator. Then the set E = d e f {
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FEBS Open Bio, EarlyView.The contrast transfer function (CTF) is an imaging aberration that is a major resolution‐limiting factor in cryo‐electron microscopy (cryo‐EM). Precise CTF estimation is key to overcoming this limitation, but is particularly challenging in cryo‐electron tomography (cryo‐ET) data. Here, we present an approach for using geometric information to assist in
Sagar Khavnekar, William Wan
wiley +1 more source
Extended Moreno-García cosine products
AIMS Mathematics, 2023 The Moreno-García cosine product is extended to evaluate an extensive number of trigonometric products previously published. The products are taken over finite and infinite domains defined in terms of the Hurwitz-Lerch Zeta function, which can be ...
Robert Reynolds
doaj +1 more source
Frontiers in Genetics, 2021 To tackle the challenges in genomic data analysis caused by their tens of thousands of dimensions while having a small number of examples and unbalanced examples between classes, the technique of unsupervised feature selection based on standard deviation
Juanying Xie +4 more
semanticscholar +1 more source