An Effective Two-Branch Model-Based Deep Network for Single Image Deraining

05/14/2019
by   Yinglong Wang, et al.
6

Removing rain effects from an image automatically has many applications such as autonomous driving, drone piloting and photo editing and still draws the attention of many people. Traditional methods use heuristics to handcraft various priors to remove or separate the rain effects from an image. Recently end-to-end deep learning based deraining methods have been proposed to offer more flexibility and effectiveness. However, they tend not to obtain good visual effect when encountered images with heavy rain. Heavy rain brings not only rain streaks but also haze-like effect which is caused by the accumulation of tiny raindrops. Different from previous deraining methods, in this paper we model rainy images with a new rain model to remove not only rain streaks but also haze-like effect. Guided by our model, we design a two-branch network to learn its parameters. Then, an SPP structure is jointly trained to refine the results of our model to control the degree of removing the haze-like effect flexibly. Besides, a subnetwork which can localize the rainy pixels is proposed to guide the training of our network. Extensive experiments on several datasets show that our method outperforms the state-of-the-art in both objectives assessments and visual quality.

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