Abstract
From traditional handcrafted priors to learning-based neural networks, image dehazing technique has gone through great development. In this paper, we propose an end-to-end Semantic Guided Network (SG-Net (Codebase page: https://github.com/PaulTHong/Dehaze-SG-Net)) for directly restoring the haze-free images. Inspired by the high similarity (mapping relationship) between the transmission maps and the segmentation results of hazy images, we found that the semantic information of the scene provides a strong natural prior for image restoration. To guide the dehazing more effectively and systematically, we utilize the information of semantic segmentation with three easily portable modes: Semantic Fusion (SF), Semantic Attention (SA), and Semantic Loss (SL), which compose our Semantic Guided (SG) mechanisms. By embedding these SG mechanisms into existing dehazing networks, we construct the SG-Net series: SG-AOD, SG-GCA, SG-FFA, and SG-AECR. The outperformance on image dehazing of these SG networks is demonstrated by the experiments in terms of both quantity and quality. It is worth mentioning that SG-FFA achieves the state-of-the-art performance.
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This work was supported by the Natural Science Foundation of China under grant 62071171.
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Hong, T., Guo, X., Zhang, Z., Ma, J. (2023). SG-Net: Semantic Guided Network for Image Dehazing. In: Wang, L., Gall, J., Chin, TJ., Sato, I., Chellappa, R. (eds) Computer Vision – ACCV 2022. ACCV 2022. Lecture Notes in Computer Science, vol 13843. Springer, Cham. https://doi.org/10.1007/978-3-031-26313-2_17
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