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

ZHANG Jin-Zhao; TUO Xian-Guo

doi:10.1088/1674-1137/39/6/068202

Chinese Physics C> 2015, Vol. 39> Issue(6) : 068202 DOI: 10.1088/1674-1137/39/6/068202

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

ZHANG Jin-Zhao ^, ,
TUO Xian-Guo

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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.

References

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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

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Received: 2014-09-28
Revised: 1900-01-01

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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

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

Corresponding author: ZHANG Jin-Zhao,

Received Date: 2014-09-28

Accepted Date: 1900-01-01

Available Online: 2015-06-05

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

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