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Article Navigation> JOURNAL OF BEIJING INSTITUTE OF TECHNOLOGY> 2020> 29(3): 345-353
Wenling Shi, Huiqian Du, Wenbo Mei. Novel Channel Attention Residual Network for Single Image Super-Resolution[J]. JOURNAL OF BEIJING INSTITUTE OF TECHNOLOGY, 2020, 29(3): 345-353. doi: 10.15918/j.jbit1004-0579.20022
Citation: Wenling Shi, Huiqian Du, Wenbo Mei. Novel Channel Attention Residual Network for Single Image Super-Resolution[J].JOURNAL OF BEIJING INSTITUTE OF TECHNOLOGY, 2020, 29(3): 345-353.doi:10.15918/j.jbit1004-0579.20022
shu

Novel Channel Attention Residual Network for Single Image Super-Resolution

doi:10.15918/j.jbit1004-0579.20022

  • School of Information and Electronics, Beijing Institute of Technology, Beijing 100081, China

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  • Corresponding author:professor, Ph.D. E-mail:duhuiqian@bit.edu.cn
  • Received Date:2020-03-01
  • Publish Date:2020-09-30
    Abstract
  • A novel channel attention residual network (CAN) for SISR has been proposed to rescale pixel-wise features by explicitly modeling interdependencies between channels and encoding where the visual attention is located. The backbone of CAN is channel attention block (CAB). The proposed CAB combines cosine similarity block (CSB) and back-projection gating block (BG). CSB fully considers global spatial information of each channel and computes the cosine similarity between each channel to obtain finer channel statistics than the first-order statistics. For further exploration of channel attention, we introduce effective back-projection to the gating mechanism and propose BG. Meanwhile, we adopt local and global residual connections in SISR which directly convey most low-frequency information to the final SR outputs and valuable high-frequency components are allocated more computational resources through channel attention mechanism. Extensive experiments show the superiority of the proposed CAN over the state-of-the-art methods on benchmark datasets in both accuracy and visual quality.
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