| Abstract: | When neutron yield is very low,reconstruction of coding penumbra image is rather difficult.In this paper,low-yield(10~9)14 MeV neutron penumbra imaging was simulated by Monte Carlo method.The Richardson Lucy(R-L)iteration method was proposed to incorporated with Bayesian least square-Gaussian scale mixture model(BLS-GSM)wavelet denoising for the simulated image.Optimal number of R-L iterations was gotten by a large number of tests.The results show that compared with Wiener method and median filter denoising,this method is better in restraining background noise,the correlation coefficient R_(sr)between the reconstructed and the real images is larger,and the reconstruction result is better. |
