Journal
REMOTE SENSING
Volume 13, Issue 15, Pages -Publisher
MDPI
DOI: 10.3390/rs13152966
Keywords
remote sensing images; super resolution; dense network; attention mechanism
Categories
Funding
- National Natural Science Foundation of China [42001307, 62061038]
- Ningxia Key RD Program [2020BFG02013]
- Natural Science Foundation of Ningxia [2020AAC02006]
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The DCAN method utilizes dense channel attention and spatial attention blocks to reconstruct remote sensing images, effectively capturing high-frequency details and improving the network's discriminative ability.
In the recent years, convolutional neural networks (CNN)-based super resolution (SR) methods are widely used in the field of remote sensing. However, complicated remote sensing images contain abundant high-frequency details, which are difficult to capture and reconstruct effectively. To address this problem, we propose a dense channel attention network (DCAN) to reconstruct high-resolution (HR) remote sensing images. The proposed method learns multi-level feature information and pays more attention to the important and useful regions in order to better reconstruct the final image. Specifically, we construct a dense channel attention mechanism (DCAM), which densely uses the feature maps from the channel attention block via skip connection. This mechanism makes better use of multi-level feature maps which contain abundant high-frequency information. Further, we add a spatial attention block, which makes the network have more flexible discriminative ability. Experimental results demonstrate that the proposed DCAN method outperforms several state-of-the-art methods in both quantitative evaluation and visual quality.
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