Extraction and Spatial Coding Method of Water Body Information in the Yangtze River Basin

Abstract

The present invention proposes a water body information extraction and spatial encoding method in the Yangtze River Basin, including the following steps: (1) Atmospheric correction of high-resolution remote sensing images based on an atmospheric radiation transfer model; (2) Geometric correction of high-resolution remote sensing images based on a rational function model ; (3) Mosaic processing of high-resolution remote sensing image data based on Snake model; (4) Fusion processing of high-resolution remote sensing image data based on wavelet transform; (5) Extraction of water body spatio-temporal information based on object-oriented; (6) Based on hierarchical classification Spatial coding of water body information. The advantages of the present invention: 1) Effectively realize the real-time monitoring and management of the water environment and resources in the Yangtze River Basin; 2) Provide scientific basis for the development strategy of the Yangtze River Economic Belt, regional ecological environment protection and planning; 3) Suitable for the space of water body information in other river basins Extraction and information management.

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.

Images