Scattering Correction for Image Reconstruction in Flash Radiography

LIANGZHI CAO; Mengqi Wang; Hongchun Wu; Zhouyu Liu; Yuxiong Cheng; Hongbo Zhang

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자료유형: 학술저널

저자정보: LIANGZHI CAO Mengqi Wang Hongchun Wu Zhouyu Liu Yuxiong Cheng Hongbo Zhang

저널정보: 한국원자력학회 Nuclear Engineering and Technology Nuclear Engineering and Technology 제45권 제4호

발행연도: 2013.1

수록면: 529 - 538 (10page)

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Scattered photons cause blurring and distortions in flash radiography, reducing the accuracy of image reconstruction significantly. The effect of the scattered photons is taken into account and an iterative deduction of the scattered photons is proposed to amend the scattering effect for image restoration. In order to deduct the scattering contribution, the flux of scattered photons is estimated as the sum of two components. The single scattered component is calculated accurately together with the uncollided flux along the characteristic ray, while the multiple scattered component is evaluated using correction coefficients pre-obtained from Monte Carlo simulations.The arbitrary geometry pretreatment and ray tracing are carried out based on the customization of AutoCAD. With the above model, an Iterative Procedure for image restORation code, IPOR, is developed. Numerical results demonstrate that the IPOR code is much more accurate than the direct reconstruction solution without scattering correction and it has a very high computational efficiency.

#Flash Radiography #Scattering Correction #Image Reconstruction #Arbitrary Geometry

참고문헌 (13)

참고문헌 신청

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