Study on monitoring water area in irrigation area by local space self-correlation index

نویسندگان

چکیده

Landsat remote sensing image is a widely used data source in water sensing. Normalized difference index (NDWI), modified normalized (MNDWI) and automated extraction (AWEI) are commonly classifiers. In the process of their application, because threshold varies with location time research object, how to select highest classification accuracy time-consuming challenging task. The purpose this study was explore method that can not only improve extraction, but also provide fixed threshold, meet requirements automatic extraction. We introduced local spatial auto correlation statistics calculate Getis-Ord Gi* have hot spot analysis. Comparative analysis showed had been greatly improved through AWEIsh classifier best under condition INVERSE_DISTANCE neighborhood rule Z > 1.96, changes least different time, vegetation coverage images. Therefore, regional effective, which helpful

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ژورنال

عنوان ژورنال: Environmental Earth Sciences

سال: 2022

ISSN: ['2199-9163', '2199-9155']

DOI: https://doi.org/10.1007/s12665-022-10703-3