A Method for Recognition and Extraction of Water Body in Remote Sensing Image

A technology of remote sensing images and water bodies, applied in scene recognition, character and pattern recognition, instruments, etc., to achieve high extraction efficiency, good precision, and overcome extraction limitations

Active Publication Date: 2019-10-25
CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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Problems solved by technology

[0011] The technical problem to be solved by the present invention is how to design a solution that can quickly realize the one-time intelligent water extraction of all scales and above in a large-scale multi-water body area

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  • A Method for Recognition and Extraction of Water Body in Remote Sensing Image
  • A Method for Recognition and Extraction of Water Body in Remote Sensing Image

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Embodiment Construction

[0048] The present invention extracts water body information from data with only RGB bands, and proposes a water body tracking identification and extraction algorithm for the phenomenon of large-scale multi-water body regions, so as to realize the one-time intelligent identification and extraction of water body information of all water bodies above the scale in large-scale multi-water body regions. Overcome the limitations of single water body remote sensing retrieval extraction. The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0049]Such as figure 1 As shown, a kind of remote sensing image water body identification extraction method provided by the present invention comprises the following steps:

[0050] Step S10, considering that the remote sensing image used may not have a near-infrared band, it is first necessary to use RGB values ​​to binarize the remote sensing image to obtain a binarized ...

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Abstract

The invention discloses a method for identifying and extracting water bodies from remote sensing images, comprising: using RGB values ​​to binarize the remote sensing images to obtain binarized images; traversing the binarized images, using the spectral information of each pixel as a feature quantity Determine the pixel points belonging to the water body and use them as seed points; track the pixel points with the same spectral information as the seed point based on the 4-neighborhood method of each seed point, and perform Marking; the automatic chain code marks the same pixel, and obtains multiple water body areas with different marks, realizing the simultaneous identification and extraction of integrated multi-water body information in large-scale multi-water body areas. The invention realizes one-time intelligent individual identification and extraction of all water bodies above the scale in a large-scale multi-water body area, overcomes the limitation of single water body remote sensing inversion extraction, and has high extraction efficiency, simple operation and good precision.

Description

technical field [0001] The invention relates to water body information extraction technology, in particular to a method for remote sensing image water body identification and extraction. Background technique [0002] Water is an important part of the ecosystem. The ability to quickly and accurately extract water body information has an important impact on water resource allocation, flood control and drought relief, and environmental detection. [0003] With the development of remote sensing technology, the resolution of remote sensing images is getting higher and higher, and the methods of water body information extraction are becoming more and more diverse. There are roughly the following categories: [0004] (1) Pixel-based water body information extraction for low-resolution images, such as supervised classification, maximum likelihood method, etc.; [0005] (2) The method of setting the threshold value by single band is used to extract the water body information; [0...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K9/00G06K9/34G06K9/20
CPCG06V20/13G06V10/22G06V10/267
Inventor 桑学锋翟正丽王建华王浩戴继光赵勇柳长顺杨梅吴娟
Owner CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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