Super-Resolution Reconstruction of Remote Sensing Images Based on Symmetric Local Fusion Blocks

Xinqiang Wang and Wenhuan Lu
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Xinqiang Wang: Tianjin Sino-German University of Applied Sciences, China
Wenhuan Lu: Tianjin University, China

International Journal of Information Security and Privacy (IJISP), 2023, vol. 17, issue 1, 1-14

Abstract: In view of the rich information and strong autocorrelation of remote sensing images, a super-resolution reconstruction algorithm based on symmetric local fusion blocks is proposed using a convolutional neural network based on local fusion blocks, which improves the effect of high-frequency information reconstruction. By setting local fusion in the residual block, the problem of insufficient high-frequency feature extraction is alleviated, and the reconstruction accuracy of remote sensing images of deep networks is improved. To improve the utilization of global features and reduce the computational complexity of the network, a residual method is used to set the symmetric jump connection between the local fusion blocks to form the symmetry between them. Experimental results show that the reconstruction results of 2-, 3-, and 4-fold sampling factors on the UC Merced and nwpu-resisc45 remote sensing datasets are better than those of comparison algorithms in image clarity and edge sharpness, and the reconstruction results are better in objective evaluation and subjective vision.

Date: 2023
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