Results 1 to 10 of about 1,107 (155)
Wavelets, ridgelets and curvelets on the sphere [PDF]
Astronomy and Astrophysics, 2006 Accepted for publication in A&A.
Jean-Luc Starck
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Ridgelets and the Representation of Mutilated Sobolev Functions [PDF]
SIAM Journal on Mathematical Analysis, 2001 Summary: We show that ridgelets, a system introduced in [\textit{E. J. Candès}, Appl. Comput. Harmon. Anal. 6, No. 2, 197-218 (1999; Zbl 0931.68104)], are optimal to represent smooth multivariate functions that may exhibit linear singularities. For instance, let \(\{u\cdot x - b >0\}\) be an arbitrary hyperplane and consider the singular function \(f(x)
Candès, Emmanuel J.
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Local-Ternary-Pattern-Based Associated Histogram Equalization Technique for Cervical Cancer Detection [PDF]
Diagnostics, 2023 Every year, cervical cancer is a leading cause of mortality in women all over the world. This cancer can be cured if it is detected early and patients are treated promptly.
Saravanan Srinivasan +5 more
doaj +2 more sources
Three-dimensional paleohistology of the scale and median fin spine of Lophosteus superbus (Pander 1856) [PDF]
PeerJ, 2016 Lophosteus superbus is one of only a handful of probable stem-group osteichthyans known from the fossil record. First collected and described in the late 19th century from the upper Silurian Saaremaa Cliff locality in Estonia, it is known from a wealth ...
Anna Jerve +4 more
doaj +3 more sources
Iris Recognition Using Ridgelets [PDF]
Journal of Information Processing Systems, 2012 Abstract —Image feature extraction is one of the basic works for biometric analysis. This paper presents the novel concept of application of ridgelets for iris recognition systems. Ridgelet transforms are the combination of Radon transforms and Wavelet transforms. They are suitable for extracting the abundantly present textural data that is in an iris.
Lenina Birgale, Manesh Kokare
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On the approximation of functions with line singularities by ridgelets [PDF]
Journal of Approximation Theory, 2019 58 pages, 2 ...
Philipp Grohs
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Wavelets, Ridgelets, and Curvelets for Poisson Noise Removal [PDF]
IEEE Transactions on Image Processing, 2008 In order to denoise Poisson count data, we introduce a variance stabilizing transform (VST) applied on a filtered discrete Poisson process, yielding a near Gaussian process with asymptotic constant variance. This new transform, which can be deemed as an extension of the Anscombe transform to filtered data, is simple, fast, and efficient in (very) low ...
Jean-Luc Starck
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Ridge Functions and Orthonormal Ridgelets
Journal of Approximation Theory, 2001 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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On Approximation of Orientation Distributions by Means of Spherical Ridgelets [PDF]
IEEE Transactions on Image Processing, 2010 Oleg Michailovich, Yogesh Rathi
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The Ridgelet transform of distributions [PDF]
Integral Transforms and Special Functions, 2013 We define and study the ridgelet transform of (Lizorkin) distributions. We establish connections with the Radon and wavelet transforms.
Kostadinova, Sanja +3 more
openaire +3 more sources