English

Local-Global Context-Aware and Structure-Preserving Image Super-Resolution

Computer Vision and Pattern Recognition 2025-10-16 v1

Abstract

Diffusion models have recently achieved significant success in various image manipulation tasks, including image super-resolution and perceptual quality enhancement. Pretrained text-to-image models, such as Stable Diffusion, have exhibited strong capabilities in synthesizing realistic image content, which makes them particularly attractive for addressing super-resolution tasks. While some existing approaches leverage these models to achieve state-of-the-art results, they often struggle when applied to diverse and highly degraded images, leading to noise amplification or incorrect content generation. To address these limitations, we propose a contextually precise image super-resolution framework that effectively maintains both local and global pixel relationships through Local-Global Context-Aware Attention, enabling the generation of high-quality images. Furthermore, we propose a distribution- and perceptual-aligned conditioning mechanism in the pixel space to enhance perceptual fidelity. This mechanism captures fine-grained pixel-level representations while progressively preserving and refining structural information, transitioning from local content details to the global structural composition. During inference, our method generates high-quality images that are structurally consistent with the original content, mitigating artifacts and ensuring realistic detail restoration. Extensive experiments on multiple super-resolution benchmarks demonstrate the effectiveness of our approach in producing high-fidelity, perceptually accurate reconstructions.

Keywords

Cite

@article{arxiv.2510.13649,
  title  = {Local-Global Context-Aware and Structure-Preserving Image Super-Resolution},
  author = {Sanchar Palit and Subhasis Chaudhuri and Biplab Banerjee},
  journal= {arXiv preprint arXiv:2510.13649},
  year   = {2025}
}

Comments

10 pages, 11 figures

R2 v1 2026-07-01T06:39:09.197Z