Optics and Precision Engineering, Volume. 30, Issue 14, 1738(2022)

Feature point detection for optical and SAR remote sensing images registration

Lina WANG1... Huaidan LIANG1, Zhongshi WANG2, Rui XU2 and Guangfeng SHI1,* |Show fewer author(s)
Author Affiliations
  • 1College of Electro-Mechanical Engineering, Changchun University of Science and Technology,Changchun30022, China
  • 2Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun130033, China
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    Figures & Tables(12)
    Flow chart of the proposed method
    Harris detection results of different PC feature
    High resolution optical images
    Two sets of simulated images (The left are optical images and the right are SAR images, L=5)
    Repeatability rate curve of feature points
    Simulated nonlinear radiometric differences images
    Feature point extraction results of four algorithms
    Optical and SAR images
    Registration results of four algorithms
    • Table 1. Repetition rates of the four methods in the case of nonlinear radiometric differences

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      Table 1. Repetition rates of the four methods in the case of nonlinear radiometric differences

      GroupHarris

      SAR-

      Harris

      m+M-HarrisMMPC-Harris
      Group 172.85%41.76%64.51%87.91%
      Group 260.50%71.56%65.13%90.53%
    • Table 2. Program logic diagram of MMPC-Harris

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      Table 2. Program logic diagram of MMPC-Harris

      MMPC-Harris算法

      输入图像

      1) 分块策略:将图像分成Sn×Sm个子图像;

      2) 分别对每个子图像计算PC值;

      for k = 1,,5 do

      kt=-1+0.5(k-1),构建Mk,Harris特征点提取;}

      end for

      3) for i = 1,, (角点数) do

      统计特征点iM1~Mn上出现的次数;

      if (出现次数)≥3 do

      {计算该特征点在M1~Mn上的坐标的平均值,作为该特征点最终的坐标;}

      end if

      end for

      4) 合并特征点

      输出: MMPC-Harris检测结果

    • Table 2. NCM and RMSE of the four algorithms

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      Table 2. NCM and RMSE of the four algorithms

      AlgorithmRMSENCM
      Harris+HOSMI2.8223
      SAR-Harris+HOSMI2.6632
      m+M-Harris+HOSMI1.9135
      MMPC-Harris+HOSMI1.6758
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    Lina WANG, Huaidan LIANG, Zhongshi WANG, Rui XU, Guangfeng SHI. Feature point detection for optical and SAR remote sensing images registration[J]. Optics and Precision Engineering, 2022, 30(14): 1738

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    Paper Information

    Category: Information Sciences

    Received: Nov. 24, 2021

    Accepted: --

    Published Online: Sep. 6, 2022

    The Author Email: SHI Guangfeng (shiguangfeng@cust.edu.cn)

    DOI:10.37188/OPE.20223014.1738

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