The Changjiang River drainage basin information extracting and spatial coding method

Abstract

The invention provides the Changjiang River drainage basin information extracting and spatial coding method which comprises the following steps of (1), performing high resolution remote sensing image atmosphere correction based on an atmosphere radiation transmission model; (2), performing high resolution remote sensing image geographical correction based on a rational function model; (3), performing high resolution remote sensing image data embedding processing based on a Snake model; (4), performing high resolution remote sensing image data fusion processing based on wavelet transformation; (5), performing extraction based on object-oriented water body time-space information; and (6), performing water body information spatial coding based on a hierarchical classification method. The Changjiang River drainage basin information extracting and spatial coding method has advantages of 1), effectively realizing real-time monitoring and management for water environment and resource of the Changjiang River drainage basin; 2), supplying a scientific basis for the Changjiang River economic band development strategy, area ecology environment protection and planning; and 3), realizing suitability for spatial extraction and management of water body information in other drainage basins.

Description

technical field [0001] The invention relates to a method for extracting water body information in the Yangtze River Basin and its spatial encoding method, and belongs to the technical field of environmental monitoring and protection. Background technique [0002] As the longest river in China, the longest river in Asia and the third longest river in the world, the Yangtze River runs through nine provinces (Qinghai, Tibet, Sichuan, Yunnan, Hubei, Hunan, Jiangxi, Anhui and Jiangsu) and two cities from west to east. Chongqing and Shanghai) and the three major economic plates, connecting the three major urban agglomerations of the Yangtze River Delta urban agglomeration, the middle reaches of the Yangtze River urban agglomeration and the Chengdu-Chongqing urban agglomeration, are of great significance to the spatial and temporal layout of China's social and economic development and ecological environment construction. Under the influence of global climate change and human activi...

AI Technical Summary

Problems solved by technology

In the process of extracting water body information, due to the influence of factors such as complex surface environment, meteorological environment, geographical environment, water body itself and water quality problems caused by human activities, the accuracy of water body information extracted by traditional surveying and mapping methods varies in different time and space scales. There is a high degree of heterogeneity in the water body, which cannot accurately reflect the overall environmental conditions of the water body.

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