Blind Image Denoising via Dynamic Dual Learning

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

14 Scopus Citations
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Original languageEnglish
Article number9136787
Pages (from-to)2139-2152
Number of pages14
Journal / PublicationIEEE Transactions on Multimedia
Online published8 Jul 2020
Publication statusPublished - 2021


Existing discriminative learning methods for image denoising use either a single residual learning or a nonresidual learning design. However, we observe that these two schemes perform differently with the same noise level, and yet, there have been no explorations regarding whether residual or nonresidual designs are better suited for denoising. Additionally, many discriminative denoisers are designed to learn a model that corresponds to a fixed noise level, which means that multiple models are required to recover corrupted images with noise at different levels. In this paper, we propose a dynamic dual learning network for blind image denoising, namely, DualBDNet. Instead of modeling a sole task prediction network, the proposed DualBDNet investigates the inherent relations between the residual estimation and the nonresidual estimation. In particular, DualBDNet produces task-dependent feature maps, and each part of the features is devoted to one specific task (residual/nonresidual mapping). To address different noise levels with a single network or even cases where the statistics of noise are unknown, we further introduce an embedded subnetwork into DualBDNet. One output of the subnetwork is the learning of a dynamic compositional attention to highlight the more significant task-dependent feature maps, adaptively coinciding with the extent of corruption. The other output is the learning of a weight used for fusion of the results to ensure an end-to-end manner. Extensive experiments demonstrate that the proposed DualBDNet outperforms the state-of-the-art methods on both synthetic and real noisy images without estimating the noise levels as input.

Research Area(s)

  • Blind image denoising, convolutional neural networks, dual learning, Gaussian noise

Citation Format(s)

Blind Image Denoising via Dynamic Dual Learning. / Du, Yong; Han, Guoqiang; Tan, Yinjie et al.
In: IEEE Transactions on Multimedia, Vol. 23, 9136787, 2021, p. 2139-2152.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review