Papers › Single Image Dehazing via Multi-scale Convolutional Neural Networks
Single Image Dehazing via Multi-scale Convolutional Neural Networks
Wenqi Ren; Si Liu; Hua Zhang; Jinshan Pan; Xiaochun Cao; Ming-Hsuan Yang
The performance of existing image dehazing methods is limited by hand-designed features, such as the dark channel, color disparity and maximum contrast, with complex fusion schemes. In this paper, we propose a multi-scale deep neural network for single-image dehazing by learning the mapping between hazy images and their corresponding transmission maps. The proposed algorithm consists of a coarse-scale net which predicts a holistic transmission map based on the entire image, and a fine-scale net which refines results locally. To train the multi-scale deep network, we synthesize a dataset comprised of hazy images and corresponding transmission maps based on the NYU Depth dataset. Extensive experiments demonstrate that the proposed algorithm performs favorably against the state-of-the-art methods on both synthetic and real-world images in terms of quality and speed.
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