Results 31 to 40 of about 401,900 (340)

An inertial based forward–backward algorithm for monotone inclusion problems and split mixed equilibrium problems in Hilbert spaces

open access: yesAdvances in Difference Equations, 2020
Iterative algorithms are widely applied to solve convex optimization problems under a suitable set of constraints. In this paper, we develop an iterative algorithm whose architecture comprises a modified version of the forward-backward splitting ...
Yasir Arfat   +3 more
doaj   +1 more source

A Novel Iterative CT Reconstruction Approach Based on FBP Algorithm. [PDF]

open access: yesPLoS ONE, 2015
The Filtered Back-Projection (FBP) algorithm and its modified versions are the most important techniques for CT (Computerized tomography) reconstruction, however, it may produce aliasing degradation in the reconstructed images due to projection ...
Hongli Shi   +3 more
doaj   +1 more source

Projected iterative algorithms with application to multicomponent transport

open access: yesLinear Algebra and its Applications, 1997
Projected iterative algorithms for solving constrained symmetric singular linear systems are examined. The symmetry of generalized inverses, the projected standard iterative methods as well as projected conjugate gradient algorithms are investigated.
Ern, Alexandre, Giovangigli, Vincent
openaire   +1 more source

Strong and Weak Convergence Criteria of Composite Iterative Algorithms for Systems of Generalized Equilibria

open access: yesAbstract and Applied Analysis, 2014
We first introduce and analyze one iterative algorithm by using the composite shrinking projection method for finding a solution of the system of generalized equilibria with constraints of several problems: a generalized mixed equilibrium problem ...
Lu-Chuan Ceng   +4 more
doaj   +1 more source

Low Dose CT Image Reconstruction Based on Structure Tensor Total Variation Using Accelerated Fast Iterative Shrinkage Thresholding Algorithm

open access: yesSensors, 2020
Low dose computed tomography (CT) has drawn much attention in the medical imaging field because of its ability to reduce the radiation dose. Recently, statistical iterative reconstruction (SIR) with total variation (TV) penalty has been developed to low ...
Junfeng Wu   +4 more
doaj   +1 more source

Multiple-sets split feasibility problem and split equality fixed point problem for firmly quasi-nonexpansive or nonexpansive mappings

open access: yesJournal of Inequalities and Applications, 2021
In this paper, we propose a new iterative algorithm for solving the multiple-sets split feasibility problem (MSSFP for short) and the split equality fixed point problem (SEFPP for short) with firmly quasi-nonexpansive operators or nonexpansive operators ...
Tongxin Xu, Luoyi Shi
doaj   +1 more source

Iterative projection algorithms for solving inverse problems [PDF]

open access: yesOceans 2003. Celebrating the Past ... Teaming Toward the Future (IEEE Cat. No.03CH37492), 2004
Inverse problems abound in the ocean sciences, as they do in almost every area of science and technology. Solutions to inverse problems are notoriously difficult, computationally expensive, and noise sensitive. Iterative projection algorithms have proved to be particularly useful for solving some image reconstruction problems with incomplete data ...
openaire   +1 more source

Comparative studies of total-variation-regularized sparse reconstruction algorithms in projection tomography

open access: yesAIP Advances, 2019
Projection tomography techniques, such as optical projection tomography and stimulated Raman projection tomography, can efficiently provide quantitative distributions of compositions in three-dimensional volumes that are isotropic and exhibit high ...
Hui Xie   +6 more
doaj   +1 more source

Fast Projection Algorithm for LIM-Based Simultaneous Algebraic Reconstruction Technique and Its Parallel Implementation on GPU

open access: yesIEEE Access, 2018
Simultaneous algebraic reconstruction technique (SART) is a well-known iterative method in X-ray computed tomography, which provides better image quality than analytical methods when dealing with incomplete or noisy data.
Shunli Zhang   +5 more
doaj   +1 more source

AN ECC-BASED ITERATIVE ALGORITHM FOR PHOTOMETRIC INVARIANT PROJECTIVE REGISTRATION [PDF]

open access: yesInternational Journal on Artificial Intelligence Tools, 2009
The ability of an algorithm to accurately estimate the parameters of the geometric transformation which aligns two image profiles even in the presence of photometric distortions can be considered as a basic requirement in many computer vision applications. Projective transformations constitute a general class which includes as special cases the affine,
Evangelidis, Georgios   +1 more
openaire   +3 more sources

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