Extraction method and system for target water body
A water body and target technology, which is applied in the extraction field of target water bodies, can solve the problems affecting the extraction accuracy and poor accuracy of target water bodies, and achieves the effects of good accuracy, improved stability and high extraction accuracy.
Inactive Publication Date: 2017-11-14
SATELLITE ENVIRONMENT CENT MINIST OF ENVIRONMENTAL PROTECTION +1
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[0005] In view of this, the present invention provides a method and system for extracting a target water body to solve the problem in the prior art that the accuracy of target water body extraction is affected due to the poor accuracy of the segmentation threshold
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[0046] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0047] An embodiment of the present invention provides a method for extracting a target water body, the flow chart of which is as follows figure 2 shown, including:
[0048] S201: Obtain vector data and remote sensing image data of the target water body;
[0049]In the inland area where the target water body is to be extracted, such as the Himalayas, different surface features can be divided into target water bodies and non-target water bodies, wherein the n...
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The present invention provides a method and system for extracting a target water body, comprising: acquiring vector data and remote sensing image data of the target water body; expanding the vector data by an equal area according to the geometric shape of the target water body, and generating a remote sensing image of the expanded vector data Statistical histogram, the expanded vector data boundary includes land and water bodies of equal area; obtain the initial threshold according to the statistical histogram and the preset threshold statistical interval; determine whether the initial threshold is the boundary value of the prior threshold range, if If yes, no longer extract the target water body, if no, judge whether the initial threshold is the minimum value of the statistical histogram, if yes, no longer extract the target water body, if no, then the initial threshold is the optimal threshold ; Extracting the target water body with the optimal threshold as the water and land segmentation threshold. The method and system for extracting a target water body provided by the present invention are simple, efficient, accurate, and have high extraction precision.
Description
technical field [0001] The invention relates to the technical field of environmental monitoring, in particular to a method and system for extracting a target water body. Background technique [0002] Water resources are the foundation of human survival and development, and its importance is self-evident, among which inland water bodies are most closely related to human society. Since the water resource investigation, water quality monitoring and water resource protection work all need to determine the location and area of the water body, how to extract the target water body has become one of the focuses of current research. [0003] Among them, remote sensing technology has been widely used in the research of lake water body due to its advantages of fast speed, low cost and high efficiency. The use of remote sensing technology to extract target water bodies is to use the difference in spectral radiation between water bodies and land to identify and distinguish them. At p...
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IPC IPC(8): G06K9/46
CPCG06V20/194G06V20/13G06V10/507
Inventor 朱利吴传庆张方方张浩彬李俊生申茜殷守敬马万栋
Owner SATELLITE ENVIRONMENT CENT MINIST OF ENVIRONMENTAL PROTECTION