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. 2021 Jun 18;13:687456. doi: 10.3389/fnagi.2021.687456

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Copyright © 2021 Wang, Zhou, Yang and Zhang.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Results of data augmentation. (A) Horizontal shear, (B) Vertical shear, (C) Image rotation, (D) Gamma correction, (E) Random translation, (F) Scaling, (G) Gaussian noise, (H) Salt-and-pepper noise, (I) Speckle noise.