Method and device for identifying effective cultivated land, storage medium and processor

Abstract

The invention relates to the field of cultivated land identification, and specifically relates to a method and a device for identifying effective cultivated land. According to the method and the device, Landsat TM remote sensing data of a long time sequence are used as a data source; Slope SLOPE data are used as auxiliary data. A normalized difference vegetation index NDVI is adopted as a classification feature. The phenological difference of crops on the agricultural cultivated land is taken as a basis; difference between crop interspecific planting periods is obtained; Characteristic differences such as spectral differences are reflected on a distribution change rule of time sequence NDVI data. An object-oriented decision classification rule combining a normalized difference vegetation index NDVI with other classification characteristics is designed. Spatial distribution information of part of crops on the agricultural cultivated land, especially the agricultural cultivated land in the western region, can be extracted. According to the method, the cultivation condition can be known, the influence of different crops in the complex planting period does not need to be considered, data sources needed by the method are easy to obtain, the data size needed to be processed is small, the classification rule is simple, the working efficiency is high, and the method is also suitable for regions with crushed cultivated land distribution.

Description

technical field [0001] The present invention relates to the field of cultivated land identification, in particular to a method and device for identifying effective cultivated land, a storage medium and a processor. Background technique [0002] It is generally believed that the NDVI time-series data of crops have a good correlation with their morphological characteristics, biochemical parameters and phenological information. Using NDVI time-series data can obtain crop category information on arable land. Therefore, multi-temporal time-series remote sensing image data is used for target crop Information identification is one of the most commonly used methods at present. However, due to the uneven distribution of crop phenology information in each time period, it is customary to use the best time-phase combination of crops for crop identification, which mainly uses the intermediate difference between crop spectrum and phenological information. [0003] At present, there are n...

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Problems solved by technology

[0005] Embodiments of the present invention provide a method and device for identifying effective cultivated land, so as to at least solve the technical problem of low identification accuracy of existing agricultural cultivated land crop identification methods

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