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. 2021 Jun 2;11:11579. doi: 10.1038/s41598-021-90444-8

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© The Author(s) 2021

Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.

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(Left to Right) An illustration of the tissue mask overlayed on a small region of the WSI image at low resolution (level-4), here the white region corresponds to the tissue mask; An illustration of the generated uniform patch coordinate sampling grid, here the points on the image act as centers from which high-resolution image patches were extracted from the WSI image.