Water body information automatic extraction method for multi-spectral image of remote sensing satellite
A technology of multi-spectral imaging and water body information, which is applied in the re-radiation of electromagnetic waves, special data processing applications, measuring devices, etc., can solve the problems of time-consuming and laborious, poor extraction effect, and low universality
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[0064] The present invention will be further described in detail below in conjunction with the accompanying drawings, such as figure 1 As shown, the flow chart of the method for automatically extracting water body information from remote sensing satellite multi-spectral imagery of the present invention. In the water index extraction stage, the atmosphere correction is first performed on a cloudless domestic satellite multi-spectral remote sensing image, because remote sensing imaging is In the atmosphere, the radiation of ground objects is detected and collected. During the process of atmospheric transmission, solar radiation will have a series of interactions with the atmosphere, including atmospheric absorption, scattering, etc., which will change the transmission characteristics of solar radiation and affect the entrance pupil of the satellite sensor. The recorded surface radiance will cause a certain deviation to the subsequent water index extraction results, so it is very i...
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