Extraction method of winter wheat plantation information

Abstract

The invention relates to an extraction method of winter wheat plantation information. The extraction method of winter wheat plantation information includes the steps: based on the phenological characteristic of overwintering of winter wheat, determining and obtaining the remote sensing image data of the period of seedling establishment of winter beat and the remote sensing image data of the periodof naked land of winter wheat, and respectively preprocessing the two periods of remote sensing image data; combining with the historical cultivated land vector data, determining the cultivated landrange, and performing multiple-dimensional segmentation on the cultivated land range; respectively calculating the two periods of remote sensing image data, and obtaining the normalization vegetationindexes of two periods of winter wheat; and combining with the cultivated land range and the normalization vegetation indexes of two periods of winter wheat, automatically determining the thresholds of the normalization vegetation indexes, and realizing automatic extraction of the winter wheat plantation information. The extraction method of winter wheat plantation information utilizes the historical cultivated land vector data, fully excavates the geographical information of the early stage, has the advantages of simple principle, high applicability, high precision and processed technology, can realize automatic extraction and can be applied to area monitoring of the winter wheat cultivated area widely.

Description

technical field [0001] The invention belongs to the technical field of remote sensing applications, and in particular relates to a method for extracting winter wheat planting information. Background technique [0002] Wheat is one of the main food crops in my country, and the output of wheat is directly related to national food security and social stability. Wheat is divided into winter wheat and spring wheat, and winter wheat is mainly planted in my country. Timely and accurate extraction of winter wheat planting information is the basis for obtaining winter wheat planting area and forecasting yield. With the continuous development of remote sensing platforms and the continuous improvement of remote sensing image resolution, remote sensing technology is more and more widely used in the field of winter wheat monitoring. [0003] The types of crops in our country are complex and diverse. How to use remote sensing technology to identify winter wheat from many crops and impro...

AI Technical Summary

Problems solved by technology

Researchers have carried out a lot of research work, but the related methods are not conducive to large-scale commercial application

[0004] Since the extraction of winter wheat planting information by simple remote sensing methods cannot meet the accuracy requirements, in most of the current research, the remote sensing extraction results of winter wheat planting area are mostly verified by statistical data, and the accuracy of the statistical data itself cannot be guaranteed. In actual business applications, large-scale, fast and accurate extraction of winter wheat information has become the key

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