Split Bregman quantum noise removal algorithm for 3D reconstruction of neutron computed tomography image

¹ School of Nuclear Science and Engineering, North China Electric Power University - Beijing 102206, China
² State Key Laboratory of Nuclear Resources and Environment, East China University of Technology Nanchang 330013, China
³ State Key Laboratory of Intense Pulsed Radiation Simulation and Effect - Xi'an 710024, China

Received: 1 January 2024
Accepted: 21 February 2024

Abstract

The low intensity of the neutron source for neutron computed tomography (CT) results in a long acquisition time for a single projection, which causes the neutron projection data to contain a large amount of quantum noise. Quantum noise will degrade the quality of neutron CT reconstruction images. Therefore, an efficient quantum noise removal algorithm must be used in CT reconstruction. In this paper, an efficient quantum noise removal algorithm for neutron CT 3D image reconstruction is proposed by analysing classical image processing algorithms and quantum image processing algorithms, which employs the maximum likelihood expectation maximization to reconstruct the image and split Bregman algorithm to solve for the total variation (MLEM-SBTV). Experimental results show that MLEM-SBTV performs well in removing quantum noise and reconstructing the detailed structure of images.