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首页> 外文期刊>Inverse Problems: An International Journal of Inverse Problems, Inverse Methods and Computerised Inversion of Data >Tomographic reconstruction from non-calibrated noisy projections in non-destructive evaluation
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Tomographic reconstruction from non-calibrated noisy projections in non-destructive evaluation

机译:无损评估中非校准噪声投影的层析成像重建

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摘要

We focus on three-dimensional reconstruction when a few two-dimensional noisy projections are available with limited angle projections. Furthermore, in this paper, the projections are not calibrated since they are given up to a multiplicative constant. With such incomplete data, classical techniques fail to produce acceptable reconstructions. It is well known that the introduction of regularization in the form of a cost function penalizing irregularity of the reconstructed object can improve performance. However, to obtain an accurate reconstruction, it is necessary to estimate the parameters of the cost function. In this paper, we address this problem.
机译:当一些带有有限角度投影的二维噪声投影可用时,我们将重点放在三维重建上。此外,在本文中,由于投影被赋予了乘性常数,因此未对其进行校准。对于这种不完整的数据,经典技术无法产生可接受的重构。众所周知,以代价函数的形式引入正则化以惩罚重构对象的不规则性可以改善性能。但是,为了获得准确的重构,必须估计成本函数的参数。在本文中,我们解决了这个问题。

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