Cooperated detecting method for ice of The Yellow River based on multispectral image and SAR image
A multi-spectral image, collaborative detection technology, applied in image enhancement, image analysis, image data processing and other directions, can solve problems such as poor accuracy
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[0046] The specific steps of the Yellow River icicle collaborative detection method based on multispectral images and SAR images in the present invention are as follows:
[0047] 1. Obtain the results of ice detection in remote sensing images.
[0048] 4) Image preprocessing.
[0049] iv) Firstly, radiometric correction is performed on the remote sensing image.
[0050] can be expressed as,
[0051] E = E 0 c o s θ d 2
[0052] where E is the normalized solar irradiance, E 0 is the solar irradiance at the average distance between the sun and the earth, generally a constant, θ is the solar zenith angle, d is the distance between the sun and the earth, and is a variable related to the season.
[0053] Due to the Bow-tie effect in the image processed by radiation correction,...
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