A Feature Reuse Framework with Texture-adaptive Aggregation for Reference-based Super-Resolution

• URL: http://arxiv.org/abs/2306.01500v1
• Date: Fri, 2 Jun 2023 12:49:22 GMT
• Title: A Feature Reuse Framework with Texture-adaptive Aggregation for Reference-based Super-Resolution
• Authors: Xiaoyong Mei, Yi Yang, Ming Li, Changqin Huang, Kai Zhang, Pietro Li\'o
• Abstract summary: Reference-based super-resolution (RefSR) has gained considerable success in the field of super-resolution. We propose a feature reuse framework that guides the step-by-step texture reconstruction process. We introduce a single image feature embedding module and a texture-adaptive aggregation module.
• Score: 29.57364804554312
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Reference-based super-resolution (RefSR) has gained considerable success in the field of super-resolution with the addition of high-resolution reference images to reconstruct low-resolution (LR) inputs with more high-frequency details, thereby overcoming some limitations of single image super-resolution (SISR). Previous research in the field of RefSR has mostly focused on two crucial aspects. The first is accurate correspondence matching between the LR and the reference (Ref) image. The second is the effective transfer and aggregation of similar texture information from the Ref images. Nonetheless, an important detail of perceptual loss and adversarial loss has been underestimated, which has a certain adverse effect on texture transfer and reconstruction. In this study, we propose a feature reuse framework that guides the step-by-step texture reconstruction process through different stages, reducing the negative impacts of perceptual and adversarial loss. The feature reuse framework can be used for any RefSR model, and several RefSR approaches have improved their performance after being retrained using our framework. Additionally, we introduce a single image feature embedding module and a texture-adaptive aggregation module. The single image feature embedding module assists in reconstructing the features of the LR inputs itself and effectively lowers the possibility of including irrelevant textures. The texture-adaptive aggregation module dynamically perceives and aggregates texture information between the LR inputs and the Ref images using dynamic filters. This enhances the utilization of the reference texture while reducing reference misuse. The source code is available at https://github.com/Yi-Yang355/FRFSR.

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