River time series analysis system and method based on spatial image information and gis

Abstract

The invention provides a method for analyzing spatial image information and GIS based river time sequence, comprising forming low waterway and dike data in each year according to aerial photographs and satellite images of coordinates, automatically and systematically processing river level change analysis and plane shape change in each year, and easily comparing the moving of the low waterway. The system comprises a display part, a database, and a system drive component; the control manner is as follows: receiving aerial photographs, satellite images and a digital map; changing the resolutions and capacities of the aerial photographs; synchronizing the coordinates with the aerial photographs; performing geometrical compensation and image fusion on the satellite images and classifying the aquo system of the target region, dividing the river areas of the aerial photographs and satellite images of the region into a plurality of areas in each year, comparing the change of the river, and driving to alarm when the area change is judged.

Description

technical field [0001] The present invention relates to a river time series analysis system and method based on spatial image information and GIS. More specifically, the present invention relates to setting actual coordinate values ​​in the annual aerial photographs of the target river, so that the annual satellite photographs After undergoing precise geometric compensation, image fusion, and water system classification in the target region, the photos of low waterways (river courses below the full water level) and embankments are automatically compared on an annual basis, so that spatial image information and decision-making data can be quickly obtained. GIS river time series analysis system. Background technique [0002] As well-known, the river course maintenance of the river maintenance currently practiced is carried out centering on size while ignoring the characteristics of the river flow. As a result, the artificial treatment of rivers is still going on today. Theref...

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Problems solved by technology

However, the patent disclosed in Patent Document 2 also has the problem that it cannot be flexibly used in government offices for river maintenance and river planning decisions by simply warning the danger of dam facilities. In the case of monitoring the water level of a dam and notifying the degree of danger, more variables and data must be required to establish the government office and river maintenance and river planning correctly only by obtaining a very indirect correlation with the river maintenance and river planning problems of comparison and analysis

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