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Communication Dans Un Congrès Année : 2022

EVALUATION AND COMPARISON OF TWO DEEP-LEARNING STRATEGIES FOR ON-LINE X-RAY COMPUTED TOMOGRAPHY

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X-ray Computed Tomography (CT) has been increasingly used in many industrial domains for its unique capability of con- trolling both the integrity and dimensional conformity of parts. Still, it fails to be adopted as a standard technique for on-line mon- itoring due to its excessive cost in terms of acquisition time. The reduction of the number of projections, leading to the so-called sparse-view CT strategy, while maintaining a sufficient recon- struction quality is therefore one of the main challenges in this field. This work aims to evaluate and compare the performances of two deep learning strategies for the sparse-view reconstruction problem. As such, we propose an extensive study of these meth- ods, both in terms of data regime and angular sparsity during training. The two strategies present quantitative improvements over a classical FBP/FDK approach with a PSNR improvement varying between 11 and 16 dB (depending on the angular spar- sity) ; showing that efficient CT inspection can be performed from only few dozens of images
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Romain Vo, Julie Escoda, Caroline Vienne, Etienne Decencière. EVALUATION AND COMPARISON OF TWO DEEP-LEARNING STRATEGIES FOR ON-LINE X-RAY COMPUTED TOMOGRAPHY. 49th Annual Review of Progress in Quantitative Nondestructive Evaluation, Jul 2022, San diego (Californie), United States. ⟨10.1115/QNDE2022-98387⟩. ⟨hal-03933448⟩
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