Results 1 to 10 of about 30,814 (162)

Prime tight frames [PDF]

Advances in Computational Mathematics, 2013
We introduce a class of finite tight frames called prime tight frames and prove some of their elementary properties. In particular, we show that any finite tight frame can be written as a union of prime tight frames. We then characterize all prime harmonic tight frames and use this characterization to suggest effective analysis and synthesis ...
Jakob Lemvig, Kasso Okoudjou
exaly   +3 more sources

Tight Frames and Their Symmetries [PDF]

Constructive Approximation, 2004
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Shayne Waldron, Waldron Shayne
exaly   +2 more sources

Balanced sparse model for tight frames in compressed sensing magnetic resonance imaging. [PDF]

PLoS ONE, 2015
Compressed sensing has shown to be promising to accelerate magnetic resonance imaging. In this new technology, magnetic resonance images are usually reconstructed by enforcing its sparsity in sparse image reconstruction models, including both synthesis ...
Yunsong Liu, Jian-Feng Cai, Zhifang Zhan, Di Guo, Jing Ye, Zhong Chen, Xiaobo Qu   +6 more
doaj   +2 more sources

Entanglement witnesses and separability criteria based on generalized equiangular tight frames [PDF]

Scientific Reports
In quantum information theory, measurements are represented by positive, operator-valued measures. In this paper, we use the operators corresponding to generalized equiangular measurements to construct positive maps.
Katarzyna Siudzińska
doaj   +2 more sources

Scalable g-frame in Hilbert spaces [PDF]

Mathematics and Computational Sciences, 2023
Tight frames and g-frames are extremely useful in applications. A scalable frame was recentlyintroduced as a frame with the property of generating a tight frame by rescaling its frame vectors.
Amir Khosravi, Mohammad Reza Farmani
doaj   +1 more source

Correction: Entanglement witnesses and separability criteria based on generalized equiangular tight frames [PDF]

Scientific Reports
Katarzyna Siudzińska
doaj   +2 more sources

Unitary extension principle on zero-dimensional locally compact groups [PDF]

Известия Саратовского университета. Новая серия: Математика. Механика. Информатика, 2023
In this article, we obtain methods for constructing step  tight frames on an arbitrary locally compact zero-dimensional group. To do this, we use the principle of unitary extension.
Lukomskii, Sergei Feodorovich, Kruss, Iuliia Sergeevna   +1 more
doaj   +1 more source

Local Convergence of the Continuous and Semi-Discrete Wavelet Transform in $L^p\left(\mathbb{R}\right)$

Mathematics, 2021
The smoothness of functions f in the space Lp(R) with ...
Jaime Navarro-Fuentes, Salvador Arellano-Balderas, Oscar Herrera-Alcántara   +2 more
doaj   +1 more source

Supervised dual tight frame learning with deep thresholding network for phase retrieval

IET Image Processing, 2022
Data‐driven tight frames are popular for solving imaging inverse problems. However, the imaging quality is limited by the representation ability of single tight frame and thresholds tuned manually.
Baoshun Shi, Qiusheng Lian, Yueming Su
doaj   +1 more source

Fingerprinting With Equiangular Tight Frames [PDF]

IEEE Transactions on Information Theory, 2013
Digital fingerprinting is a framework for marking media files, such as images, music, or movies, with user-specific signatures to deter illegal distribution. Multiple users can collude to produce a forgery that can potentially overcome a fingerprinting system.
Dustin G. Mixon, Christopher J. Quinn, Negar Kiyavash, Matthew Fickus   +3 more
openaire   +2 more sources