Results 61 to 70 of about 1,231,296 (158)

Local Spatial Attention Transformer For Sparse Photoacoustic Image Reconstruction

open access: yes
Sparse sampling is crucial in photoacoustic imaging for rapid data acquisition with low computation. However, reconstructing high-quality images from sparse data is challenging due to undersampling artifacts.
Shi, Lulin   +3 more
core   +1 more source

Reconstruction in the United States [electronic resource].

open access: yes, 1918
In double columns.Cover title."Second of a series of pamphlets by the Canadian Reconstruction Association dealing with measures being taken in other countries to meet after-war conditions..."--p.
Canadian Reconstruction Association.
core  

Distance Reconstruction of Sparse Random Graphs

open access: yesCoRR
In the distance query model, we are given access to the vertex set of a $n$-vertex graph $G$, and an oracle that takes as input two vertices and returns the distance between these two vertices in $G$. We study how many queries are needed to reconstruct the edge set of $G$ when $G$ is sampled according to the $G(n,p)$ Erdős-Renyi-Gilbert distribution ...
openaire   +2 more sources

Sparse Correlation Kernel Analysis and Reconstruction [PDF]

open access: yes, 1998
This paper presents a new paradigm for signal reconstruction and superresolution, Correlation Kernel Analysis (CKA), that is based on the selection of a sparse set of bases from a large dictionary of class- specific basis functions.
Papgeorgiou, Constantine P.   +5 more
core  

Sparse Reconstructions for Inverse PDE Problems

open access: yes, 2009
We are concerned with the numerical solution of linear parameter identification problems for parabolic PDE, written as an operator equation $Ku=f$. The target object $u$ is assumed to have a sparse expansion with respect to a wavelet system $Psi={psi_lambda}$ in space-time, being equivalent to a priori information on the regularity of $u=mathbf u ...
openaire   +4 more sources

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