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Published in: Multimedia Systems 4/2023

05-06-2023 | Regular Paper

HRCutBlur Augment: effectively enhancing data diversity for image super-resolution

Authors: Hong Lin, Xi Wang, Chun Liu, Dewei Peng

Published in: Multimedia Systems | Issue 4/2023

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Abstract

Data augmentation is a low-cost but effective technique to suppress overfitting due to limited datasets. In this paper, we aim to design efficient data augmentation methods for image super-resolution to expand the number and diversity of data. First, we propose HRCutBlur that mixes a low-resolution image with its corresponding high-resolution image and cut-and-pastes the mixed image patch to the corresponding low-resolution image region. It alleviates the great resolution difference between low-resolution region and high-resolution region in augmented image caused by directly cut-and-pasting the high-resolution image patch to low-resolution image patch. Then, we propose HRCutBlur Augment to solve the insufficient diversity of input images caused by using a certain method alone. The core idea is to design a search space that includes various augmentation methods such as HRCutBlur and Cutout, and use a search algorithm to weighted select methods from the space to augment the input. This design can integrate the advantages of various methods and effectively enrich the diversity of data to adapt to the characteristics of different super-resolution models and various scenarios. Finally, the effectiveness and generality of our methods are verified by designing multi-dimensional experiments on different sizes of image super-resolution models and different benchmark datasets.

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Literature
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Metadata
Title
HRCutBlur Augment: effectively enhancing data diversity for image super-resolution
Authors
Hong Lin
Xi Wang
Chun Liu
Dewei Peng
Publication date
05-06-2023
Publisher
Springer Berlin Heidelberg
Published in
Multimedia Systems / Issue 4/2023
Print ISSN: 0942-4962
Electronic ISSN: 1432-1882
DOI
https://doi.org/10.1007/s00530-023-01110-0

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