Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Multi-energy CT reconstruction using nonlocal total nuclear generalized
  variation   Multi-energy CT based on compression sensing theory with sparse-view sampling
can effectively reduce radiation dose and maintain the quality of the
reconstructed image. However,when the projection data are noisy, the
reconstructed image can be still seriously degraded. In order to address this
problem, we extend the total nuclear variation (TNV) regularization and propose
the nonlocal total nuclear generalized variation (NLTNGV) regularization term.
NLTNGV is constructed by using the low rank property of both the nonlocal
Jacobian matrix and the local second derivative of the image at different
energy spectrum, which can be seen as a more robust structure similarity
measure. By employing NLTNGV,the proposed reconstruction method can effectively
utilize the sparsity of nonlocal gradients and local second order derivatives
and structural similarity of multi-energy CT images to effectively recover the
image structure features in noisy case. The experimental results show that the
proposed method can enhance the noise-resistant performance and preserve the
fine details of the reconstructed images in comparison with TNV-based method.

26
The categories of this paper are: bayes-an
8
The categories of this paper are: hep-ex
37
The categories of this paper are: supr-con
12
The categories of this paper are: nucl-th
35
The categories of this paper are: mtrl-th
30
The categories of this paper are: q-alg
23
The categories of this paper are: solv-int
20
The categories of this paper are: acc-phys
33
The categories of this paper are: plasm-ph
34
The categories of this paper are: chem-ph
27
The categories of this paper are: comp-gas
1
The categories of this paper are: cs
7
The categories of this paper are: hep-th
15
The categories of this paper are: nucl-ex
10
The categories of this paper are: q-bio
14
The categories of this paper are: math-ph