CN113012398A - Geological disaster monitoring and early warning method and device, computer equipment and storage medium - Google Patents
Geological disaster monitoring and early warning method and device, computer equipment and storage medium Download PDFInfo
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- CN113012398A CN113012398A CN202110194162.3A CN202110194162A CN113012398A CN 113012398 A CN113012398 A CN 113012398A CN 202110194162 A CN202110194162 A CN 202110194162A CN 113012398 A CN113012398 A CN 113012398A
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Abstract
The embodiment of the invention discloses a geological disaster monitoring and early warning method, a geological disaster monitoring and early warning device, computer equipment and a storage medium. The method comprises the following steps: constructing a three-dimensional live-action model of the region to be detected based on the oblique photographic image; acquiring laser point cloud data of the area to be detected; determining the landform form of the area to be detected according to the three-dimensional live-action model and the laser point cloud data; determining a disaster hidden danger area according to the landform form; carrying out underground three-dimensional imaging analysis on the disaster hidden danger area by using a micro-seismic monitoring system to obtain an underground structure form of the disaster hidden danger area; and when the change amplitude of the underground structure form exceeds a preset amplitude, giving out an early warning. The invention realizes the technical effects of improving the accuracy of geological disaster monitoring and early warning the geological disaster.
Description
Technical Field
The invention relates to the technical field of geological disaster detection, in particular to a geological disaster monitoring and early warning method, a geological disaster monitoring and early warning device, computer equipment and a storage medium.
Background
The geological disasters in China are widely distributed, frequently occur and are various in types, so that the geological disasters cause great loss to national economic construction and people's lives and properties every year, and the national attention has been paid to the monitoring and early warning work of address disasters.
At present, the investigation work of regional address disasters is mainly carried out by using a remote sensing technology, visual interpretation or man-machine interactive interpretation is mainly used, the application efficiency and reproducibility are directly influenced by the quality of a visual effect, manual operation is mainly relied on, the speed is low, the limitation of the environment is large, the accuracy of monitoring the hidden danger of the geological disaster is not high, the accuracy of monitoring the geological disaster is improved, and early warning of the geological disaster is a problem which needs to be solved urgently at present.
Disclosure of Invention
The embodiment of the invention aims to provide a geological disaster monitoring and early warning method, a geological disaster monitoring and early warning device, computer equipment and a storage medium, which are used for improving the accuracy of geological disaster monitoring and early warning geological disasters.
In order to achieve the above purpose, the embodiment of the present invention adopts the following technical solutions:
in a first aspect, an embodiment of the present invention provides a geological disaster monitoring and early warning method, where the method includes: constructing a three-dimensional live-action model of the region to be detected based on the oblique photographic image; acquiring laser point cloud data of the area to be detected; determining the landform form of the area to be detected according to the three-dimensional live-action model and the laser point cloud data; determining a disaster hidden danger area according to the landform form; carrying out underground three-dimensional imaging analysis on the disaster hidden danger area by using a micro-seismic monitoring system to obtain an underground structure form of the disaster hidden danger area; and when the change amplitude of the underground structure form exceeds a preset amplitude, giving out an early warning.
In a second aspect, an embodiment of the present invention provides a geological disaster monitoring and early warning device, where the device includes a construction module, an acquisition module, a landform form shape determination module, a preset region determination module, an analysis module, and an early warning module. The construction module is used for constructing a three-dimensional live-action model of the area to be detected based on the oblique photographic image; the acquisition module is used for acquiring laser point cloud data of the area to be detected; the landform form shape determining module is used for determining the landform shape of the area to be detected according to the three-dimensional real scene model and the laser point cloud data; the preset region determining module is used for determining a disaster hidden danger region according to the landform form; the analysis module is used for carrying out underground three-dimensional imaging analysis on the disaster hidden danger area by using a micro-seismic monitoring system to obtain an underground structure form of the disaster hidden danger area; and the early warning module is used for sending out early warning when the change amplitude of the underground structure form exceeds a preset amplitude.
In a third aspect, an embodiment of the present invention further provides a computer device, where the computer device includes a memory and a processor, where the memory stores a computer program, and when the processor executes the computer program, the geological disaster monitoring and early warning method according to the first aspect is implemented.
In a fourth aspect, the embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the geological disaster monitoring and early warning method according to the first aspect is implemented.
Compared with the prior art, the embodiment of the invention provides a geological disaster monitoring and early warning method, a geological disaster monitoring and early warning device, computer equipment and a storage medium, and the method comprises the steps of firstly, constructing a three-dimensional real-scene model of a region to be detected based on an oblique photographic image; the method comprises the steps of obtaining laser point cloud data of the area to be detected, determining the landform form of the area to be detected according to the three-dimensional live-action model and the laser point cloud data, determining a disaster hidden danger area according to the landform form, finally carrying out underground three-dimensional imaging analysis on the disaster hidden danger area by using a micro-seismic monitoring system to obtain the underground structure form of the disaster hidden danger area, and sending early warning when the change amplitude of the underground structure form exceeds a preset amplitude. Through the visual vision of the three-dimensional live-action model, the efficiency and the accuracy of accurate interpretation work are improved, the laser point cloud data are used as one of the bases for determining the landform form shape of the region to be detected, the interpretation accuracy is improved, and the technical effect of improving the accuracy of geological disaster monitoring is achieved. The method comprises the steps of carrying out underground three-dimensional imaging analysis on a disaster hidden danger area, monitoring the change of the underground structural form of the disaster hidden danger area in real time, sending out early warning when the change amplitude of the underground structural form exceeds a preset amplitude, realizing the technical effect of early warning on geological disasters, and reducing casualties caused by sudden geological disasters, wherein the early warning has accuracy and advance.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings required to be used in the embodiments will be briefly described below, and it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope of the present invention. Like components are numbered similarly in the various figures.
Fig. 1 is a schematic block diagram illustrating a flow of steps of a geological disaster monitoring and early warning method provided by an embodiment of the present application;
fig. 2 is a schematic block diagram illustrating a flow of sub-steps of S110 in a geological disaster monitoring and early warning method provided by an embodiment of the present application;
fig. 3 is a schematic block diagram illustrating a flow of sub-steps of S120 in a geological disaster monitoring and early warning method provided by an embodiment of the present application;
fig. 4 is a schematic block diagram illustrating a flow of sub-steps of S150 in a geological disaster monitoring and early warning method provided by an embodiment of the present application;
fig. 5 shows a block diagram of a schematic structure of a geological disaster monitoring and early warning device provided by the embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
Hereinafter, the terms "including", "having", and their derivatives, which may be used in various embodiments of the present invention, are only intended to indicate specific features, numbers, steps, operations, elements, components, or combinations of the foregoing, and should not be construed as first excluding the existence of, or adding to, one or more other features, numbers, steps, operations, elements, components, or combinations of the foregoing.
Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which various embodiments of the present invention belong. The terms (such as those defined in commonly used dictionaries) should be interpreted as having a meaning that is consistent with their contextual meaning in the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein in various embodiments of the present invention.
Example 1
Referring to fig. 1, fig. 1 is a schematic block diagram illustrating a flow of steps of a geological disaster monitoring and early warning method provided by an embodiment of the present application.
As shown in fig. 1, the geological disaster monitoring and early warning method provided by the embodiment of the application includes S110 to S160.
S110: and constructing a three-dimensional real scene model of the region to be detected based on the oblique photographic image.
In the present embodiment, the oblique photography image is acquired by the oblique photography technique. The oblique photography technology acquires rich top surfaces of buildings and high-resolution textures for side viewing by carrying a plurality of sensors on the same flight platform and acquiring images from five different angles such as one vertical angle, four oblique angles and the like. The oblique photography technology not only can truly reflect the ground object condition and acquire the object texture information with high precision, but also can generate a real three-dimensional real scene model through advanced positioning, fusion, modeling and other technologies. As shown in fig. 2, the method for constructing a three-dimensional live-action model of a region to be measured based on oblique photographic images specifically includes the following steps:
s111: and acquiring a ground control point image.
Specifically, the ground control point may be understood as an object point photographed by the drone, and the ground control point may be one or more, which is not limited herein. Shooting the ground control point through the unmanned aerial vehicle, and acquiring a ground control point image.
S112: and preprocessing the oblique photographic image to obtain a preprocessed oblique photographic image, wherein the preprocessing comprises light homogenizing and color homogenizing and distortion correction processing.
In the present embodiment, the oblique photographic image includes camera parameter information and latitude and longitude information. And importing the oblique photographic image into software to obtain camera parameter information and longitude and latitude information. For example, the oblique shot image is imported into matlab software, and the camera calibration tool box is used to calibrate the camera, thereby obtaining camera parameter information. The camera parameter information includes information such as a pixel, an image frame, a focal length, a principal point, and a rotation parameter of each camera. By acquiring the longitude and latitude information and the attitude angle information of each photo, the attitude angle information of the unmanned aerial vehicle has a large error, and generally only the longitude and latitude information of each photo is reserved. The attitude angle of the unmanned aerial vehicle is determined by the relation between a vehicle coordinate system and a geographic coordinate system and is represented by three attitude angles, namely a course angle, a pitch angle and a roll angle, wherein the roll angle is an included angle between a transverse shaft of the carrier and a horizontal line.
Specifically, when an oblique photography technique is adopted to obtain oblique photography images, a target needs to be shot at multiple angles and multiple stations, and color information is easily obtained under the influence of illumination, shadow shielding of surrounding objects and the like, so that the intensity, saturation and the like of the color of the same target in different oblique photography images are inconsistent, the texture and color at the intersection of the oblique photography images are inconsistent, and the overall effect of a color model is affected. Meanwhile, the oblique photographic image may have a distorted image, which reduces the accuracy of the three-dimensional live-action model.
In this embodiment, the oblique captured image is subjected to pre-processing for light leveling and distortion correction. The light and color uniformizing preprocessing is to correct the uneven distribution of brightness, contrast, hue and saturation in one or more images to make the brightness, contrast, hue and saturation in each position of the images consistent. Before generating the texture, the oblique shooting images are subjected to uniform light and color processing, and the technical effect that the colors of different oblique shooting images are coordinated and consistent is achieved. The distortion correction preprocessing is to perform distortion correction on the oblique photographed image based on a distortion coefficient and correct an image having distortion into an image having no distortion. The oblique photographic image is subjected to light and color evening and distortion correction preprocessing, so that the accuracy of the oblique photographic image is improved.
S113: and performing space-three encryption on the preprocessed oblique photographic image and the ground control point image to determine the external orientation element of the oblique photographic image.
Specifically, a large number of feature points are extracted from the oblique photographic image and the ground control point image, then automatic homonymy point matching is carried out on the extracted feature points, and then integral adjustment calculation is carried out by adopting block adjustment to determine the external orientation element of the oblique photographic image. The external orientation element is a parameter for determining the spatial position and posture of the photographing light beam at the moment of photographing.
Preferably, the three-dimensional modeling software is Smart 3D software.
S114: and generating a high-density three-dimensional point cloud according to the exterior orientation element and the preprocessed oblique photographic image.
Specifically, the exterior orientation elements and the preprocessed oblique photographic images are matched to form three-dimensional image pairs, point cloud matching calculation is carried out on all the three-dimensional image pairs respectively to obtain three-dimensional image pair point clouds, and then the three-dimensional image pair point clouds are collected and merged to generate the high-density three-dimensional point cloud.
S115: and constructing an irregular triangulation network model according to the high-density three-dimensional point cloud.
Specifically, an irregular triangulation network is constructed according to the high-density three-dimensional point cloud, and a non-texture irregular triangulation network model is generated.
S116: and constructing a three-dimensional live-action model of the area to be detected according to the irregular triangulation network model and the oblique photographic image.
Specifically, the oblique photographic image comprises texture information of a region to be detected, and based on the texture information of the irregular triangulation network model and the texture information of the region to be detected in the oblique photographic image, texture is given to a triangular surface of the irregular triangulation network model by adopting a texture mapping algorithm, so that a three-dimensional live-action model with clear texture is generated.
In the embodiment, by adopting the oblique photography technology, the obtained oblique photography image can collect the texture of the side surface of the earth surface on the one hand, and can realize single image measurement on the other hand, so that the actual conditions of a geological disaster area and a hidden danger area are reflected more truly, the three-dimensional modeling cost is reduced, and the obtained oblique photography image has small data volume and is easy to issue on a network.
It can be understood that large landslides can be seen based on visual interpretation of high-resolution remote sensing images, but according to research findings of national geological disaster databases, most geological disasters mainly include small landslides and collapse, the remote sensing images have the problem of insufficient resolution, and the remote sensing images cannot be distinguished and need to be interpreted with the aid of aerial photogrammetry images. The landslide interpretation is carried out through a remote sensing image, as the image is planar, stereoscopic vision is obtained only through some differences of colors of earth surface attachments, the actual space state of a geological disaster area cannot be truly reflected, and the landslide cannot be observed in all directions, so that landslide misjudgment and omission are easily caused, and the accuracy of landslide visual interpretation is reduced.
S120: and acquiring laser point cloud data of the area to be detected.
A plurality of control points are arranged on the area to be measured, and the control points can be understood as object points of the three-dimensional laser scanner. As shown in fig. 3, acquiring the laser point cloud data of the region to be measured specifically includes the following steps:
s121: and acquiring laser point cloud data of a plurality of control points according to the panoramic image of the area to be detected scanned and shot by the three-dimensional laser scanner.
In this embodiment, laser point cloud data of a plurality of control points is obtained by using a panoramic image of a region to be measured scanned and photographed by a free standing laika RTC360 three-dimensional laser scanner. Because vegetation is luxuriant and dense, when the mountain is covered by vegetation, the three-dimensional model obtained through oblique photogrammetry is difficult to penetrate through the vegetation to obtain the earth surface model, and the laser beam emitted by the three-dimensional laser scanner system has certain penetrability, and multiple echoes return in the process that the laser beam penetrates through the vegetation to reach the earth surface. Therefore, the three-dimensional laser scanner can be used for acquiring the three-dimensional data of the tree crown surface and the ground surface, and the accuracy of the acquired micro-landform form is improved.
Preferably, the three-dimensional laser scanner is a standing three-dimensional laser scanner. For aviation three-dimensional laser scanner, ground formula three-dimensional laser scanner of standing on the shelf acquires ground information more easily to the data precision that ground formula three-dimensional laser scanner of standing on the shelf acquireed can reach within 5 millimeters, and point cloud density is higher with the precision.
S122: and splicing the laser point cloud data of the control points to obtain a splicing result of the laser point cloud data of the control points.
In this embodiment, laser point cloud data of a plurality of control points are spliced by using a VIS visual tracking technology and a plurality of sensors such as an Inertial Measurement Unit (IMU), so as to obtain a splicing result of the laser point cloud data of the plurality of control points.
Preferably, the splicing software is Cyclone Register 360 software.
S123: and checking the splicing precision of the splicing result.
In this embodiment, in order to make the acquired laser point cloud data conveniently applicable, the acquired laser point cloud data can be combined with various data from other sources such as: the remote sensing images are fused, and laser point cloud data need to be converted into an external absolute coordinate system from a unified coordinate system. And converting the laser point cloud data from the unified coordinate system to an external absolute coordinate system through splicing software, and generating a splicing precision check report. And checking the splicing precision of the splicing result according to the splicing precision check report.
S124: and if the splicing precision reaches the preset precision, taking the splicing result as point cloud data of the area to be detected.
In this embodiment, the predetermined accuracy may be set manually as needed.
S125: and if the splicing precision does not reach the preset precision, repeating S121-S123 until the splicing precision reaches the preset precision, and taking the splicing result as point cloud data of the area to be detected.
In this embodiment, if there is a region to be measured that cannot be scanned and photographed by the three-dimensional laser scanner, an image of the region to be measured may be obtained by combining the oblique photogrammetry method.
S130: and determining the landform form of the area to be detected according to the three-dimensional real scene model and the laser point cloud data.
In the implementation, the landform form of the area to be measured is determined by combining a high-precision oblique photogrammetry three-dimensional real-scene model and high-precision laser point cloud data obtained by station-mounted scanning. The resolution of the micro landform form acquired by the live-action three-dimensional model is 2 cm, and the data accuracy acquired by the standing three-dimensional laser scanner can be controlled within 5 mm, so that the high-accuracy live-action three-dimensional model and the laser point cloud data are combined to acquire the high-accuracy micro landform form, and the acquired micro landform is more real than the inclined photographic image data.
S140: and determining the disaster hidden danger area according to the landform form.
In this embodiment, the disaster-prone area is determined by dividing the boundaries of the disaster-prone area of the area to be measured according to the topographic form of the area to be measured. The disaster hidden danger areas are areas with disaster hidden dangers such as landslide, collapse, ground subsidence and the like, and comprise geological disaster areas and potential geological disaster areas. The geological disaster area is an area where geological disasters occur and can be determined through a three-dimensional live-action model; the potential geological disaster area is a potential geological disaster area and can be determined by a landform form obtained by combining a three-dimensional live-action model and laser point cloud data.
S150: and carrying out underground three-dimensional imaging analysis on the disaster hidden danger area by using a micro-seismic monitoring system to obtain the underground structure form of the disaster hidden danger area.
In this embodiment, the microseismic monitoring system includes a ground data server and a monitoring network, the monitoring network includes a plurality of microseismic monitoring units, and each microseismic monitoring unit includes a microseismic monitoring substation and a corresponding microseismic sensor. As shown in fig. 4, the method for obtaining the underground structure form of the disaster hidden danger area by using the micro-seismic monitoring system to perform underground three-dimensional imaging analysis on the disaster hidden danger area specifically comprises the following steps:
s151: the monitoring station network acquires monitoring data of the disaster hidden danger area in real time and transmits the monitoring data of the disaster hidden danger area to the ground data server, wherein the monitoring data of the disaster hidden danger area comprises station information configuration, monitoring area positioning, station relative position schematic diagram display and positioning, microseismic waveform data and microseismic event automatic positioning results.
S152: and the ground data server performs data processing on the monitoring data of the disaster hidden danger area to obtain geographic information data.
In this embodiment, the ground data server performs data processing on the monitoring data of the disaster potential area to obtain geographic information data. The data processing process comprises the following steps: and through P, S wave arrival time picking, performing gather judgment, a characteristic function curve, time-frequency analysis, Brune model parameter determination, filtering denoising, energy map analysis, polarity analysis, incipient motion inversion, seismic source parameter calculation, absolute positioning, main event relative positioning, double-difference positioning, fault plane interpretation corresponding to microseismic events and the like on the waveform. The trace gather is a set of seismic traces, the seismic traces refer to devices which are independent and have the same performance in order to record seismic reflection waves or refraction waves transmitted to seismic measuring points, and the seismic traces are composed of detectors, amplifiers, galvanometers and the like; the seismic source parameters are some characteristic quantities at the seismic source or some physical quantities of the physical process of the seismic source when the earthquake occurs; the seismic source parameters comprise the trend, the inclination and the dip angle of a seismic source fault plane, the direction and the amplitude of the dislocation of two discs of the seismic source fault plane, the length and the width of the seismic source fault plane, the expansion speed of fault fracture, the main stress state of the seismic source and the like.
S153: and carrying out three-dimensional visualization processing on the geographic information data to obtain a three-dimensional visualization microseismic model.
In the embodiment, the geographic information data is imported into three-dimensional visualization software for three-dimensional visualization processing to obtain a three-dimensional visualization microseismic model, so that three-dimensional visualization display of earthquake events, topographic maps and monitoring points is realized, and different display modes are adopted for the events according to different seismic levels, depths and seismic time.
S154: and performing profile analysis on the three-dimensional visual microseismic model to obtain the underground structure form of the disaster hidden danger area.
S160: and when the change amplitude of the underground structure form exceeds a preset amplitude, giving out an early warning.
It can be understood that, before the occurrence of potential geological disasters such as landslide and collapse, the rock mass can be damaged to a certain extent, so that stress is redistributed, the structure of the side slope rock mass is further damaged and destabilized, the corresponding geological structure of the underground three-dimensional imaging analysis monitoring area can be distorted or greatly deformed, and the progressive damage process from the deformation of the rock mass to the fracture of the unit rock mass to the instability of the whole rock mass can be visually monitored. The preset amplitude can be set manually as required, when the change amplitude of the underground structure form exceeds the preset amplitude, the geological structure of the area to be detected is distorted or greatly deformed, geological disasters can occur, and early warning is given out in the modes of short message group sending early warning and/or loud speaker early warning and the like. The short message group sending early warning is that the short message group sending function is used for issuing early warning information to group detection group defense personnel and related unit personnel. The horn early warning is that the horn is remotely started in time through a system to carry out siren or voice broadcast early warning.
In the embodiment, a three-dimensional live-action model of the region to be measured is constructed based on the oblique photographic image; the method comprises the steps of obtaining laser point cloud data of the area to be detected, determining the landform form of the area to be detected according to the three-dimensional live-action model and the laser point cloud data, determining a disaster hidden danger area according to the landform form, carrying out underground three-dimensional imaging analysis on the disaster hidden danger area by using a micro-seismic monitoring system to obtain the underground structure form of the disaster hidden danger area, and sending early warning when the change amplitude of the underground structure form exceeds a preset amplitude. Through the visual vision of the three-dimensional live-action model, the efficiency and the accuracy of accurate interpretation work are improved, the laser point cloud data are used as one of the bases for determining the landform form shape of the region to be detected, the interpretation accuracy is improved, and the technical effect of improving the accuracy of geological disaster monitoring is achieved. The method comprises the steps of carrying out underground three-dimensional imaging analysis on a disaster hidden danger area, monitoring the change of the underground structural form of the disaster hidden danger area in real time, sending out early warning when the change amplitude of the underground structural form exceeds a preset amplitude, realizing the technical effect of early warning on geological disasters, and reducing casualties caused by sudden geological disasters, wherein the early warning has accuracy and advance.
Example 2
Referring to fig. 5, fig. 5 is a block diagram illustrating a schematic structure of a geological disaster monitoring and early warning device according to an embodiment of the present disclosure. The geological disaster monitoring and early warning device 200 comprises a construction module 210, an acquisition module 220, a geomorphologic shape determination module 230, a preset region determination module 240, an analysis module 250 and an early warning module 260.
The construction module 210 is configured to construct a three-dimensional live-action model of the region to be measured based on the oblique photographic image;
an obtaining module 220, configured to obtain laser point cloud data of the region to be measured;
a landform form shape determining module 230, configured to determine a landform shape of the region to be detected according to the three-dimensional real scene model and the laser point cloud data;
a preset region determining module 240, configured to determine a disaster hidden danger region according to the landform form;
the analysis module 250 is configured to perform underground three-dimensional imaging analysis on the disaster hidden danger area by using a micro-seismic monitoring system to obtain an underground structure form of the disaster hidden danger area;
and the early warning module 260 is used for sending out early warning when the change amplitude of the underground structure form exceeds a preset amplitude.
The building module 210 includes:
the ground control point image acquisition sub-module is used for acquiring a ground control point image;
the preprocessing submodule is used for preprocessing the oblique photographic image to obtain a preprocessed oblique photographic image, and the preprocessing comprises light and color evening and distortion correction processing;
the space-three encryption submodule is used for carrying out space-three encryption on the preprocessed oblique photographic image and the ground control point image and determining an external orientation element of the oblique photographic image;
the point cloud generation submodule is used for generating a high-density three-dimensional point cloud according to the exterior orientation element and the preprocessed oblique photographic image;
the triangulation network model construction sub-module is used for constructing an irregular triangulation network model according to the high-density three-dimensional point cloud;
and the live-action model construction submodule is used for constructing a three-dimensional live-action model of the area to be detected according to the irregular triangulation network model and the oblique photographic image.
The embodiment of the invention also discloses computer equipment, which comprises a memory and a processor, wherein the memory stores a computer program, and the computer program realizes the geological disaster monitoring and early warning method in the first embodiment when being executed by the processor.
The embodiment of the invention also discloses a computer readable storage medium, wherein a computer program is stored on the computer readable storage medium, and when the computer program is executed by a processor, the geological disaster monitoring and early warning method is realized.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method can be implemented in other ways. The apparatus embodiments described above are merely illustrative and, for example, the flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of apparatus, methods and computer program products according to various embodiments of the present invention. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
In addition, each functional module or unit in each embodiment of the present invention may be integrated together to form an independent part, or each module may exist separately, or two or more modules may be integrated to form an independent part.
The functions, if implemented in the form of software functional modules and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention or a part of the technical solution that contributes to the prior art in essence can be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a smart phone, a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention.
Claims (10)
1. A geological disaster monitoring and early warning method is characterized by comprising the following steps,
constructing a three-dimensional live-action model of the region to be detected based on the oblique photographic image;
acquiring laser point cloud data of the area to be detected;
determining the landform form of the area to be detected according to the three-dimensional live-action model and the laser point cloud data;
determining a disaster hidden danger area according to the landform form;
carrying out underground three-dimensional imaging analysis on the disaster hidden danger area by using a micro-seismic monitoring system to obtain an underground structure form of the disaster hidden danger area;
and when the change amplitude of the underground structure form exceeds a preset amplitude, giving out an early warning.
2. The geological disaster monitoring and early warning method as claimed in claim 1, wherein the step of constructing a three-dimensional live-action model of the region to be measured based on the tilted photographic images comprises:
acquiring a ground control point image;
preprocessing the oblique photographic image to obtain a preprocessed oblique photographic image, wherein the preprocessing comprises light homogenizing and color homogenizing and distortion correction processing;
performing space-three encryption on the preprocessed oblique photographic image and the ground control point image to determine an external orientation element of the oblique photographic image;
generating a high-density three-dimensional point cloud according to the exterior orientation element and the preprocessed oblique photographic image;
constructing an irregular triangulation network model according to the high-density three-dimensional point cloud;
and constructing a three-dimensional live-action model of the area to be detected according to the irregular triangulation network model and the oblique photographic image.
3. The geological disaster monitoring and early warning method as claimed in claim 1, wherein the laser point cloud data is obtained by using a three-dimensional laser scanner, and the three-dimensional laser scanner is a standing three-dimensional laser scanner.
4. The geological disaster monitoring and early warning method as claimed in claim 1, wherein a plurality of control points are arranged on the area to be detected, and the step of obtaining the laser point cloud data of the area to be detected comprises:
s1: acquiring laser point cloud data of a plurality of control points according to the panoramic image of the area to be detected scanned and shot by the three-dimensional laser scanner;
s2: splicing the laser point cloud data of the control points to obtain a splicing result of the laser point cloud data of the control points;
s3: checking the splicing precision of the splicing result;
s4: if the splicing precision reaches the preset precision, taking the splicing result as the laser point cloud data of the area to be detected;
s5: and if the splicing precision does not reach the preset precision, repeating S1-S3 until the splicing precision reaches the preset precision, and taking the splicing result as the laser point cloud data of the area to be detected.
5. The geological disaster monitoring and early warning method as claimed in claim 1, wherein the micro-seismic monitoring system comprises a ground data server and a monitoring station network, the monitoring station network comprises a plurality of micro-seismic monitoring units, each micro-seismic monitoring unit comprises a micro-seismic monitoring substation and a corresponding micro-seismic sensor, and the step of performing underground three-dimensional imaging analysis on the disaster hidden danger area by using the micro-seismic monitoring system to obtain the underground structure form of the disaster hidden danger area comprises the following steps:
the monitoring station network acquires monitoring data of the disaster hidden danger area in real time and transmits the monitoring data of the disaster hidden danger area to the ground data server, wherein the monitoring data of the disaster hidden danger area comprises station information configuration, monitoring area positioning, station relative position schematic diagram display and positioning, microseismic waveform data and microseismic event automatic positioning results;
the ground data server performs data processing on the monitoring data of the disaster hidden danger area to obtain geographic information data;
carrying out three-dimensional visualization processing on the geographic information data to obtain a three-dimensional visualization microseismic model;
and performing profile analysis on the three-dimensional visual microseismic model to obtain the underground structure form of the disaster hidden danger area.
6. The geological disaster monitoring and early warning method as claimed in claim 1, wherein the early warning mode comprises short message group sending early warning and/or loud speaker early warning.
7. The utility model provides a geological disaster monitoring early warning device which characterized in that includes:
the building module is used for building a three-dimensional live-action model of the area to be measured based on the oblique photographic image;
the acquisition module is used for acquiring laser point cloud data of the area to be detected;
the landform form shape determining module is used for determining the landform shape of the area to be detected according to the three-dimensional real scene model and the laser point cloud data;
the preset region determining module is used for determining a disaster hidden danger region according to the landform form;
the analysis module is used for carrying out underground three-dimensional imaging analysis on the disaster hidden danger area by using a micro-seismic monitoring system to obtain an underground structure form of the disaster hidden danger area;
and the early warning module is used for sending out early warning when the change amplitude of the underground structure form exceeds a preset amplitude.
8. The geological disaster monitoring and early warning device as claimed in claim 7, wherein said building module comprises:
the ground control point image acquisition sub-module is used for acquiring a ground control point image;
the preprocessing submodule is used for preprocessing the oblique photographic image to obtain a preprocessed oblique photographic image, and the preprocessing comprises light and color evening and distortion correction processing;
the space-three encryption submodule is used for carrying out space-three encryption on the preprocessed oblique photographic image and the ground control point image and determining an external orientation element of the oblique photographic image;
the point cloud generation submodule is used for generating a high-density three-dimensional point cloud according to the exterior orientation element and the preprocessed oblique photographic image;
the triangulation network model construction sub-module is used for constructing an irregular triangulation network model according to the high-density three-dimensional point cloud;
and the live-action model construction submodule is used for constructing a three-dimensional live-action model of the area to be detected according to the irregular triangulation network model and the oblique photographic image.
9. A computer device, characterized in that the computer device comprises a memory and a processor, the memory stores a computer program, the computer program when executed by the processor implements the geological disaster monitoring and warning method as claimed in any one of claims 1 to 6.
10. A computer-readable storage medium, having stored thereon a computer program which, when executed by a processor, implements a geological disaster monitoring and warning method as claimed in any one of claims 1 to 6.
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