Active and passive remote sensing data-based rural residential land extraction method

A technology of remote sensing data and extraction method, which is applied in the field of remote sensing image processing, can solve problems such as mixing and distinguishing, and achieve the effect of improving accuracy

Inactive Publication Date: 2015-05-13
BEIJING NORMAL UNIVERSITY
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Problems solved by technology

Existing studies still have some deficiencies in the extraction of rural residential land: in medium-resolution optical images, the unused land and fallow bare land around rural residential areas have similar spectra to the residential land, resulting in the confusion of different objects with the same

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  • Active and passive remote sensing data-based rural residential land extraction method
  • Active and passive remote sensing data-based rural residential land extraction method
  • Active and passive remote sensing data-based rural residential land extraction method

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Embodiment Construction

[0036] The present invention will be further elaborated below in conjunction with the accompanying drawings and embodiments.

[0037] The research area of ​​the present invention is located at the junction of Taocheng District and Shenzhou City, Hengshui City, Hebei Province, and the range of 10km * 10km is selected as figure 2 As shown, the land use types cover cultivated land, water body, forest land, unused land, and urban and rural, industrial and mining land, and residential land. Among them, urban and rural, industrial and mining land, and residential land are mainly rural residential areas, and the cultivated land crops are mainly winter wheat and summer corn. figure 2 (A) In the distribution map of rural residential areas, the rural residential areas are loosely distributed and of different sizes. Through the visual interpretation of the high-resolution images, the study area contains a total of 38 rural residential areas. The data used in the research is the OLI ima...

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Abstract

The invention discloses an active and passive remote sensing data-based rural residential land extraction method. The method comprises the following steps: (1) acquiring data and preprocessing; (2) calculating a normalized differential vegetation index; (3) calculating a normalized difference build-up index; (4) calculating a POLSAR (Polarimetric Synthetic Aperture Radar) dihedral angle scattering component; (5) performing maximum likelihood classification. According to the method, the optical remote sensing and microwave remote sensing information are comprehensively applied, the difference between ground and an object can be more fully embodied through supplementation of advantages and disadvantages of the two kinds of remote sensing information, and the accuracy for rural residential land extraction is greatly improved.

Description

technical field [0001] The invention relates to remote sensing image processing technology, in particular to a method for extracting land for rural residential areas based on active and passive remote sensing data. Background technique [0002] Extracting the land use distribution and construction scale of rural residential areas is of great significance for saving cultivated land, rationally developing and utilizing land resources, improving rural ecological environment, promoting urbanization development, and building new countryside. Remote sensing technology is based on physical means, mathematical methods and geographical analysis. It is a comprehensive application technology that can identify and extract surface information macroscopically, dynamically and quickly. Using remote sensing technology to extract information on urban and rural residential areas and building land has been extensively studied at home and abroad. The land used for rural settlements is small in...

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Application Information

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IPC IPC(8): G06K9/46G06K9/62
CPCG06V20/176G06V10/462G06F18/24
Inventor 李天祺朱秀芳潘耀忠
Owner BEIJING NORMAL UNIVERSITY
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