Extraction and Mining Method of Remote Sensing Earthquake Damage Information Based on Pixels

An information extraction and remote sensing technology, applied in seismic signal processing, image analysis, image data processing, etc., can solve the problems of heavy workload, high cost, long time for collection and reorganization, etc., to achieve the effect of improving efficiency and ensuring accuracy

Inactive Publication Date: 2011-12-14
中国土地勘测规划院
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Problems solved by technology

[0004] Although manual visual interpretation of earthquake damage information has great advantages in the accuracy and reliability of information acquisition, it is difficult to meet the requirements due to heavy workload, low efficiency, high cost, and long time for information interpretation, collection, and compilation. Application requirements for timeliness

Method used

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specific Embodiment approach

[0012] The pixel-based remote sensing earthquake damage information extraction and mining method of the present invention, its preferred specific implementation, includes the steps:

[0013] First of all, for pre-disaster and post-disaster images of different time phases, the change area is automatically found through the method of spectral variation and principal component fusion;

[0014] Then, use the double-threshold region growing algorithm to segment the image, segment out the change area and obtain the change information binary image;

[0015] Finally, artificial visual interpretation is performed on the segmented change area and change information, and the earthquake damage information is extracted.

[0016] The automatic discovery of the change region through the method of spectral variation and principal component fusion may include:

[0017] The pre-disaster IKONOS image and the post-disaster QUICKBIRD image are respectively subjected to principal component transfo...

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Abstract

The invention discloses a pixel-based remote sensing earthquake damage information extraction and mining method. According to remote sensing images of different time phases before and after the disaster, firstly, the change area is automatically found through the method of spectral variation and principal component fusion; and then the double threshold area is used The growth algorithm segments the change image to obtain the binary image of the change information; finally, the binary image of the segmented change area is interpreted manually and the earthquake damage information is extracted. It solves the problems of heavy workload and long investigation cycle for manual interpretation of earthquake disaster change information, improves efficiency, and ensures sufficient accuracy at the same time.

Description

technical field [0001] The invention relates to a method for acquiring earthquake damage information, in particular to a pixel-based remote sensing earthquake damage information extraction and mining method. Background technique [0002] The rapid extraction of earthquake damage information and the rapid assessment of earthquake damage loss are important basic information for disaster relief decision-making. [0003] In the prior art, the extraction and evaluation of earthquake damage information is mainly through the method of manual visual interpretation. [0004] Although manual visual interpretation of earthquake damage information has great advantages in the accuracy and reliability of information acquisition, it is difficult to meet the requirements due to heavy workload, low efficiency, high cost, and long time for information interpretation, collection, and compilation. Application requirements for timeliness. Contents of the invention [0005] The purpose of the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01V1/28G06T7/00
Inventor 王静吴剑何挺刘爱霞
Owner 中国土地勘测规划院
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