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Physical building quantity damage evaluation method based on remote sensing multi-spectral images

A multi-spectral image and building technology, applied in the field of remote sensing image processing, can solve the problem of heavy workload of visual interpretation

Active Publication Date: 2015-01-07
MIN OF CIVIL AFFAIRS NAT DISASTER REDUCTION CENT +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method makes use of image texture features, but the workload of visual interpretation in the later stage is still very large

Method used

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  • Physical building quantity damage evaluation method based on remote sensing multi-spectral images
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  • Physical building quantity damage evaluation method based on remote sensing multi-spectral images

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Embodiment Construction

[0015] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0016] figure 1 It is a flow chart of assessing physical damage of buildings based on remote sensing multi-spectral images according to the present invention.

[0017] In step S11, a multi-temporal remote sensing multi-spectral image of the same area can be acquired. Satellite remote sensing images of the same area taken by the Ziyuan No. 3 satellite in the first phase (eg, before the earthquake) and in the second phase (eg, after the earthquake) can be used. The images acquired at the first time phase and the second time phase respectively may be referred to as a first multispectral image and a second multispectral image. In order to perform subsequent chang...

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Abstract

The invention discloses a physical building quantity damage evaluation method based on remote sensing multi-spectral images. The method comprises the steps that firstly, the multi-temporal and multi-spectral remote sensing images obtained before and after a disaster are preprocessed, then, a random-walk-based change detection method is adopted for obtaining a binary mask image, the binary mask image is utilized for conducting target detection on the image obtained before the disaster so as to extract a building, and finally a physical building quantity damage evaluation result is given. According to the physical building quantity damage evaluation method, the physical building quantity damage condition can be rapidly, accurately and automatically detected, and the forceful data support is provided for disaster situation evaluation and disaster decision making.

Description

technical field [0001] The invention relates to the field of remote sensing image processing and the field of building damage assessment, in particular to a method for assessing physical damage of buildings based on remote sensing multi-spectral images. Background technique [0002] my country is one of the countries most severely affected by natural disasters in the world. There are many types of disasters, wide distribution, high frequency of occurrence, deep damage, and heavy losses, which have a serious impact on economic and social development and the safety of people's lives and property, and also put forward higher requirements for the rapid and efficient decision-making of disaster-related departments . Disaster assessment is one of the first and most important links in the disaster relief process. The disaster assessment results it provides will provide objective basis for decision-making departments to formulate disaster relief and disaster mitigation measures, so...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/00
CPCG06T7/0004G06T2207/10036
Inventor 温奇范一大刘庆杰张薇李苓苓汤童林月冠王薇崔燕黄河王平王蕴红
Owner MIN OF CIVIL AFFAIRS NAT DISASTER REDUCTION CENT
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