The super-resolution of remote sensing images aims to recover high-resolution details from low-resolution images, which is of great significance for remote sensing applications such as urban monitoring, environmental assessment, and disaster analysis. In recent years, diffusion models have achieved remarkable progress in image generation and restoration tasks. However, existing methods often overlook change region information in complex remote sensing scenes, leading to insufficient detail restoration or structural distortion. To address this issue, this paper proposes a super-resolution method for remote sensing images based on the change-prior guided diffusion model, termed CPDiffSR. By introducing change-prior information to guide the denoising and reconstruction process of the diffusion model, this method enhances the structural representation of change regions while maintaining texture consistency in unchanged areas. Experiments conducted on the HiUCD and MSSCD datasets achieved optimal values of 0.110 9 and 0.111 1 for LPIPS and DISTS, respectively. The results demonstrate that CPDiffSR outperforms existing methods in overall performance and generates clearer, more structurally consistent high-resolution remote sensing images. These findings validate the effectiveness of change priors in diffusion models, offering a novel approach for image super-resolution in complex remote sensing scenarios.
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