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Zhang, Yongbing; Sun, Lulu; Yan, Chenggang; Ji, Xiangyang; Dai, Qionghai
IEEE transactions on image processing, 2018-July, 2018-Jul, 2018-7-00, 20180701, Letnik: 27, Številka: 7Journal Article
Image restoration methods based on convolutional neural networks have shown great success in the literature. However, since most of networks are not deep enough, there is still some room for the performance improvement. On the other hand, though some models are deep and introduce shortcuts for easy training, they ignore the importance of location and scaling of different inputs within the shortcuts. As a result, existing networks can only handle one specific image restoration application. To address such problems, we propose a novel adaptive residual network (ARN) for high-quality image restoration in this paper. Our ARN is a deep residual network, which is composed of convolutional layers, parametric rectified linear unit layers, and some adaptive shortcuts. We assign different scaling parameters to different inputs of the shortcuts, where the scaling is considered as part parameters of the ARN and trained adaptively according to different applications. Due to the special construction of ARN, it can solve many image restoration problems and have superior performance. We demonstrate its capabilities with three representative applications, including Gaussian image denoising, single image super resolution, and JPEG image deblocking. Experimental results prove that our model greatly outperforms numerous state-of-the-art restoration methods in terms of both peak signal-to-noise ratio and structure similarity index metrics, e.g., it achieves 0.2-0.3 dB gain in average compared with the second best method at a wide range of situations.
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Leto | Faktor vpliva | Izdaja | Kategorija | Razvrstitev | ||||
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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