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- W2022506061 abstract "AbstractAccording to the direct exposure measurements from flash radiographic image, a compressive sensing-based method for three-dimensional inverse transport problem is presented. The linear absorption coefficients and interface locations of objects are reconstructed directly at the same time. It is always very expensive to obtain enough measurements. With limited measurements, compressive sensing sparse reconstruction technique orthogonal matching pursuit is applied to obtain the sparse coefficients by solving an optimization problem. A three-dimensional inverse transport solver is developed based on a compressive sensing-based technique. There are three features in this solver: (1) AutoCAD is employed as a geometry preprocessor due to its powerful capacity in graphic. (2) The forward projection matrix rather than Gauss matrix is constructed by the visualization tool generator. (3) Fourier transform and Daubechies wavelet transform are adopted to convert an underdetermined system to a well-posed system in the algorithm. Simulations are performed and numerical results in pseudo-sine absorption problem, two-cube problem and two-cylinder problem when using compressive sensing-based solver agree well with the reference value.Keywords: inverse transportcompressive sensingoptimizationflash radiography" @default.
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- W2022506061 date "2013-09-19" @default.
- W2022506061 modified "2023-10-05" @default.
- W2022506061 title "Three-Dimensional Inverse Transport Solver Based on Compressive Sensing Technique" @default.
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- W2022506061 doi "https://doi.org/10.1080/00411450.2014.919324" @default.
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