Autumn harvest main crop information extraction method and system based on remote sensing data
A remote sensing data and information extraction technology, applied in the field of satellite remote sensing, can solve problems such as the inability to make full use of the spectral change process, low precision of various crops, and heavy workload of multiple separate classifications, so as to reduce workload and reduce Labor cost, effect of improving classification accuracy
Pending Publication Date: 2020-06-09
四维高景卫星遥感有限公司
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[0008] The technical problem solved by the present invention is: to overcome the deficiencies of the prior art, to provide a method and system for extracting the main crop information of the autumn harvest based on remote sensing data, and to solve the problem of low precision and multiple separate classification tasks of extracting multiple crops based on remote sensing data The problem of the large amount and the inability to maximize the use of the spectral change process under the same surface feature time series under multi-temporal phases
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[0037] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.
[0038] This embodiment provides a method for extracting information on major crops in autumn harvest based on remote sensing data, the method comprising the f...
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The invention discloses an autumn harvest main crop information extraction method and system based on remote sensing data. According to the invention, wave band merging is carried out on multi-temporal remote sensing images; training samples are selected by combining phenological characteristics, spectral characteristics, texture characteristics and the like of all crops, a B-P neural network method is adopted to supervise and classify remote sensing data, classification results are classified and then processed, and information extraction of main crops such as summer corn, cotton, peanuts, soybeans and middle-aged rice of all counties and the whole province in a research area is achieved. Through multi-temporal remote sensing image wave band combination, under the condition that the number of training samples is reduced, the crop classification precision is improved, the labor cost in the classification process is reduced, and the working efficiency is improved.
Description
technical field [0001] The invention belongs to the technical field of satellite remote sensing, and in particular relates to a method and system for extracting information of main autumn harvest crops based on remote sensing data. Background technique [0002] Timely and accurate acquisition of crop area and spatial distribution can provide a scientific basis for the forecast and evaluation of agricultural production output, grain price forecast, and national grain production layout and planning. The crop information can be separated from the remote sensing images by using the spectral characteristics of the crops and the index factor suitable for extracting different ground object types. At present, crop information extraction can be mainly divided into single-temporal and multi-temporal information extraction methods. The spatial distribution of crops is extracted by using single-temporal images of the critical period of crop growth. Due to the intersection of different ...
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Login to View More IPC IPC(8): G06K9/00G06K9/62G06N3/08
CPCG06N3/084G06V20/188G06F18/214
Inventor 高青山李翠翠彭义峰李俊杰周经理李晓进
Owner 四维高景卫星遥感有限公司