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From local to global: a multi-group feature enhancement network for non-uniform and dense haze removal

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Abstract

In the past few years, significant research on single-image dehazing has developed rapidly. Despite this effort, it is still hard to remove the dense haze completely, particularly in complex real-world cases. The real-world haze is non-uniform and varied (light or dense). In the non-uniform case, the structure of the image can be destroyed. Besides, the procedure of dense haze removal usually leads to color distortion, detail loss and structure blurring, which increases the difficulty of image restoration. To solve these problems, we propose a multi-group feature enhancement network (MGFEN) based on a global and local context fusion pattern to remove haze progressively. Unlike previous methods, we develop a global feature fusion (GFF) module which takes a more global perspective to extract features and performs attention fusion with high-frequency features obtained from the Laplace pyramid to effectively preserve structure information of the image and remove artifacts caused by non-uniform haze. We also design a feature residual enhancement (FRE) module to improve image details and boost color fidelity by enhancing effective residuals group by group. The Experimental results of different datasets show that our MGFEN establishes the new state-of-the-art performance for real-world non-uniform and dense haze removal both in objective metrics and visual quality with better structure and color recovery ability.

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Data availability

The datasets generated during and/or analysed during the current study are available from the corresponding author on reasonable request.

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Funding

This study was supported by the Joint Fund of Ministry of Education for Equipment Pre-research (Grant number 8091B0203) and National Science and Technology Innovation 2030 Major Program (Grant number 2022ZD0205000).

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Authors and Affiliations

  1. School of Electronic and Information Engineering, Beijing Jiaotong University, Beijing, 100044, China

    Xiaotao Shao, Yan Guo, Yan Shen, Manyi Qian & Zhongli Wang

Authors
  1. Xiaotao Shao
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  2. Yan Guo
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  3. Yan Shen
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  4. Manyi Qian
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  5. Zhongli Wang
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Contributions

Conceptualization: Xiaotao Shao; Methodology: Xiaotao Shao; Formal analysis and investigation: Yan Guo; Writing - original draft preparation: Yan Guo; Writing - review and editing: Yan Shen; Funding acquisition: Yan Shen; Resources: Manyi Qian; Supervision: Manyi Qian; Validation: Zhongli Wang; Visualization: Zhongli Wang.

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Correspondence to Yan Shen.

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Shao, X., Guo, Y., Shen, Y. et al. From local to global: a multi-group feature enhancement network for non-uniform and dense haze removal. Multimed Tools Appl 82, 27057–27073 (2023). https://doi.org/10.1007/s11042-023-14950-9

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