Learning Multi-scale Spatial-frequency Features for Image Denoising
Abstract
Recent advancements in multi-scale architectures have demonstrated exceptional performance in image denoising tasks. However, existing architectures mainly depends on a fixed single-input single-output Unet architecture, ignoring the multi-scale representations of pixel level. In addition, previous methods treat the frequency domain uniformly, ignoring the different characteristics of high-frequency and low-frequency noise. In this paper, we propose a novel multi-scale adaptive dual-domain network (MADNet) for image denoising. We use image pyramid inputs to restore noise-free results from low-resolution images. In order to realize the interaction of high-frequency and low-frequency information, we design an adaptive spatial-frequency learning unit (ASFU), where a learnable mask is used to separate the information into high-frequency and low-frequency components. In the skip connections, we design a global feature fusion block to enhance the features at different scales. Extensive experiments on both synthetic and real noisy image datasets verify the effectiveness of MADNet compared with current state-of-the-art denoising approaches.
Cite
@article{arxiv.2506.16307,
title = {Learning Multi-scale Spatial-frequency Features for Image Denoising},
author = {Xu Zhao and Chen Zhao and Xiantao Hu and Hongliang Zhang and Ying Tai and Jian Yang},
journal= {arXiv preprint arXiv:2506.16307},
year = {2025}
}