Flood disaster water body range detection method and device, equipment and storage medium

Abstract

The invention provides a flood disaster water body range detection method and device, equipment and a storage medium. The method comprises the following steps: acquiring a neighborhood logarithm ratio difference chart of SAR images of two time phases before and after a flood disaster; performing fuzzy clustering segmentation processing on the neighborhood logarithm ratio difference graph to obtain an initial water body change detection graph; performing prediction processing on middle pixels in the initial water body change detection image by using a preset network classifier to obtain target change pixels and target non-change pixels; the preset network classifier comprises a classifier obtained by training an initial classifier of an initial convolutional neural network based on changing pixels and non-changing pixels in the initial water body change detection image; and based on the target change pixels and the target non-change pixels, the initial water body change detection image is updated to obtain a target water body change detection image, and the middle pixels comprise pixels between the change pixels and the non-change pixels. The detection precision and the change detection effect of the flood disaster water body range can be improved.

Description

technical field [0001] The invention relates to the technical field of image processing, in particular to a method, device, equipment and storage medium for detecting the range of a flood disaster water body. Background technique [0002] In recent years, the use of SAR images for change detection has been applied in flood disasters. For example, the use of SAR images for water body change detection has unique advantages in the quantitative assessment of the extent of flood disasters. However, when flood disasters are accompanied by cloudy, rainy, In the case of extremely complex and severe weather conditions such as fog, because SAR satellites cannot penetrate clouds, it becomes difficult to use SAR to assess flood disasters. [0003] In the existing method, when the neural network model is combined with the detection of water body changes in SAR images, the high-dimensional features of SAR images that are less affected by noise are first extracted, and then the model distr...

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Problems solved by technology

[0005] The present invention provides a flood disaster water range detection method, device, equipment and storage medium, which are used to solve the defects of low accuracy and poor detection effect of water body detection in the prior art, and realize reliable and efficient detection of flood disaster water body range. Purpose of precision testing

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