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Title: Coupled rain streak and background estimation via separable element-wise attention
Authors: Tan, YJ
Wen, Q
Qin, J 
Jiao, JB
Han, GQ
He, SF
Issue Date: 2020
Source: IEEE access, 20 Jan. 2020, v. 8, p. 16627-16636
Abstract: Single image de-raining is challenging especially in the scenarios with dense rain streaks. Existing methods resolve this problem by predicting the rain streaks of the image, which constrains the network to focus on local rain streaks features. However, dense rain streaks are visually similar to mist or fog (with large intensities), in this case, the training objective should be shifted to image recovery instead of extracting rain streaks. In this paper, we propose a coupled rain streak and background estimation network that explores the intrinsic relations between two tasks. In particular, our network produces task-dependent feature maps, each part of the features correspond to the estimation of rain streak and background. Furthermore, to inject element-wise attention to all the convolutional blocks for better understanding the rain streaks distribution, we propose a Separable Element-wise Attention mechanism. In this way, dense element-wise attention can be obtained by a sequence of channel and spatial attention modules, with negligible computation. Extensive experiments demonstrate that the proposed method outperforms state-of-the-arts on 5 existing synthesized rain datasets and the real-world scenarios, without extra multi-scale or recurrent structure.
Keywords: Background estimation
Element-wise attention
Publisher: Institute of Electrical and Electronics Engineers
Journal: IEEE access 
EISSN: 2169-3536
DOI: 10.1109/ACCESS.2020.2967891
Rights: This work is licensed under a Creative Commons Attribution 4.0 License. For more information, see
The following publication Y. Tan, Q. Wen, J. Qin, J. Jiao, G. Han and S. He, "Coupled Rain Streak and Background Estimation via Separable Element-Wise Attention," in IEEE Access, vol. 8, pp. 16627-16636, 2020 is available at
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