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Degradation-Guided One-Step Image Super-Resolution with Diffusion Priors

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arxiv 2409.17058 v1 pith:R3WBXESR submitted 2024-09-25 cs.CV

classification cs.CV
keywords modelmethodsdiffusionefficiencysuper-resolutiondegradationdegradation-guideddiffusion-based
verification ladder T0 review T1 audit T2 compute T3 formal
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Diffusion-based image super-resolution (SR) methods have achieved remarkable success by leveraging large pre-trained text-to-image diffusion models as priors. However, these methods still face two challenges: the requirement for dozens of sampling steps to achieve satisfactory results, which limits efficiency in real scenarios, and the neglect of degradation models, which are critical auxiliary information in solving the SR problem. In this work, we introduced a novel one-step SR model, which significantly addresses the efficiency issue of diffusion-based SR methods. Unlike existing fine-tuning strategies, we designed a degradation-guided Low-Rank Adaptation (LoRA) module specifically for SR, which corrects the model parameters based on the pre-estimated degradation information from low-resolution images. This module not only facilitates a powerful data-dependent or degradation-dependent SR model but also preserves the generative prior of the pre-trained diffusion model as much as possible. Furthermore, we tailor a novel training pipeline by introducing an online negative sample generation strategy. Combined with the classifier-free guidance strategy during inference, it largely improves the perceptual quality of the super-resolution results. Extensive experiments have demonstrated the superior efficiency and effectiveness of the proposed model compared to recent state-of-the-art methods.

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Cited by 6 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. How far have we gone in Generative Image Restoration? A study on its capability, limitations and evaluation practices

    cs.CV 2026-03 accept novelty 6.0 of 10

    Modern generative image restoration has shifted from under-generating details to over-generating them with semantic errors, revealed by multi-dimensional evaluation of 20 models across curated scenes and degradations.

  2. Fine-structure Preserved Real-world Image Super-resolution via Transfer VAE Training

    cs.CV 2025-07 conditional novelty 6.0 of 10

    A transfer training scheme converts Stable Diffusion's 8x VAE into a 4x VAE that stays compatible with the pretrained UNet, improving fine-structure preservation in real-world super-resolution at lower FLOPs.

  3. Degradation-Modeled Multipath Diffusion for Tunable Metalens Photography

    cs.CV 2025-06 conditional novelty 6.0 of 10

    A multipath diffusion model, guided by simulated lens blur and image-quality scores, restores sharp images from a custom 1 mm3 metalens camera, beating published baselines on the authors' test set.

  4. StableCodec: Taming One-Step Diffusion for Extreme Image Compression

    eess.IV 2025-06 conditional novelty 6.0 of 10

    A one-step diffusion codec that compresses noisy latents at 64x and decodes with a single denoising step, setting state-of-the-art FID, KID, and DISTS at ultra-low bitrates.

  5. LPM: Industrial-Scale Generative Video Restoration

    cs.CV 2026-07 conditional novelty 5.0 of 10

    LPM is a two-stage diffusion-based video-restoration system deployed at Kuaishou, claiming industrial-scale use, 45% viewing-time coverage, and 20% bitrate savings at comparable perceptual quality.

  6. Efficient Difficulty-Aware Dynamic Routing for Diffusion-Based Real-World Image Super-Resolution

    cs.CV 2026-07 reject novelty 4.0 of 10

    DDR-SR routes each real-world low-resolution image to one of two diffusion experts based on a high-frequency-loss difficulty score, using a low-compression VAE for hard images and a high-compression VAE for easy image...

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