Method for evaluating debris flow activity in arid region based on accumulation fan deposition feature recognition
The invention relates to an arid region debris flow activity evaluation method based on accumulation fan deposition feature recognition, and belongs to the field of image data processing. A model parameter establishment and processing step: establishing model parameters including the channel number,...
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Format: | Patent |
Sprache: | chi ; eng |
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Zusammenfassung: | The invention relates to an arid region debris flow activity evaluation method based on accumulation fan deposition feature recognition, and belongs to the field of image data processing. A model parameter establishment and processing step: establishing model parameters including the channel number, the stacking fan area size, the maximum impact strength and the disaster occurrence frequency, and performing channel number identification, stacking fan area size calculation, maximum impact strength calculation and disaster occurrence frequency acquisition; and a model construction and evaluation result indexing step: performing unified standardization processing on the results of the four parameters, then taking the results as input variables of a principal component analysis method, solving the number of principal components having large contribution to the whole model, obtaining the weight of each principal component in the model, and constructing a model result. According to the method, large-area and large- |
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