Surface water information extraction method based on normalized water excavation index
A technology for information extraction and water body information, applied in electrical digital data processing, special data processing applications, instruments, etc., can solve problems such as poor work efficiency and low degree of automation, and achieve the effect of improving accuracy and overcoming confusion.
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[0033] The method for extracting surface water information based on the normalized water body mining index of the present invention will be described in detail below with reference to the drawings and embodiments.
[0034] Such as figure 1 As shown, a method for extracting surface water information based on a normalized water body mining index of the present invention includes the following steps:
[0035] Step 1. Select remote sensing feature index
[0036] Select six remote sensing feature indexes, namely the normalized vegetation index NDVI and the ratio vegetation index RVI that can extract vegetation information, the improved normalized difference water index MNDWI that can extract water body information well, and can effectively extract building information The normalized building difference index NDBI, and the soil index SI and bare soil index BI that can extract soil information.
[0037] The six remote sensing feature indexes are calculated using the following formula:
[0038...
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