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SONG Ming-zhu, GUO Rong, LI Li-zhou, TAO Shu-ping, CHEN Yan-tong, WANG Jun-sheng. Sea surface glint suppression method based on polarization feature reconstruction[J]. Chinese Optics. doi: 10.37188/CO.2024-0008
Citation: SONG Ming-zhu, GUO Rong, LI Li-zhou, TAO Shu-ping, CHEN Yan-tong, WANG Jun-sheng. Sea surface glint suppression method based on polarization feature reconstruction[J]. Chinese Optics. doi: 10.37188/CO.2024-0008

Sea surface glint suppression method based on polarization feature reconstruction

doi: 10.37188/CO.2024-0008
Funds:  Supported by the National Natural Science Foundation of China (No. 62205046, No. 62075219, No. 52171343); Key Technological Research Projects of Jilin Province (No. 20220201076GX); Fundamental Research Funds for the Central Universities (No. 3132023230, No. 3132023506); Dalian Youth Science and Technology Star Project Support Program (No. 2023RQ021)
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  • Corresponding author: wangjsh@dlmu.edu.cn
  • Received Date: 09 Jan 2024
  • Accepted Date: 18 Mar 2024
  • Available Online: 17 May 2024
  • Solar glint is a significant factor influencing sea surface target detection. For land observation platforms, a sea surface glint suppression method based on the reconstruction of common characteristics of linearly polarized images is proposed using the polarization characteristics of glints. The proposed method uses a focal plane polarization camera to obtain four-channel linear polarized images, calculates the scene’s polarization information, and generates a glint suppression image. Based on suppressing scene glint with polarization information combined with the characteristics of linear polarization images, the light intensity components of the glint suppression image are decomposed into common and characteristic components, and new weight factors are given to obtain the reconstructed glint suppression image. The results of field polarization experiments show that the maximum relative decrease in the proportion of saturated pixels in the reconstructed glint suppression image compared to the intensity image was 79.07%, and the maximum relative increase in spatial frequency and contrast were 73.77% and 172.73%, respectively. The method proposed in this paper effectively suppresses the glint noise in the sea scene and performs well in restoring background detail information.

     

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