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      Permanent link:
      https://www.ias.ac.in/article/fulltext/jess/118/05/0609-0617

    • Keywords

       

      High resolution image; texture analysis; segmentation; IKONOS; Hölder exponent; cluster.

    • Abstract

       

      Texture in high-resolution satellite images requires substantial amendment in the conventional segmentation algorithms. A measure is proposed to compute the Hölder exponent (HE) to assess the roughness or smoothness around each pixel of the image. The localized singularity information is incorporated in computing the HE. An optimum window size is evaluated so that HE reacts to localized singularity. A two-step iterative procedure for clustering the transformed HE image is adapted to identify the range of HE, densely occupied in the kernel and to partition Hölder exponents into a cluster that matches with the range. Hölder exponent values (noise or not associated with the other cluster) are clubbed to a nearest possible cluster using the local maximum likelihood analysis.

    • Author Affiliations

       

      Debasish Chakraborty1 Gautam Kumar Sen2 Sugata Hazra2

      1. Regional Remote Sensing Service Centre, Indian Space Research Organization, IIT Campus, Kharagpur 721 302, India.
      2. School of Oceanographic Studies, Jadavpur University, Kolkata 700 032, India.
    • Dates

       
  • Journal of Earth System Science | News

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