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. 2021 Dec 1;21(23):8025. doi: 10.3390/s21238025

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© 2021 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

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Example of the effect of the augmentation techniques used. (A) No augmentation, (B) color jitter, (C) Gaussian blur, (D) horizontal flip, (E) vertical flip, and (F) rotation.