DEVELOPING ANALYSIS METHODOLOGY OF TEMPORAL RIVER CHANGES USING SPATIAL IMAGERY INFORMATION AND A GIS AND SYSTEM OF THE SAME

摘要

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.