Results 1 to 10 of about 401,900 (340)
Projection Matrix Based Iterative Reconstruction Algorithm for Robotic CT [PDF]
IEEE Access, 2023 Robotic computed tomography (CT) consists of two separate manipulators which carry the source and detector, respectively. Various errors occur in motion due to lack of rigid connection, which may change scanning trajectory of this system.
Xuan Zhou, Qiong Xu, Cunfeng Wei
doaj +3 more sources
Live Iterative Ptychography with projection-based algorithms [PDF]
ICASSP 2024 - 2024 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 2023 In this work, we demonstrate that the ptychographic phase problem can be solved in a live fashion during scanning, while data is still being collected. We propose a generally applicable modification of the widespread projection-based algorithms such as Error Reduction (ER) and Difference Map (DM).
Simon Welker +3 more
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Projections for Approximate Policy Iteration Algorithms [PDF]
, 2022 Approximate policy iteration is a class of reinforcement learning (RL) algorithms where the policy is encoded using a function approximator and which has been especially prominent in RL with continuous action spaces. In this class of RL algorithms, ensuring increase of the policy return during policy update often requires to constrain the change in ...
Riad Akrour +3 more
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Iterative algorithms with seminorm‐induced oblique projections [PDF]
Abstract and Applied Analysis, 2003 A definition of oblique projections onto closed convex sets that use seminorms induced by diagonal matrices which may have zeros on the diagonal is introduced. Existence and uniqueness of such projections are secured via directional affinity of the sets with respect to the diagonal matrices involved. A block‐iterative algorithmic scheme for solving the
Yair Censor, Tommy Elfving
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Projection Classification Based Iterative Algorithm [PDF]
IOP Conference Series: Materials Science and Engineering, 2015 Iterative algorithm has good performance as it does not need complete projection data in 3D image reconstruction area. It is possible to be applied in BGA based solder joints inspection but with low convergence speed which usually acts with x-ray Laminography that has a worse reconstruction image compared to the former one. This paper explores to apply
Ruiqiu Zhang, Chen Li, Wenhua Gao
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Coordinate descent iterations in fast affine projection algorithm [PDF]
IEEE Signal Processing Letters, 2005 We propose a new approach for real-time implementation of the fast affine projection (FAP) algorithm. This is based on exploiting the recently introduced dichotomous coordinate descent (DCD) algorithm, which is especially efficient for solving systems of linear equations on real-time hardware and software platforms since it is free of multiplication ...
Yuriy Zakharov, Felix Albu
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A projection iterative algorithm boundary element method for the Signorini problem
, 2013 We propose a projection iterative algorithm based on a fixed point equation for solving a certain class of Signorini problem. The satisfaction of the Signorini boundary conditions is verified in a projection iterative manner, and at each iterative step ...
Shou-gui Zhang, Jiali Zhu
semanticscholar +3 more sources
Iterative projection algorithms for ab initio phasing in virus crystallography
Journal of Structural Biology, 2016 Iterative projection algorithms are proposed as a tool for ab initio phasing in virus crystallography. The good global convergence properties of these algorithms, coupled with the spherical shape and high structural redundancy of icosahedral viruses, allows high resolution phases to be determined with no initial phase information.
V. L. Lo +2 more
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Iterative Cosparse Projection Algorithms For The Recovery Of Cosparse Vectors
, 2011 Publication in the conference proceedings of EUSIPCO, Barcelona, Spain ...
Mike E. Davies +3 more
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