Abstract

Since 2003, the Scan Line Corrector (SLC) instrument of the Enhanced Thematic Mapper plus (ETM+) sensor on board a Landsat 7 satellite has failed permanently causing regular gaps to appear in Landsat 7 images. This malfunction has been limited and hampered the scientific application of ETM+ data. Therefore, several methodologies and techniques have been conducted to reconstruct these gaps in order to expand the usability of the ETM+ SLC-off images. These methods can be classified as single source and multi-source methods. In this study two single source interpolation methods, mean and IDW are utilized to estimate the missing pixels value and the obtained results are compared with multi-source approach, LLHM. The results are assessed qualitatively and quantitatively using two statistical indicators RMSE and SE. The results indicated the superiority of LLHM on the single source interpolation methods.

Keywords:

Gap filling, IDW, interpolation method, Landsat 7 ETM+, reconstruction, SLC-off image,

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The authors have no competing interests.

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