Buffer zone automatic segmentation and classification method suitable for winding river and device thereof

Abstract

The invention discloses a buffer zone automatic segmentation and classification method suitable for a winding river and a device thereof, and belongs to the field of river monitoring, and the method comprises the steps: obtaining remote sensing image data, land utilization classification data and water system vector data; determining a river waterline according to the remote sensing image data and the water system data; taking a river waterline as a reference to make a buffer area, and respectively obtaining inner and outer side lines of the buffer areas on two sides; obtaining segment nodes of inner and outer edge lines of a buffer zone, and dividing the buffer zone into a plurality of coarse segment units; segmenting an inland river running water side line and a buffer area outer side line of the buffer area coarse segmentation unit in an equal division manner, and dividing the coarse segmentation unit into a plurality of fine segmentation units; according to the land utilization classification data, judging the land utilization occupation condition in each subdivision section unit, and determining the river buffer zone classification condition. The method performs automatic step-by-step segmentation on the buffer zones on the two sides of the winding river, guarantees the classification efficiency and precision of the buffer zones, and achieves the rapid monitoring of the current situation of the buffer zones of the winding river.

Description

technical field [0001] The invention relates to the field of river monitoring, in particular to a method and device for automatic segmentation and classification of a buffer zone suitable for meandering rivers. Background technique [0002] The river buffer zone is an important carrier of the river ecosystem, and has ecological functions such as preventing and controlling non-point source pollution, protecting water quality, stabilizing river banks, and maintaining species diversity. Obtaining the status quo of the buffer zone and its historical changes is of great significance for the decision-making of water ecological environment management such as the restoration of the buffer zone of the river. [0003] The river buffer zone classification technology based on remote sensing and other spatial information technologies is an effective means of monitoring river buffer zones. Compared with traditional methods such as ground surveys, it greatly improves the efficiency of rive...

AI Technical Summary

Problems solved by technology

However, the existing buffer zone remote sensing monitoring methods are mostly suitable for rivers with low meandering degree, simple trend and consistent shape on both banks. When applied to meandering rivers with complex shapes, unreasonable segmentation of the buffer zone will occur, resulting in classification results. large error

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