Abstract
Image dehazing is a fundamental problem in computer vision. However, GT images for supervised dehazing network training are virtually impossible to obtain in the real world. Therefore, unsupervised image dehazing is of great significance. In this paper, a Cycle Generative Adversarial Network (Cycle-GAN) based on the Homology Isomerism Discriminator (HID)-assisted Detail Generation Module (DGM) is proposed to achieve image dehazing under unsupervised training. In order to enable the generator to recover the details of the entire image, especially in images with complex structures, DGM is developed to boost the details performance of the output dehazing results. Then, HID is proposed to boost dehazing performance based on heterogeneous features and Channel-Spatial Attention (CSA) and complement DGM by varied guidance to the generator. Next, the loss functions are updated according to the image dehazing task based on Cycle-GAN under unsupervised learning. Finally, the experimental results under ablation study and comparison to state-of-the-art demonstrate that the proposed method has attractive results in both visual experience and quantitative metrics under various datasets.









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The O-haze, Dense-Haze, NH-HAZE datasets analyzed during the current study are respectively available at https://data.vision.ee.ethz.ch/cvl/ntire18//o-haze/, https://data.vision.ee.ethz.ch/cvl/ntire19//dense-haze/, https://data.vision.ee.ethz.ch/cvl/ntire20/nh-haze/.
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Key R&D program of Jiangsu Province, BE2021679, Tao Zhang.
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Liu, X., Zhang, T. & Zhang, J. Toward visual quality enhancement of dehazing effect with improved Cycle-GAN. Neural Comput & Applic 35, 5277–5290 (2023). https://doi.org/10.1007/s00521-022-07964-1
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DOI: https://doi.org/10.1007/s00521-022-07964-1