CN106254826A - A kind of earthquake intensity appraisal procedure based on video analysis - Google Patents

A kind of earthquake intensity appraisal procedure based on video analysis Download PDF

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Publication number
CN106254826A
CN106254826A CN201610637307.1A CN201610637307A CN106254826A CN 106254826 A CN106254826 A CN 106254826A CN 201610637307 A CN201610637307 A CN 201610637307A CN 106254826 A CN106254826 A CN 106254826A
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CN
China
Prior art keywords
video
photographic head
earthquake intensity
appraisal procedure
procedure based
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201610637307.1A
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Chinese (zh)
Inventor
安鹏
姚拓中
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Ningbo University of Technology
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Ningbo University of Technology
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Publication date
Application filed by Ningbo University of Technology filed Critical Ningbo University of Technology
Priority to CN201610637307.1A priority Critical patent/CN106254826A/en
Publication of CN106254826A publication Critical patent/CN106254826A/en
Pending legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00Television systems
    • H04N7/18Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
    • H04N7/181Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast for receiving images from a plurality of remote sources
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01VGEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V1/00Seismology; Seismic or acoustic prospecting or detecting
    • G01V1/003Seismic data acquisition in general, e.g. survey design
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01VGEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V1/00Seismology; Seismic or acoustic prospecting or detecting
    • G01V1/28Processing seismic data, e.g. analysis, for interpretation, for correction
    • G01V1/30Analysis

Abstract

The present invention discloses a kind of earthquake intensity appraisal procedure based on video analysis, and it is by the video content of widely distributed photographic head picked-up, and the figure in analysis video content is quickly to obtain earthquake intensity.The beneficial effect that the present invention has low cost, earthquake intensity assessment is fast.

Description

A kind of earthquake intensity appraisal procedure based on video analysis
Technical field
The present invention relates to earthquake intensity assessment technology field, particularly relate to the assessment of a kind of earthquake intensity based on video analysis Method.
Background technology
Quickly the judging of earthquake intensity is carried out significant for the disaster relief work of small earthquakes.But according to existing Technical merit, the condition of a disaster assessment after the earthquake is that one more complicated and work that quantities is huge, time-consuming and laborious. After the earthquake of Wenchuan, China Seismology Bureau organizes a large amount of expert to go to the areas such as Sichuan, Gansu, Shaanxi, Chongqing, Yunnan, Ningxia to open Exhibition field investigation, investigation area reaches 500,000 kilometers, points for investigation more than 4000, just draws out Wenchuan earthquake INTENSITY DISTRIBUTION figure.
Mostly existing appraisal procedure is qualitative evaluation, lacks objectivity of science.And mostly the assessment of existing earthquake intensity is Judge by being distributed in the high sensitivity seismograph of each department, but the signal of high sensitivity seismograph depends on the means of communication of routine, it is impossible in time Signal is exported.And earthquake its measurement data slighter for earthquake intensity is the most accurate.
Prior art also proposes a kind of low cost, highly reliable Real-time Seismic intensity rapid re port system, its Publication No. CN101482620A, it is by arranging multiple earthquake intensity speed report instrument, and transmits data by Beidou navigation.But this kind of side Method need nonetheless remain for additionally arranging multiple instrument, relatively costly and not transmitting data in real time.
Summary of the invention
The technical problem to be solved is, for the above-mentioned deficiency of prior art, proposes one and depends on existing Having the photographic head being distributed in various places, obtained the appraisal procedure of earthquake intensity by video analysis, its cost is relatively low and has backtracking Property, it is possible to accurately feature before contrast shake and after shake.
The present invention solves its technical problem and employed technical scheme comprise that, proposes a kind of earthquake intensity based on video analysis and comments Estimating method, it includes step:
The building depended on when obtaining the seismic region networking video content of photographic head, the installation of each photographic head and Site Type And the geographical position that each photographic head is installed;
All video contents are installed, according to photographic head, the building depended on and Site Type is classified;
According to photographic head, the building depended on and the temporal signatures of Site Type extraction video content are installed;
Earthquake intensity classification is built according to temporal signatures;
According to photographic head, geographical position is installed and draws earthquake intensity scattergram.
Further, when described each photographic head is installed, the building classifications that depends on is: unstable suspension rod, stablize suspension rod, electric wire Bar, single story building, tier building and skyscraper.
Further, Site Type when described each photographic head is installed is categorized as: hard soil or rock, middle pan soil, in soft Soil, weak soil.
Further, described temporal signatures includes: target translational speed and scene fortune in video pictures degree of jitter, video Dynamic speed.
Further, described temporal signatures also includes: each photographic head install time depend on Site Type deformation, respectively take the photograph As head installs the gathering of people degree that geographical position is corresponding.
Further, in described video, target translational speed calculates by the following method: with road zebra crossing as marker, Rock calculating by camera lens and rock angular velocity, calculate acceleration with video time axle.
The present invention is by the existing monitor video content of extraction, by analyzing different building, different place, different geography The video content of the photographic head picked-up of position, analyzes the parameters in contrast earthquake front-and rear-view frequency, fast according to this parameters Speed estimates earthquake intensity, significant for the small earthquakes disaster relief.
Detailed description of the invention
The following is the specific embodiment of the present invention, technical scheme is further described, but the present invention is also It is not limited to these embodiments.
In order to maintain public order, the current Ministry of Public Security is equipped with substantial amounts of monitoring camera throughout the country.Those shootings Head is broken laws and commit crime to maintaining public order, hitting and is played highly important effect.
The video content that the mount message of photographic head self combines camera collection is creatively analyzed by the application, Can quickly analyze earthquake intensity, in order to carrying out of follow-up disaster relief work.
First the application gathers following information: 1, the video content of seismic region networking photographic head;2, when photographic head is installed The building type depended on;3, Site Type when photographic head is installed;4, the geographical position that photographic head is installed.
When earthquake occurs, the video content of the photographic head picked-up in different building types and different place and video Temporal signatures is different, it is thus necessary to classified by photographic head.
In the present embodiment, the building depended on when being installed by photographic head is divided into unstable suspension rod, stablizes suspension rod, electric pole, list Layer building, tier building and the big class of skyscraper six.Site Type when being installed by photographic head is divided into: hard soil or rock, in Pan soil, middle weak soil, the big class of weak soil four.
The matrix of the similar following form of structure:
Video corresponding for element each in matrix is gathered in different regions to build video content storehouse respectively.
Extracting the temporal signatures in video content storehouse, emphasis includes: the vibrant characteristic of video in time domain, is i.e. estimated by motion The degree of jitter of video pictures in meter analysis certain time period;The translational speed of target in video, i.e. moving target is for earthquake intensity The speed (such as building collapsing speed) of different average running speeds and part scene motion.Built by features described above Earthquake intensity grader.
In a preferred embodiment, earthquake intensity grader such as following table builds:
Every description in above table all can be drawn by the video content analysis of specific camera head.
Earthquake intensity and then the earthquake of comprehensive analysis this area that in matrix, each element is corresponding is obtained according to above-mentioned earthquake intensity classification chart Earthquake intensity.By earthquake intensity and then the INTENSITY DISTRIBUTION figure of drafting earthquake areas of above-mentioned analytical diverse geographic location.
Further, in the present embodiment, also can automatically calculate target translational speed in video, during to reduce artificial observation Between.It mainly calculates with road zebra crossing for marker.Width and the spacing of road zebra crossing are marked by GB5768-2009 Standard defines, i.e. road zebra crossing width should be 45 centimetres, spacing 60 centimetres.With this standard figures as reference, mirror can be passed through Head rocks calculating and rocks angular velocity, then calculates acceleration to draw personnel's translational speed by video time axle.
Video analysis assessment earthquake intensity is used to have the advantage that
1, monitor video has complete time shaft, it is possible to resolve the comparison problem before shake and after shake;
2, monitoring camera has relatively accurate geography information;
3, the screen resolution of monitoring camera picked-up improves constantly, the analysis that can more refine;
4, the monitoring data before 3-6 month can be recalled, find macroscopic premonitory;
Situation is destroyed when shake 5, can be recorded truly;
6, in earthquake, crowd behaviour can be that emergency management and rescue provide foundation.
Specific embodiment described herein is only to present invention spirit explanation for example.Technology neck belonging to the present invention Described specific embodiment can be made various amendment or supplements or use similar mode to replace by the technical staff in territory Generation, but without departing from the spirit of the present invention or surmount scope defined in appended claims.

Claims (6)

1. an earthquake intensity appraisal procedure based on video analysis, it is characterised in that: include step:
Obtain the seismic region networking video content of photographic head, each photographic head when installing the building that depended on and Site Type and The geographical position that each photographic head is installed;
All video contents are installed, according to photographic head, the building depended on and Site Type is classified;
According to photographic head, the building depended on and the temporal signatures of Site Type extraction video content are installed;
Earthquake intensity classification is built according to temporal signatures;
According to photographic head, geographical position is installed and draws earthquake intensity scattergram.
Earthquake intensity appraisal procedure based on video analysis the most according to claim 1, it is characterised in that: described each shooting When head is installed, the building classifications that depends on is: unstable suspension rod, stablizes suspension rod, electric pole, single story building, tier building and high level and builds Build.
Earthquake intensity appraisal procedure based on video analysis the most according to claim 1 and 2, it is characterised in that: described respectively Site Type when photographic head is installed is categorized as: hard soil or rock, middle pan soil, middle weak soil, weak soil.
Earthquake intensity appraisal procedure based on video analysis the most according to claim 1, it is characterised in that: described time domain is special Levy and include: target translational speed and scene motion speed in video pictures degree of jitter, video.
Earthquake intensity appraisal procedure based on video analysis the most according to claim 4, it is characterised in that: described time domain is special Levy and also include: the Site Type deformation that each photographic head depends on when installing, each photographic head install the personnel that geographical position is corresponding Concentration class.
Earthquake intensity appraisal procedure based on video analysis the most according to claim 4, it is characterised in that: in described video Target translational speed calculates by the following method: with road zebra crossing as marker, rocks calculating by camera lens and rocks angular velocity, Acceleration is calculated with video time axle.
CN201610637307.1A 2016-08-05 2016-08-05 A kind of earthquake intensity appraisal procedure based on video analysis Pending CN106254826A (en)

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Application Number Priority Date Filing Date Title
CN201610637307.1A CN106254826A (en) 2016-08-05 2016-08-05 A kind of earthquake intensity appraisal procedure based on video analysis

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610637307.1A CN106254826A (en) 2016-08-05 2016-08-05 A kind of earthquake intensity appraisal procedure based on video analysis

Publications (1)

Publication Number Publication Date
CN106254826A true CN106254826A (en) 2016-12-21

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CN109782334A (en) * 2019-03-12 2019-05-21 夏仕安 It is a kind of for assessing the monitoring method of earthquake intensity in real time
GB2605482A (en) * 2020-12-22 2022-10-05 Ibm Earthquake detection and response via distributed visual input

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109782334A (en) * 2019-03-12 2019-05-21 夏仕安 It is a kind of for assessing the monitoring method of earthquake intensity in real time
GB2605482A (en) * 2020-12-22 2022-10-05 Ibm Earthquake detection and response via distributed visual input
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Application publication date: 20161221