Geometric matrix research for nuclear waste drum tomographic gamma scanning transmission image reconstruction

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ZHANG Jin-Zhao and TUO Xian-Guo. Geometric matrix research for nuclear waste drum tomographic gamma scanning transmission image reconstruction[J]. Chinese Physics C, 2015, 39(6): 068202. doi: 10.1088/1674-1137/39/6/068202
ZHANG Jin-Zhao and TUO Xian-Guo. Geometric matrix research for nuclear waste drum tomographic gamma scanning transmission image reconstruction[J]. Chinese Physics C, 2015, 39(6): 068202.  doi: 10.1088/1674-1137/39/6/068202 shu
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Received: 2014-09-28
Revised: 1900-01-01
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Geometric matrix research for nuclear waste drum tomographic gamma scanning transmission image reconstruction

    Corresponding author: ZHANG Jin-Zhao,

Abstract: A geometric matrix model of nuclear waste drums is proposed for transmission image reconstruction from tomographic gamma scans (TGS). The model assumes that rays are conical, with intensity uniformly distributed within the cone. The attenuation coefficients are centered on the voxel (cube) of the geometric center. The proposed model is verified using the EM algorithm and compared to previously reported models. The calculated results show that the model can obtain good reconstruction results even when the sample models are highly heterogeneous.

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