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. 2022 Mar 2;478(2259):20210762. doi: 10.1098/rspa.2021.0762

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© 2022 The Authors.

Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/, which permits unrestricted use, provided the original author and source are credited.

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Figure 4. — (a) Examples of the ROC curves for the reference defect with a noise level of $σ_{n} = 0.008 V$ at various $r_{d}$ ; (b) the maximum detection distance, $r_{m}$ , as a function of $σ_{n}$ , for the reference defect under various POD and PFA combinations. The results were obtained using equations (2.5) and (2.8). (Online version in colour.)