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Statistical method of irrigated area based on medium-resolution image in high-resolution image supervision

A high-resolution image and irrigation area technology, which is applied in the field of irrigation area statistics based on high-resolution image supervision and medium-resolution images, achieves the effects of strong adaptability, simple method and great application significance.

Active Publication Date: 2018-08-21
CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The object of the present invention is to provide a kind of irrigated area statistical method based on the resolution image in the high-resolution image supervision, thereby solving the aforementioned problems existing in the prior art

Method used

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  • Statistical method of irrigated area based on medium-resolution image in high-resolution image supervision
  • Statistical method of irrigated area based on medium-resolution image in high-resolution image supervision
  • Statistical method of irrigated area based on medium-resolution image in high-resolution image supervision

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Embodiment 1

[0079] The present invention takes the Bosten River Basin in Xinjiang as an example, performs statistics on the irrigated area of ​​the watershed according to the method described in this application, and finally obtains the identification result.

[0080] The Bosten Lake Basin is located deep in the hinterland of Eurasia, far away from the ocean, showing obvious dry continental climate characteristics. The general characteristics are drought and little rain, large evaporation, many sunny days, long sunshine hours, and abundant light and heat resources. There is a significant difference between the plain area of ​​the basin and the mountainous area with an altitude above 1700m. The plain area has four distinct seasons, but the winter is long and the summer is short. The winter lasts 110-115 days and the summer 56-69 days. There is no summer in the mountainous area all year round, and spring and autumn are connected. There is only a cold half year and a warm half year. The cli...

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Abstract

The invention discloses an irrigation area statistics method based on high-resolution image supervision and medium-resolution images, and relates to the field of water resources management. The method comprises: determining the research area, and obtaining the medium resolution vegetation coverage index satellite image package based on the medium resolution imaging spectrometer in the research area; obtaining the map satellite image package of the research area on several dates in the training year; determining and selecting The total number and types of points; set the rate fixed point and the number of verification points; obtain the vector of each land use type; obtain the vector of any verification point and compare it with the vector of each land use type to obtain the land use type of the verification point; when the verification point When the correct rate of land use type judgment exceeds the threshold, the satellite images of all measured years are processed, and then the irrigated area where the land use type is cultivated land is calculated. The invention gets rid of the field data collection on the ground, realizes the supervised classification and can conveniently and quickly carry out the irrigation area statistics with the frequency of the year.

Description

technical field [0001] The invention relates to the field of water resources management, in particular to a statistical method for irrigation area based on high-resolution image supervision and medium-resolution images. Background technique [0002] Irrigated area statistics based on remote sensing is an indispensable management method for modern agricultural management, and it is also an important part of resource remote sensing. my country has vast land, complex terrain, and small farmers. Information such as irrigated area and crop yield is still obtained through traditional comprehensive reports and sample surveys. These two methods of survey work are heavy, time-consuming and labor-intensive, and are greatly affected by human factors, making it increasingly difficult to adapt to the needs of macro decision-making and management. [0003] With the development of remote sensing technology, it is feasible and practical to use remote sensing to conduct large-scale irrigate...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K9/00G06T7/62
CPCG06T2207/10032G06V20/188
Inventor 雷晓辉王旭王子昂秦韬王超王浩蒋云钟张靖文张珮纶
Owner CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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