MATEC Web of Conferences (Jan 2018)

Remote Sensing Image Super-resolution Based on Sparse Representation

  • Zhu Fuzhen,
  • Liu Yue,
  • Huang Xin,
  • Zhu Haitao

DOI
https://doi.org/10.1051/matecconf/201823202037
Journal volume & issue
Vol. 232
p. 02037

Abstract

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In order to obtain higher resolution remote sensing images with more details, an improved sparse representation remote sensing image super-resolution reconstruction(SRR) algorithm is proposed. First, remote sensing image is preprocessed to obtain the required training sample image; then, the KSVD algorithm is used for dictionary training to obtain the high-low resolution dictionary pairs; finally, the image feature extraction block is represented, which is improved by using adaptive filtering method. At the same time, the mean value filtering method is used to improve the super-resolution reconstruction iterative calculation. Experiment results show that, compared with the most advanced sparse representation super-resolution algorithm, the improved sparse representation super-resolution method can effectively avoid the loss of edge information of SRR image and obtain a better super-resolution reconstruction effect. The texture details are more abundant in subjective vision, the PSNR is increased about 1 dB, and the structure similarity (SSIM) is increased about 0.01.