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. 2022 Jun 9;12:9533. doi: 10.1038/s41598-022-13658-4

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© The Author(s) 2022

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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Results for ablation studies. The upper and lower rows show the extracted small region. (a) Represents the resultant SR image with single scale features extraction. (b) Represents the resultant SR image for experiment without the mini-network. (c) Represents the resultant SR image for experiments after removing the absolute difference error term from the loss function. (d) Represents the resultant SR image for experiment with the overall proposed method. (e) Represents the corresponding HR ground truth image. Arrows point to the extracted small regions to highlight the regions where difference occurs.