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    • Adaptive superpixel generation for time-series PolSAR images considering time-varying characteristics

    • Significant progress has been made in the research of superpixel generation technology for multi temporal and multi polarized SAR data. In response to the problem that single phase superpixel segmentation methods cannot fully utilize the complete temporal scattering information of ground objects, researchers propose an adaptive superpixel generation method for multi temporal polarimetric SAR images based on a simple linear iterative clustering (SLIC) model. This method combines the polarization covariance matrices of multiple time phases, calculates the temporal polarization SAR similarity distance based on Wishart distribution, and uses multi temporal polarization SAR data for gradient calculation and edge detection. By introducing homogeneity measurement factors based on multi temporal polarization SAR edge detection, this method can adaptively balance the weight relationship between polarization distance and spatial distance. The experimental results show that this method outperforms both single phase polarization SAR superpixel generation methods and existing multi phase polarization SAR superpixel methods in terms of visualization effect and quantitative accuracy. The superpixels can closely adhere to the boundaries of the study area. This research achievement provides a new solution for efficient processing and application of object level data processing systems, which is of great significance for the processing and application of large amounts of multi temporal and multi polarization SAR data.
      • role:First author第一作者
      • Affiliation:

        School of Geosciences and Info-Physics, Central South University, Changsha 410083, China

      • Email:yejiawei@csu.edu.cn
      • Introduction:叶家伟,研究方向为时序极化SAR图像处理。E-mail: yejiawei@csu.edu.cn

      YE Jiawei

      ,
      • role:Corresponding author通信作者
      • Affiliation:

        School of Geosciences and Info-Physics, Central South University, Changsha 410083, China

      • Email:wangchangcheng@csu.edu.cn
      • Introduction:汪长城,研究方向为遥感图像处理、SAR/极化SAR图像处理。E-mail: wangchangcheng@csu.edu.cn

      WANG Changcheng

      * ,
      • Affiliation:

        School of Geosciences and Info-Physics, Central South University, Changsha 410083, China

      GAO Han

      ,
      • Affiliation:

        School of Geosciences and Info-Physics, Central South University, Changsha 410083, China

      SHEN Peng

      ,
      • Affiliation:

        School of Geosciences and Info-Physics, Central South University, Changsha 410083, China

      SONG Tianyi

      ,
      • Affiliation:

        School of Geosciences and Info-Physics, Central South University, Changsha 410083, China

      HU Chihao

    • Vol. 28, Issue 4, Pages: 1066-1075(2024)  
    • DOI:10.11834/jrs.20221498    

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Jiawei YE 中南大学 地球科学与信息物理学院
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