CN116843850B - Emergency terrain data acquisition method, system and computer readable storage medium - Google Patents
Emergency terrain data acquisition method, system and computer readable storage medium Download PDFInfo
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Abstract
The invention discloses a method, a system and a computer readable storage medium for acquiring emergency topographic data, wherein the method comprises the following steps: when disaster report information is received, determining a disaster address in the disaster report information; controlling an unmanned aerial vehicle to acquire aerial images of disaster sites based on the disaster addresses, and constructing a three-dimensional live-action model of the disaster sites based on the aerial images; determining a target selected object in the three-dimensional live-action model and a live-action element corresponding to the target selected object; the method comprises the steps of determining the type of the topographic data corresponding to the target selected object according to the live-action elements, and determining the topographic data corresponding to the type of the topographic data based on the three-dimensional live-action model.
Description
Technical Field
The invention relates to the technical field of disaster emergency, in particular to an emergency topographic data acquisition method, an emergency topographic data acquisition system and a computer readable storage medium.
Background
Along with the continuous development of social economy and cultural life, the emergency rescue system has quick response and risk resistance to disaster events, provides more convenient emergency rescue services for the public, and is an important subject for related departments to provide public services and public safety. In the related art, when a disaster event occurs, on-site exploration needs to be performed manually to obtain topographic data so as to be used as a basis for emergency decision. But the speed of manual exploration is too slow, the emergency terrain data acquisition efficiency is too low, and unfavorable emergency measures fall to the ground rapidly.
The foregoing is provided merely for the purpose of facilitating understanding of the technical solutions of the present invention and is not intended to represent an admission that the foregoing is prior art.
Disclosure of Invention
The invention mainly aims to provide an emergency topographic data acquisition method, an emergency topographic data acquisition system and a computer readable storage medium, aiming to achieve the effect of improving the emergency topographic data acquisition efficiency.
In order to achieve the above object, the present invention provides an emergency topographic data acquisition method, comprising:
when disaster report information is received, determining a disaster address in the disaster report information;
Controlling an unmanned aerial vehicle to acquire aerial images of disaster sites based on the disaster addresses, and constructing a three-dimensional live-action model of the disaster sites based on the aerial images;
Determining a target selected object in the three-dimensional live-action model and a live-action element corresponding to the target selected object;
And determining the type of the topographic data corresponding to the target selected object according to the live-action elements, and determining the topographic data corresponding to the type of the topographic data based on the three-dimensional live-action model.
Optionally, the step of controlling the unmanned aerial vehicle to collect aerial images of the disaster site based on the disaster address, and constructing the three-dimensional live-action model of the disaster site based on the aerial images includes:
determining a nodding point and a plurality of side shooting points based on the disaster address;
controlling the unmanned aerial vehicle to navigate to the depression point and the side photographing points respectively, and collecting the aerial image in the navigation process;
Dividing the aerial image into encryption partitions, and determining connection points in the encryption partitions;
Splicing connection points in each aerial image to determine a blank three-dimensional model;
And determining texture features of each encryption partition based on the aerial image, and mapping the texture features into the blank three-dimensional model to obtain the three-dimensional live-action model.
Optionally, the step of determining the target selected object in the three-dimensional live-action model and the live-action element corresponding to the target selected object includes:
acquiring a selection instruction triggered by a user, and determining the target selected object according to the selection instruction;
And determining texture features and model structural features corresponding to the target selected object based on the three-dimensional live-action model, and determining the live-action elements according to the texture features and the model structural features corresponding to the target selected object.
Optionally, the step of determining the terrain data type corresponding to the target selected object according to the live-action element, and determining the terrain data corresponding to the terrain data type based on the three-dimensional live-action model includes:
determining the element number of the live-action elements in the target selected object;
Determining the terrain data type according to the live-action elements and the element number;
After the step of determining the terrain data type corresponding to the target selected object according to the live-action element and determining the terrain data corresponding to the terrain data type based on the three-dimensional live-action model, the method further comprises the steps of:
And adding a detail display interface of the target selection object, and displaying the terrain data type and the corresponding terrain data in the detail display interface.
Optionally, the step of determining the target selected object in the three-dimensional live-action model and the live-action element corresponding to the target selected object includes:
dividing the three-dimensional live-action model into a plurality of model areas based on texture features of the three-dimensional live-action model;
determining real scene elements corresponding to the model area based on the texture features and the model structure features of the model area;
and when the live-action element is a disaster live-action element, determining the model area as the target selected object.
Optionally, after the step of determining the terrain data corresponding to the terrain data type based on the three-dimensional live-action model, the method further includes:
when the live-action element is a disaster live-action element, determining an emergency project corresponding to the live-action element and an implementation position corresponding to the emergency project;
determining engineering structure parameters corresponding to the emergency engineering according to the terrain data, the implementation position and the three-dimensional live-action model;
and outputting an emergency scheme corresponding to the emergency project according to the implementation position and the project structure parameter.
Optionally, the step of determining the emergency project corresponding to the live-action element and the implementation position corresponding to the emergency project includes:
determining geographic features of an environment where the live-action element is located based on the three-dimensional live-action model, determining a formation reason of the live-action element according to the geographic features, determining a danger coefficient corresponding to the live-action element according to the topographic data and the formation reason, and determining an emergency project corresponding to the live-action element based on the danger coefficient and the formation reason;
The implementation location is determined based on the geographic feature and the emergency project.
Optionally, the step of determining the risk coefficient corresponding to the live-action element according to the topographic data includes:
Predicting the diffusion range of the live-action element and the disaster intensity corresponding to the diffusion range according to the topographic data and the formation reason;
determining important protection main bodies in the diffusion range and disaster bearing capacity coefficients of the important protection main bodies;
Determining the risk coefficient according to the disaster intensity corresponding to the diffusion range and the disaster bearing capacity coefficient;
and when the risk coefficient is larger than a preset coefficient, matching the corresponding emergency engineering according to the formation reason.
In addition, in order to achieve the above object, the present invention also provides an emergency terrain data acquisition system including a memory, a processor, and an emergency terrain data acquisition program stored on the memory and executable on the processor, the emergency terrain data acquisition program implementing the steps of the emergency terrain data acquisition method as described above when executed by the processor.
In addition, in order to achieve the above object, the present invention also provides a computer-readable storage medium having stored thereon an emergency terrain data acquisition program which, when executed by a processor, implements the steps of the emergency terrain data acquisition method as described above.
The embodiment of the invention provides an emergency topographic data acquisition method, an emergency topographic data acquisition system and a computer readable storage medium, wherein when disaster report information is received, a disaster address in the disaster report information is determined; controlling the unmanned aerial vehicle to acquire aerial images of disaster sites based on the disaster addresses; constructing a three-dimensional live-action model of the disaster site based on the aerial image; determining a target selected object in the three-dimensional live-action model and a live-action element corresponding to the target selected object; and determining the type of the topographic data corresponding to the target selected object according to the live-action elements, and determining the topographic data corresponding to the type of the topographic data based on the three-dimensional live-action model. Therefore, after a disaster event occurs, the unmanned aerial vehicle can quickly and safely reach a disaster site to acquire aerial images, so that a three-dimensional live-action model constructed by the aerial images can automatically distinguish the target selected objects, and the type of the topographic data to be measured of the target selected objects and the topographic data corresponding to the topographic data are determined, thereby improving the acquisition efficiency of the topographic data and quickly providing a basis for emergency decision.
Drawings
FIG. 1 is a schematic diagram of a terminal structure of a hardware operating environment according to an embodiment of the present invention;
FIG. 2 is a flow chart of an embodiment of the emergency terrain data acquisition method of the present invention;
FIG. 3 is a flow chart of another embodiment of the emergency terrain data acquisition method of the present invention;
fig. 4 is a schematic diagram of an application scenario according to an embodiment of the present invention.
The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
In the related art, after a disaster event occurs, the site exploration needs to be manually performed to obtain the topographic data so as to be used as the basis of emergency decision. But the speed of manual exploration is too slow, the emergency terrain data acquisition efficiency is too low, and unfavorable emergency measures fall to the ground rapidly.
In order to improve the acquisition efficiency of the topographic data, the embodiment of the invention provides an emergency topographic data acquisition method, an emergency topographic data acquisition system and a computer readable storage medium, wherein the method mainly comprises the following steps:
when disaster report information is received, determining a disaster address in the disaster report information;
controlling the unmanned aerial vehicle to acquire aerial images of disaster sites based on the disaster addresses;
constructing a three-dimensional live-action model of the disaster site based on the aerial image;
Determining a target selected object in the three-dimensional live-action model and a live-action element corresponding to the target selected object;
And determining the type of the topographic data corresponding to the target selected object according to the live-action elements, and determining the topographic data corresponding to the type of the topographic data based on the three-dimensional live-action model.
Therefore, after a disaster event occurs, the unmanned aerial vehicle can quickly and safely reach a disaster site to acquire aerial images, so that a three-dimensional live-action model constructed by the aerial images can automatically distinguish the target selected objects, and the type of the topographic data to be measured of the target selected objects and the topographic data corresponding to the topographic data are determined, thereby improving the acquisition efficiency of the topographic data and quickly providing a basis for emergency decision.
The invention as claimed is described in detail below with reference to the attached drawing figures.
As shown in fig. 1, fig. 1 is a schematic diagram of a terminal structure of a hardware running environment according to an embodiment of the present invention.
The terminal of the embodiment of the invention can be an emergency terrain data acquisition system.
As shown in fig. 1, the terminal may include: a processor 1001, such as a CPU, a memory 1003, and a communication bus 1002. Wherein the communication bus 1002 is used to enable connected communication between these components. The memory 1003 may be a high-speed RAM memory or a stable memory (non-volatile memory), such as a disk memory. The memory 1003 may alternatively be a storage device separate from the processor 1001 described above.
It will be appreciated by those skilled in the art that the terminal structure shown in fig. 1 is not limiting of the terminal and may include more or fewer components than shown, or may combine certain components, or a different arrangement of components.
As shown in fig. 1, an operating system and an emergency terrain data acquisition program may be included in a memory 1003 as one type of computer storage medium.
In the terminal shown in fig. 1, the processor 1001 may be configured to call an emergency terrain data acquisition program stored in the memory 1003, and perform the following operations:
when disaster report information is received, determining a disaster address in the disaster report information;
Controlling an unmanned aerial vehicle to acquire aerial images of disaster sites based on the disaster addresses, and constructing a three-dimensional live-action model of the disaster sites based on the aerial images;
Determining a target selected object in the three-dimensional live-action model and a live-action element corresponding to the target selected object;
And determining the type of the topographic data corresponding to the target selected object according to the live-action elements, and determining the topographic data corresponding to the type of the topographic data based on the three-dimensional live-action model.
Further, the processor 1001 may call the emergency terrain data acquisition program stored in the memory 1003, and further perform the following operations:
determining a nodding point and a plurality of side shooting points based on the disaster address;
Controlling the unmanned aerial vehicle to navigate to the depression point and the side photographing points respectively, and collecting the aerial image in the navigation process;
Dividing the aerial image into encryption partitions, and determining connection points in the encryption partitions;
Splicing connection points in each aerial image to determine a blank three-dimensional model;
And determining texture features of each encryption partition based on the aerial image, and mapping the texture features into the blank three-dimensional model to obtain the three-dimensional live-action model.
Further, the processor 1001 may call the emergency terrain data acquisition program stored in the memory 1003, and further perform the following operations:
acquiring a selection instruction triggered by a user, and determining the target selected object according to the selection instruction;
And determining texture features and model structural features corresponding to the target selected object based on the three-dimensional live-action model, and determining the live-action elements according to the texture features and the model structural features corresponding to the target selected object.
Further, the processor 1001 may call the emergency terrain data acquisition program stored in the memory 1003, and further perform the following operations:
determining the element number of the live-action elements in the target selected object;
Determining the terrain data type according to the live-action elements and the element number;
After the step of determining the terrain data type corresponding to the target selected object according to the live-action element and determining the terrain data corresponding to the terrain data type based on the three-dimensional live-action model, the method further comprises the steps of:
And adding a detail display interface of the target selection object, and displaying the terrain data type and the corresponding terrain data in the detail display interface.
Further, the processor 1001 may call the emergency terrain data acquisition program stored in the memory 1003, and further perform the following operations:
dividing the three-dimensional live-action model into a plurality of model areas based on texture features of the three-dimensional live-action model;
determining real scene elements corresponding to the model area based on the texture features and the model structure features of the model area;
and when the live-action element is a disaster live-action element, determining the model area as the target selected object.
Further, the processor 1001 may call the emergency terrain data acquisition program stored in the memory 1003, and further perform the following operations:
when the live-action element is a disaster live-action element, determining an emergency project corresponding to the live-action element and an implementation position corresponding to the emergency project;
determining engineering structure parameters corresponding to the emergency engineering according to the terrain data, the implementation position and the three-dimensional live-action model;
and outputting an emergency scheme corresponding to the emergency project according to the implementation position and the project structure parameter.
Further, the processor 1001 may call the emergency terrain data acquisition program stored in the memory 1003, and further perform the following operations:
determining geographic features of an environment where the live-action element is located based on the three-dimensional live-action model, determining a formation reason of the live-action element according to the geographic features, determining a danger coefficient corresponding to the live-action element according to the topographic data and the formation reason, and determining an emergency project corresponding to the live-action element based on the danger coefficient and the formation reason;
The implementation location is determined based on the geographic feature and the emergency project.
Further, the processor 1001 may call the emergency terrain data acquisition program stored in the memory 1003, and further perform the following operations:
Predicting the diffusion range of the live-action element and the disaster intensity corresponding to the diffusion range according to the topographic data and the formation reason;
determining important protection main bodies in the diffusion range and disaster bearing capacity coefficients of the important protection main bodies;
Determining the risk coefficient according to the disaster intensity corresponding to the diffusion range and the disaster bearing capacity coefficient;
and when the risk coefficient is larger than a preset coefficient, matching the corresponding emergency engineering according to the formation reason.
The following is a description of what is claimed in the claims of the present invention by means of specific exemplary embodiments, so that those skilled in the art can better understand the scope of the claims of the present invention. It should be understood that the following exemplary embodiments do not limit the scope of the present invention, but are only used to illustrate the present invention.
Illustratively, referring to FIG. 2, in one embodiment of the emergency terrain data acquisition method of the present invention, the emergency terrain data acquisition method comprises the steps of:
And step S10, when disaster report information is received, determining a disaster address in the disaster report information.
In this embodiment, after the occurrence of the disaster event, different professionals may report disaster report information to the system through different devices and the like, and the time, place, and the like of the occurrence of the event will generally be written at the time of reporting. The system can receive disaster report information reported by various devices in various modes. And analyzing disaster addresses of disaster events in the disaster report information from the report information by means of character recognition, voice recognition and the like.
And step S20, controlling the unmanned aerial vehicle to acquire aerial images of disaster sites based on the disaster addresses, and constructing a three-dimensional live-action model of the disaster sites based on the aerial images.
In this embodiment, the location and the occupied area of the disaster site can be determined based on the disaster address, and after the disaster address is determined, the unmanned aerial vehicle is controlled to collect aerial images of the disaster site at the disaster address. With further expansion of unmanned aerial vehicle technology and aerial photography technology, after a disaster occurs, aerial images of a disaster site can be rapidly and safely obtained through aerial survey of the unmanned aerial vehicle, and real-time conditions of the disaster site can be known based on the aerial images. The aerial image has space perception capability, and a three-dimensional live-action model of a disaster site can be quickly constructed according to the aerial image. Therefore, disaster site reconstruction breaks through the limitation of a two-dimensional plane. Specifically, according to aerial images, including low-altitude images, and flight control data of the unmanned aerial vehicle when the aerial images are shot, a three-dimensional live-action model of a disaster scene can be constructed, so that three-dimensional reconstruction of the disaster scene images is realized.
The three-dimensional real model has the characteristics of full elements and visualization, and contains the measurement information of the target ground object to be measured and various natural social information related to the measurement information. The three-dimensional real model can be displayed based on the three-dimensional GIS system, the three-dimensional GIS system can provide a richer and more lifelike display platform for disaster sites, people can visualize and visualise abstract and understandable space information, a safe and efficient mode is provided for exploring disaster sites, and accordingly accurate and rapid judgment is made.
Optionally, step S20 includes: determining a nodding point and a plurality of side shooting points based on the disaster address; controlling the unmanned aerial vehicle to navigate to the depression point and the side photographing points respectively, and collecting the aerial image in the navigation process; dividing the aerial image into encryption partitions, and determining connection points in the encryption partitions; splicing connection points in each aerial image to determine a blank three-dimensional model; and determining texture features of each encryption partition based on the aerial image, and mapping the texture features into the blank three-dimensional model to obtain the three-dimensional live-action model.
The aerial image of the disaster site is acquired through the unmanned aerial vehicle, the disaster address in the disaster reporting information can be determined according to the character recognition result of the disaster reporting information after the disaster reporting information is received, the position and the occupied area of the disaster site are determined based on the disaster address, and the nodding point and the plurality of side shooting points of the unmanned aerial vehicle are preset based on the position and the occupied area, so that the space three-dimensional information is constructed. And controlling the unmanned aerial vehicle to navigate to the depression point and the plurality of side photographing points respectively. When the three-dimensional real-scene model with spatial characteristics reaches one shooting point and in the flight process between the shooting points, aerial images are acquired, and the aerial images with multiple angles can be realized.
After aerial images of multiple angles are obtained, the aerial images are arranged, necessary coordinate conversion and arrangement are carried out on shooting point coordinates, the aerial images are divided into encryption areas according to the shape of a shot area, the corresponding aerial areas of shooting points and the performance of software and hardware of an unmanned aerial vehicle, and an air-to-three encryption project is established. And (3) carrying out automatic route matching in the encryption partition to construct a free network, and realizing model connection in the routes and model connection among the routes through automatic matching model connection points. After the free network is constructed, checking the connection points determined by the matching model, removing the rough difference points, and manually eliminating the connection points which are out of limit when the area network is in adjustment. The connection points should be manually added for special areas such as the shot boundaries where there are fewer connection points. And (3) carrying out beam method area network integral adjustment on the whole encryption area, checking directional connection point residual errors, carrying out manual repair and measurement on the out-of-limit directional connection points, carrying out adjustment calculation again, repeatedly operating until the out-of-limit directional connection points pass through, uniformly selecting a part of connection points from the obtained result as check points (generally, about 10% but not less than 3 connection points should be selected in one area to serve as check points), evaluating the precision of the air-to-three encryption engineering, and finally outputting encryption results and air-to-three reports when the to-be-directed connection points and the check point residual errors are all within specified limit differences. Smart3DContextCaptureCenter can be used for constructing the three-dimensional live-action model. After aerial triangulation is completed, software automatically performs multi-view image dense matching to generate three-dimensional dense point cloud, a blank three-dimensional model is built, texture matching is automatically completed by combining aerial images, and finally three-dimensional live-action model output is achieved.
Step S30, determining a target selected object in the three-dimensional live-action model and a live-action element corresponding to the target selected object;
In this embodiment, the target selected object may be an object selected by a user or a system in a three-dimensional real model, and the situation of the target ground object in the actual disaster scene corresponding to the target selected object may be quickly known through the display of the target selected object on the three-dimensional real model.
The target selected object may be a coordinate point, a line segment or an area selected, so that the target selected object occupies a certain area in the three-dimensional real scene model, and one or more real scene elements corresponding to the three-dimensional real scene model may be in the area, where the real scene elements are constituent features constituting the three-dimensional real scene model, for example, roads, slopes, rivers, forests, landslides, fire fields, and the like may all be used as real scene elements. For better understanding, referring to fig. 4, the real scene element of the target selection object in fig. 4 is a landslide.
Optionally, step S30 includes: acquiring a selection instruction triggered by a user, and determining the target selected object according to the selection instruction; and determining texture features and model structural features corresponding to the target selected object based on the three-dimensional live-action model, and determining the live-action elements according to the texture features and the model structural features corresponding to the target selected object.
The user can select an object which wants to acquire the topographic data, namely a target selected object, from the display area where the three-dimensional live-action image is located through the user interface, so that a selected instruction can be triggered, and the system determines the target selected object after acquiring the selected instruction triggered by the user.
Since the target selection object is selected by the user at will, there are various live-action elements corresponding to the selected area of the target selection object. But the three-dimensional real scene model can be used for determining the texture characteristics corresponding to the target selected object and the model structure characteristics of the region corresponding to the aggregated texture characteristics, and one or more real scene elements are determined according to the texture characteristics and the model structure characteristics.
Further, the step of determining the terrain data type corresponding to the target selected object according to the live-action element, and determining the terrain data corresponding to the terrain data type based on the three-dimensional live-action model includes: determining the element number and element type of the live-action elements in the target selected object; determining the terrain data type according to the element number and the element type; after the step of determining the terrain data type corresponding to the target selected object according to the live-action element and determining the terrain data corresponding to the terrain data type based on the three-dimensional live-action model, the method further comprises the steps of: and adding a detail display interface of the target selection object, and displaying the terrain data type and the corresponding terrain data in the detail display interface. Therefore, the customization of the target selected object can be improved, the visualization and informatization of the three-dimensional live-action model can be realized, and the efficiency of building emergency engineering is not influenced.
In an embodiment, since the target selection object is selected by the user autonomously, the degree of freedom of the user selection is high, the user may select one or more real scene elements, and when the number of elements is too large, it is difficult to generate terrain data for the real scene elements in the target selection object one by one, but the terrain data type of the target selection object is determined directly according to the type of the target selection object, for example, if the type of the target selection object is a line segment and the real scene element corresponding to the line is greater than a preset number, the terrain data type is determined according to the type as a straight line distance, and if the type of the target selection object is a line segment and the real scene element corresponding to the straight line is greater than a preset number, the terrain data type is determined according to the type as a land area. When the number of elements is small, the topographic data can be generated one by one aiming at the real-scene elements in the target selected object, for example, if the real-scene elements in the target selected object are smaller than the preset number, the topographic data type corresponding to the real-scene elements is determined, and the specific topographic data of the topographic data type corresponding to the real-scene elements is determined based on the topographic data type of the real-scene elements and the three-dimensional real-scene model. After the topographic data selected by the user is determined, adding a detail display interface of the target selected object on the display page, and displaying the topographic data type and the corresponding topographic data in the detail display interface so as to feed back the topographic data to the user, so that the user can make an emergency decision.
Optionally, step S30 includes: dividing the three-dimensional live-action model into a plurality of model areas based on texture features of the three-dimensional live-action model; determining real scene elements corresponding to the model area based on the texture features and the model structure features of the model area; and when the live-action element is a disaster live-action element, determining the model area as the target selected object.
When the three-dimensional live-action model is constructed, texture mapping is adopted to map textures in the live-action to the three-dimensional live-action model, so that the three-dimensional live-action model is more visual, and the regions belonging to the same live-action element are mapped with the same texture features. Therefore, the three-dimensional live-action model is divided into a plurality of model areas based on the texture features of the three-dimensional live-action model, the area corresponding to the same live-action element is actually divided into one model area, a plurality of live-action elements exist in the three-dimensional live-action model, a plurality of area models are also divided, live-action elements corresponding to the model areas, such as hillsides, forests and the like, are determined based on the texture features and the model structural features of the area models, the live-action elements corresponding to the model areas are determined one by one, whether the live-action elements are disaster live-action elements or not is determined, and the live-action elements comprise disaster live-action elements and common live-action elements. Disaster realistic elements are realistic elements caused by disaster events, such as landslide, breakwater, forest fire, etc. The common live-action elements are generated in nature for a long time and do not form safety threat, such as forests, river water without a flood bank, hillsides without landslide and the like. And when the live-action element is a disaster live-action element, determining the model area as the target selection object. Therefore, through the identification of the three-dimensional live-action model, the disaster area needing to output the topographic data is automatically determined, and important topographic data can be quickly obtained during emergency decision, so that the topographic data obtaining efficiency is improved.
Optionally, step S30 includes: acquiring a historical three-dimensional real model acquired in a historical inspection process; dividing the historical three-dimensional live-action model into a plurality of first model areas based on texture features of the historical three-dimensional live-action model; dividing the three-dimensional live-action model into a plurality of second model areas based on the texture features of the three-dimensional live-action model; comparing the first model region with the second model region, and determining a target model region which is not matched with the first model region in the second model region; taking the target model area as the target selection object; and determining texture features and model structure features corresponding to the target selected object based on the three-dimensional live-action model to determine the live-action elements.
The unmanned aerial vehicle can be adopted in advance to carry out advance inspection, and a three-dimensional live-action model for collecting an inspection area can be determined in the inspection process, so that a disaster site belongs to the advance inspection area. Therefore, a historical three-dimensional real-scene model collected in a historical inspection process corresponding to a disaster scene can be obtained, the historical three-dimensional real-scene model is divided into a plurality of first model areas based on the texture features of the historical three-dimensional real-scene model, and the three-dimensional real-scene model is divided into a plurality of second model areas based on the texture features of the three-dimensional real-scene model. Because the texture features of a corresponding real object, such as a forest or a river, are different when the same texture features are gathered, the first model area and the second model area are compared, a target model area which is not matched with the first model area in the second model area is determined, the target model area is taken as a target selected object, the texture features and the model structure features corresponding to the target selected object are determined based on the currently acquired three-dimensional real model, real elements are determined, and further diffusion or recurrence may occur in a change area caused by a large probability disaster of the selected target selected object.
Step S40, determining a terrain data type corresponding to the target selected object according to the real scene element, and determining terrain data corresponding to the terrain data type based on the three-dimensional real scene model;
In the embodiment, the three-dimensional real-scene model can be used for realizing the measurement of terrain data such as coordinates, distances, curved surfaces, volumes and the like on the model. But the type of terrain data that needs to be measured for different live-action elements is not the same. For example, a road may measure length and a lake may measure area. Presetting corresponding relations between different live-action elements and the types of the topographic data to be measured, and determining the types of the topographic data of the target selected object according to the live-action elements of the target selected object, wherein the types of the topographic data are the types of the topographic data to be measured. Such as grade, coordinates, length, volume, etc. After determining the type of the topographic data to be measured of the target selected object, determining the topographic data corresponding to each topographic data type based on the structural parameters in the three-dimensional live-action model.
In the technical scheme disclosed in the embodiment, when disaster report information is received, determining a disaster address in the disaster report information; controlling the unmanned aerial vehicle to acquire aerial images of disaster sites based on the disaster addresses; constructing a three-dimensional live-action model of the disaster site based on the aerial image; determining a target selected object in the three-dimensional live-action model and a live-action element corresponding to the target selected object; and determining the type of the topographic data corresponding to the target selected object according to the live-action elements, and determining the topographic data corresponding to the type of the topographic data based on the three-dimensional live-action model. Therefore, after a disaster event occurs, the unmanned aerial vehicle can quickly and safely reach a disaster site to acquire aerial images, so that a three-dimensional live-action model constructed by the aerial images can automatically distinguish the target selected objects, and the type of the topographic data to be measured of the target selected objects and the topographic data corresponding to the topographic data are determined, thereby improving the acquisition efficiency of the topographic data, and providing a basis for emergency decision safely and quickly.
Optionally, referring to fig. 3, based on any one of the foregoing embodiments, in another embodiment of the emergency terrain data acquiring method of the present invention, the emergency terrain data acquiring method S20 further includes:
step S50, when the live-action element is a disaster live-action element, determining an emergency project corresponding to the live-action element and an implementation position corresponding to the emergency project;
step S60, determining engineering structure parameters corresponding to the emergency engineering according to the topographic data, the implementation position and the three-dimensional real model;
and step S70, outputting an emergency scheme corresponding to the emergency project according to the implementation position and the project structure parameter.
In this embodiment, for spreading disasters, temporary protection emergency projects can be constructed to prevent disasters from spreading continuously to cause more disaster consequences, for example, for landslide disasters, retaining walls can be built to prevent landslides continuously, and for mountain fire disasters, fire walls, fire protection channels and the like can be built to prevent fire spreading. In the related art, a decision result for constructing an emergency project is generally made manually according to the on-site investigation condition, but the manual subjectivity is large, the time is long, and the efficiency for constructing the emergency project is low. If the real-scene element corresponding to the target selected object belongs to the disaster real-scene element, determining an emergency project corresponding to the real-scene element and an implementation position corresponding to the emergency project, for example, building a retaining wall under a landslide corresponding to the landslide, and setting a fireproof channel in the downwind direction or the combustible direction in the mountain fire real-scene element.
Optionally, S50 includes: determining geographic features of an environment where the live-action element is located based on the three-dimensional live-action model, determining a formation reason of the live-action element according to the geographic features, determining a danger coefficient corresponding to the live-action element according to the topographic data and the formation reason, and determining an emergency project corresponding to the live-action element based on the danger coefficient and the formation reason; the implementation location is determined based on the geographic feature and the emergency project.
In order to determine emergency engineering and implementation positions, firstly, geographic features of environments where live-action elements are located are determined based on a three-dimensional live-action model, current meteorological information can be obtained, and formation reasons, such as landslide caused by earth and stone collapse from the middle of a hillside and fire scene spread caused by southeast wind, are determined according to the geographic features and the meteorological information. And determining a danger coefficient corresponding to the real scene element according to the terrain data and the formation reason, determining an emergency project corresponding to the real scene element based on the danger coefficient and the formation reason, determining the geographic characteristics of the environment where the real scene element is located based on the three-dimensional real scene model, and determining the implementation position according to the geographic characteristics and the emergency project.
Further, predicting the diffusion range of the live-action element and the disaster intensity corresponding to the diffusion range according to the topographic data and the formation reason; determining important protection main bodies in the diffusion range and disaster bearing capacity coefficients of the important protection main bodies; determining the risk coefficient according to the disaster intensity corresponding to the diffusion range and the disaster bearing capacity coefficient; and when the risk coefficient is larger than a preset coefficient, matching the corresponding emergency engineering according to the formation reason.
Predicting the diffusion ranges of a plurality of live-action elements at different distances from a disaster site according to the topographic data and the formation reasons, determining important protection subjects in the diffusion ranges, such as schools, chemical plants and the like, evaluating the disaster-bearing capacity coefficients of the important protection subjects, and evaluating the disaster-bearing capacity coefficients of the important protection subjects at multiple angles, wherein the disaster-bearing capacity coefficients are determined according to personnel conditions and building strength of the important protection subjects and whether dangerous goods and dangerous goods information are stored or not. And determining a live-action risk coefficient corresponding to the disaster element according to the disaster intensity corresponding to the diffusion range and the disaster bearing capacity coefficient, matching corresponding emergency projects according to the formation reasons when the risk coefficient is larger than a preset coefficient, and selecting the most matched emergency projects according to the risk coefficient and the emergency grade of each emergency project when the emergency projects are matched, so that the disaster site is protected in a targeted manner.
After determining the corresponding emergency project, it is necessary to determine the project structure parameters of the specific emergency project according to the topographic data of the real elements, where the project structure parameters are the structure parameters of the emergency project, for example, the corresponding fireproof channel, the project structure parameters include channel width and channel length, and for retaining walls, the retaining wall height and wall thickness may also be included.
After determining the implementation position and the engineering structure parameters of the emergency engineering, outputting an emergency scheme corresponding to the emergency engineering according to the real-time implementation position and the engineering structure parameters. The emergency scheme can be used for building emergency engineering or providing auxiliary decision basis, so that the efficiency of building the emergency engineering is improved.
Optionally, step S60 includes: generating a three-dimensional building model of the emergency engineering according to the implementation position and the engineering parameters, and determining a working flow and material requirements and emergency personnel requirements corresponding to the working flow according to the three-dimensional building model; invoking material storage information and emergency personnel residence information of the region where the implementation position is located; generating a material calling scheme according to the material requirement and the material storage information, and generating an emergency personnel calling scheme according to the emergency team residence information and the emergency personnel requirement; and generating the emergency plan according to the material calling plan, the emergency personnel calling plan, the three-dimensional building model and the operation flow.
According to the three-dimensional building model, the size parameters and the operation process of each structure of the emergency engineering can be intuitively determined, parameters are carried out on the three-dimensional building model of the emergency engineering according to different operation processes, an operation flow is determined according to a splitting process, material requirements and emergency personnel requirements corresponding to the operation flow are determined according to a splitting result, a material calling scheme is generated according to the material requirements and material storage information, an emergency personnel calling scheme is generated according to emergency team residence information and the emergency personnel requirements, and finally an emergency scheme is generated according to the material calling scheme, the emergency personnel calling scheme, the three-dimensional building model and the operation flow.
Further, the material calling scheme and the emergency personnel calling scheme are divided into a staged material calling scheme and/or an emergency personnel calling scheme according to the operation flow, and when the current stage is reached, a calling request is sent to a material information platform or an emergency personnel information platform according to the material calling scheme and/or the emergency personnel calling scheme corresponding to the current stage so as to acquire the resources of the stage.
For better understanding, referring to fig. 4, fig. 4 is a partial screenshot of a three-dimensional real-scene model, when an emergency terrain data acquisition instruction is received, it is determined that the texture features of a grid region in fig. 4 are different from those of other regions, an independent model region is determined, according to the fact that the texture features of the model region in the three-dimensional real-scene model are matched with preset landslide real-scene features, and the geographic features are on a half hillside, it is determined that a real-scene element corresponding to the model region is a landslide real-scene element, and the model region is determined to be a target selected object. Further, determining that the needed terrain data types corresponding to landslide real-scene elements in the target selected object comprise gradient, gradient rate, area and drop, and correspondingly determining actual numerical values corresponding to the terrain data types through a three-dimensional real-scene model, wherein the actual numerical values are terrain data. Because the landslide real-scene element belongs to one of the preset real-scene element disasters, an emergency project corresponding to the real-scene element and the real-time position of the emergency project need to be determined. The method comprises the steps of determining the geographic characteristics of the environment where a real element is located based on a three-dimensional real model, determining the formation cause according to the geographic characteristics to be caused by the sliding of a mountain body from a half mountain slope, determining that the position is still likely to have diffusion and high in strength according to the topographic data, burying a down-going lane, and the half mountain slope is still likely to slide on a large-volume mountain body, so that the danger coefficient corresponding to the real element can be determined to be high, and determining the emergency project corresponding to the real element to be a retaining wall based on the danger coefficient and the formation cause. And the single-sided backer can be determined according to the geographic characteristics corresponding to the real scene element, a straight retaining wall can be built on the mountain foot, and the height and thickness of the retaining wall are determined according to the topographic data of the disaster real scene element (the landslide quantity is predicted according to the topographic data), the implementation position (the distance between the disaster real scene element and an important protection main body-a lane is determined according to the implementation position) and the three-dimensional real scene model (the wall-building size of the implementation position can be determined).
For better understanding, another specific application scenario is improved: when a selection instruction triggered by a user is received, determining that a target selection object corresponding to the selection instruction is a point, further determining whether a live-action element corresponding to the point is a disaster live-action element, if so, expanding the point to a model area, acquiring terrain data by determining a terrain data type corresponding to the expanded model area, and determining an emergency project corresponding to the disaster live-action element; if not, outputting the topographic data of the point as specific coordinates.
In the technical scheme disclosed in the embodiment, the three-dimensional live-action model constructed by aerial photography images automatically acquires the topographic data of the target selected object, and when the live-action element corresponding to the target selected object is a disaster live-action element, the emergency engineering and the real-time position corresponding to the disaster live-action element are rapidly determined. And the engineering structure parameters of the emergency engineering are correspondingly determined according to the terrain data, the implementation position and the three-dimensional real model, so that an emergency scheme for constructing the emergency engineering can be rapidly generated, and the efficiency of constructing the emergency engineering can be improved.
In addition, the embodiment of the invention also provides an emergency topographic data acquisition system, which comprises a memory, a processor and an emergency topographic data acquisition program stored in the memory and capable of running on the processor, wherein the emergency topographic data acquisition program realizes the steps of the emergency topographic data acquisition method in each embodiment when being executed by the processor.
In addition, the embodiment of the invention also provides a computer readable storage medium, wherein the computer readable storage medium stores an emergency topographic data acquisition program, and the emergency topographic data acquisition program realizes the steps of the emergency topographic data acquisition method according to each embodiment.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The foregoing embodiment numbers of the present invention are merely for the purpose of description, and do not represent the advantages or disadvantages of the embodiments.
From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present invention may be embodied essentially or partly in the form of a software product stored in a storage medium (e.g. ROM/RAM, magnetic disk, optical disk) as described above, comprising instructions for causing an emergency topography data acquisition system to perform the method according to the various embodiments of the present invention.
The foregoing description is only of the preferred embodiments of the present invention, and is not intended to limit the scope of the invention, but rather is intended to cover any equivalents of the structures or equivalent processes disclosed herein or in the alternative, which may be employed directly or indirectly in other related arts.
Claims (4)
1. An emergency topographic data acquisition method, characterized in that the emergency topographic data acquisition method comprises:
when disaster report information is received, performing text recognition or voice recognition on the disaster report information, and determining a disaster address in the disaster report information;
determining the position and the occupied area of a disaster site based on the disaster address, and determining a nodding point and a plurality of side shooting points based on the position and the occupied area of the disaster site;
controlling the unmanned aerial vehicle to navigate to the depression point and the side photographing points respectively, and collecting aerial images in the navigation process;
Dividing the aerial image into encryption partitions, and determining connection points in the encryption partitions;
Splicing connection points in each aerial image to determine a blank three-dimensional model;
determining texture features of each encryption partition based on the aerial images, and mapping the texture features into the blank three-dimensional model to obtain a three-dimensional live-action model;
determining a target selected object in the three-dimensional live-action model and a live-action element corresponding to the target selected object, wherein the target selected object is a coordinate point, a line segment or a region, and the live-action element is a road, a side slope, a river, a forest, a landslide or a fire scene;
determining the element number of the live-action elements in the target selected object;
Determining a terrain data type according to the live-action elements and the element quantity, wherein the terrain data type is gradient, coordinates, length and/or volume;
Adding a detail display interface of the target selection object, and displaying the terrain data type and the corresponding terrain data in the detail display interface;
When the real scene element is a disaster real scene element, determining the geographic characteristics of the environment where the real scene element is positioned based on the three-dimensional real scene model, and acquiring current meteorological information;
determining the formation reason of the live-action element according to the geographic features and the meteorological information;
Predicting the diffusion range of the live-action element and the disaster intensity corresponding to the diffusion range according to the topographic data and the formation reason;
determining an important protection main body in the diffusion range;
Determining a disaster bearing capacity coefficient of the key protection main body according to personnel conditions, building strength and dangerous goods information of the key protection main body;
Determining a risk coefficient according to the disaster intensity corresponding to the diffusion range and the disaster bearing capacity coefficient;
When the risk coefficient is larger than a preset coefficient, matching emergency projects corresponding to the live-action elements according to the formation reasons;
determining an implementation position according to the geographic features and the emergency engineering;
determining engineering structure parameters corresponding to the emergency engineering according to the terrain data, the implementation position and the three-dimensional live-action model;
outputting an emergency scheme corresponding to the emergency project according to the implementation position and the project structure parameter;
the step of determining a target selected object in the three-dimensional live-action model and a live-action element corresponding to the target selected object comprises the following steps:
acquiring a selection instruction triggered by a user, and determining the target selected object according to the selection instruction;
And determining texture features and model structural features corresponding to the target selected object based on the three-dimensional live-action model, and determining the live-action elements according to the texture features and the model structural features corresponding to the target selected object.
2. The emergency terrain data acquisition method of claim 1, wherein the step of determining a target selection object in the three-dimensional live-action model and a live-action element corresponding to the target selection object includes:
dividing the three-dimensional live-action model into a plurality of model areas based on texture features of the three-dimensional live-action model;
determining real scene elements corresponding to the model area based on the texture features and the model structure features of the model area;
and when the live-action element is a disaster live-action element, determining the model area as the target selected object.
3. An emergency terrain data acquisition system, the emergency terrain data acquisition system comprising: a memory, a processor and an emergency terrain data acquisition program stored on the memory and executable on the processor, which when executed by the processor implements the steps of the emergency terrain data acquisition method of any of claims 1 to 2.
4. A computer readable storage medium, characterized in that the computer readable storage medium has stored thereon an emergency terrain data acquisition program, which when executed by a processor, implements the steps of the emergency terrain data acquisition method according to any of claims 1 to 2.
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