Continuous Degradation Modeling via Latent Flow Matching for Real-World Super-Resolution

Fuente: arXiv
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Main Authors: Kim, Hyeonjae, Kim, Dongjin, Jin, Eugene, Kim, Tae Hyun
Format: Preprint
Published: 2026
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author Kim, Hyeonjae
Kim, Dongjin
Jin, Eugene
Kim, Tae Hyun
author_facet Kim, Hyeonjae
Kim, Dongjin
Jin, Eugene
Kim, Tae Hyun
contents While deep learning-based super-resolution (SR) methods have shown impressive outcomes with synthetic degradation scenarios such as bicubic downsampling, they frequently struggle to perform well on real-world images that feature complex, nonlinear degradations like noise, blur, and compression artifacts. Recent efforts to address this issue have involved the painstaking compilation of real low-resolution (LR) and high-resolution (HR) image pairs, usually limited to several specific downscaling factors. To address these challenges, our work introduces a novel framework capable of synthesizing authentic LR images from a single HR image by leveraging the latent degradation space with flow matching. Our approach generates LR images with realistic artifacts at unseen degradation levels, which facilitates the creation of large-scale, real-world SR training datasets. Comprehensive quantitative and qualitative assessments verify that our synthetic LR images accurately replicate real-world degradations. Furthermore, both traditional and arbitrary-scale SR models trained using our datasets consistently yield much better HR outcomes.
format Preprint
id arxiv_https___arxiv_org_abs_2602_04193
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle Continuous Degradation Modeling via Latent Flow Matching for Real-World Super-Resolution
Kim, Hyeonjae
Kim, Dongjin
Jin, Eugene
Kim, Tae Hyun
Computer Vision and Pattern Recognition
While deep learning-based super-resolution (SR) methods have shown impressive outcomes with synthetic degradation scenarios such as bicubic downsampling, they frequently struggle to perform well on real-world images that feature complex, nonlinear degradations like noise, blur, and compression artifacts. Recent efforts to address this issue have involved the painstaking compilation of real low-resolution (LR) and high-resolution (HR) image pairs, usually limited to several specific downscaling factors. To address these challenges, our work introduces a novel framework capable of synthesizing authentic LR images from a single HR image by leveraging the latent degradation space with flow matching. Our approach generates LR images with realistic artifacts at unseen degradation levels, which facilitates the creation of large-scale, real-world SR training datasets. Comprehensive quantitative and qualitative assessments verify that our synthetic LR images accurately replicate real-world degradations. Furthermore, both traditional and arbitrary-scale SR models trained using our datasets consistently yield much better HR outcomes.
title Continuous Degradation Modeling via Latent Flow Matching for Real-World Super-Resolution
topic Computer Vision and Pattern Recognition
url https://arxiv.org/abs/2602.04193