Method and device for acquiring undulating surface sugarcane acreage based on remote sensing image

Abstract

The invention discloses a method and device for acquiring undulating surface sugarcane acreage based on a remote sensing image. The method comprises the steps that the pattern spot vector diagram and DME grid data of a sugarcane lot are acquired; the slope mean value of the pattern spot vector diagram is acquired according to the DME grid data; according to the slope mean value and a slope threshold value, the pattern spot vector diagram of the sugarcane lot is divided into a flat lot and a slope lot; the area of the flat lot is acquired; micro-face decomposition is carried out on the slope lot to acquire a number of adjacent plane facets, and the area of each plane facet is acquired; the areas of a number of plane facets are added to acquire the area of the slope lot; and the areas of two lots are acquired to acquire the area of the sugarcane lot. According to the invention, a high-precision digital elevation model is combined to carry out the topographic judgment of the sugarcane lot according to a plane-range vector acquired through remote sensing; fast fitting calculation of the real sugarcane acreage is realized through important terrain and boundary feature extraction; and an accurate data support is provided for policy formulation and production and management decision-making.

Description

technical field [0001] The invention relates to the field of sugarcane planting supports, in particular to a method and device for acquiring sugarcane planting areas on undulating surfaces based on remote sensing images. Background technique [0002] Sugarcane is an important sugar crop in my country. It is mainly distributed in southern provinces such as Guangxi, Yunnan, Hainan and Guangdong. Among them, Guangxi's sugarcane planting area and sucrose production have accounted for more than 60% of the country for a long time, ranking first in the country. In recent years, sugarcane planting has experienced large fluctuations. Accurately grasping the sugarcane planting area and changes is of great significance for government decision-making and sugar production management. At present, remote sensing technology has become a powerful means of monitoring sugarcane planting area. However, in the past, most of the areas obtained by remote sensing area monitoring were planar project...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a method and device for obtaining the planting area of ​​sugarcane on the undulating surface based on remote sensing images, so as to overcome the shortcomings of the traditional method of calculating the planting area of ​​crops, which is inefficient and results in large errors

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