CN111915729B - Simulation display method and system for three-dimensional GIS information - Google Patents
Simulation display method and system for three-dimensional GIS information Download PDFInfo
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Abstract
The invention relates to the technical field of geographic information, and discloses a simulation display method and a simulation display system for three-dimensional GIS information, wherein the simulation display method for the three-dimensional GIS information comprises the following steps: the method comprises the steps of obtaining three-dimensional GIS information of a target area, conducting preset correction processing on the three-dimensional GIS information to obtain target GIS information, conducting three-dimensional modeling based on the target GIS information to obtain a three-dimensional GIS model, rendering the three-dimensional GIS model, and sending the rendered three-dimensional GIS model to a client side for simulation display. The three-dimensional GIS information is subjected to preset correction processing to improve the acquisition precision of the three-dimensional GIS information, and the precision of a three-dimensional GIS model established based on the three-dimensional GIS information is also improved. By rendering the three-dimensional GIS model, the three-dimensional effect and the sense of reality of the three-dimensional GIS model are improved, and the simulation effect during subsequent display on a client is also improved.
Description
Technical Field
The invention relates to the technical field of geographic information, in particular to a method and a system for simulating and displaying three-dimensional GIS information.
Background
A Geographic Information System (GIS), sometimes called a "Geographic Information System" or a "resource and environment Information System", is a specific and very important spatial Information System, and is a technical System capable of collecting, storing, managing, operating, analyzing, displaying and describing Geographic distribution data in the whole or part of the space of the earth surface layer (including the atmosphere) under the support of a computer hardware and software System. The method is widely applied to a plurality of technical fields (such as urban planning, tourist attraction development, real estate virtual reality three-dimensional display and the like), but the display of geographic information cannot be separated no matter in which field. Compared with the prior art that the geographic information is displayed in a chart or two-dimensional geometric figure mode, the three-dimensional GIS technology can express the geographic information more intuitively and truerly, the two-dimensional GIS technology has incomparable advantages and is also an inevitable trend of geographic information technology development, but the prior art has little involvement in hunting on simulation display of the three-dimensional GIS information and does not have a complete display system, so that how to perform simulation display on the three-dimensional GIS information becomes a problem to be solved urgently.
The above is only for the purpose of assisting understanding of the technical aspects of the present invention, and does not represent an admission that the above is prior art.
Disclosure of Invention
The invention mainly aims to provide a method and a system for simulating and displaying three-dimensional GIS information, and aims to solve the technical problem of how to simulate and display the three-dimensional GIS information.
In order to achieve the above object, the present invention provides a method for displaying three-dimensional GIS information in a simulation manner, wherein the method for displaying three-dimensional GIS information in a simulation manner comprises the following steps:
acquiring three-dimensional GIS information of a target area, and performing preset correction processing on the three-dimensional GIS information to obtain target GIS information;
performing three-dimensional modeling based on the target GIS information to obtain a three-dimensional GIS model;
rendering the three-dimensional GIS model, and sending the rendered three-dimensional GIS model to a client for simulation display.
Preferably, the step of performing three-dimensional modeling based on the target GIS information to obtain a three-dimensional GIS model specifically includes:
determining a target GIS object of the target area according to the target GIS information;
carrying out element decomposition on the target GIS object to obtain GIS constituent elements of the target GIS object, and establishing a mapping relation between the target GIS object and the GIS constituent elements;
and carrying out three-dimensional modeling on the GIS constituent elements according to the target GIS information and the mapping relation to obtain a three-dimensional GIS model.
Preferably, the step of performing three-dimensional modeling on the GIS constituent elements according to the target GIS information and the mapping relationship to obtain a three-dimensional GIS model specifically includes:
classifying the GIS constituent elements according to a preset drawing rule to obtain standard GIS elements and high-order GIS elements;
respectively carrying out three-dimensional modeling on the standard GIS element and the high-order GIS element according to the target GIS information and the mapping relation to obtain a corresponding standard GIS model and a corresponding high-order GIS model;
and merging and drawing the standard GIS model and the high-order GIS model to obtain a three-dimensional GIS model.
Preferably, the step of performing three-dimensional modeling on the standard GIS element and the high-order GIS element respectively according to the target GIS information and the mapping relationship to obtain a corresponding standard GIS model and a corresponding high-order GIS model specifically includes;
inputting the standard GIS elements into a first modeling channel, and performing three-dimensional modeling on the standard GIS elements according to the target GIS information, the mapping relation and modeling rules corresponding to the first modeling channel to obtain a standard GIS model;
and inputting the high-order GIS elements into a second modeling channel, and performing three-dimensional modeling on the high-order GIS elements according to the target GIS information, the mapping relation and the modeling rule corresponding to the second modeling channel to obtain a high-order GIS model.
Preferably, the step of merging and drawing the standard GIS model and the high-order GIS model to obtain a three-dimensional GIS model specifically includes:
performing edge detection on the standard GIS model and the high-order GIS model to obtain edge detection points;
identifying target feature points of the target GIS object based on the target GIS information;
and performing self-adaptive splicing on the standard GIS model in the first modeling channel and the high-order GIS model in the second modeling channel according to the edge detection point and the target characteristic point to obtain a three-dimensional GIS model.
Preferably, the step of rendering the three-dimensional GIS model and sending the rendered three-dimensional GIS model to a client for simulation display includes:
acquiring a preset three-dimensional auxiliary parameter, and performing three-dimensional auxiliary processing on the three-dimensional GIS model according to the three-dimensional auxiliary parameter;
performing picture rendering on the three-dimensional GIS model subjected to the three-dimensional auxiliary processing to generate a GIS simulation model;
and converting the GIS simulation model into a GIS simulation animation and sending the GIS simulation animation to a client so that the client can display the GIS simulation animation.
Preferably, the step of converting the GIS simulation model into a GIS simulation animation and sending the GIS simulation animation to a client, so that the client performs simulation display on the GIS simulation animation specifically includes:
acquiring identification link information of the GIS simulation model under different frames, and extracting target identification information from the identification link information;
generating a GIS simulation animation based on the GIS simulation model and the target identification information, and sending the GIS simulation animation to a client so that the client displays the GIS simulation animation.
Preferably, the step of obtaining three-dimensional GIS information of the target area and performing preset correction processing on the three-dimensional GIS information to obtain target GIS information specifically includes:
acquiring GIS image information and GIS position information of a target area;
performing image correction on the GIS image information to obtain target image information;
and correcting the position of the GIS position information to obtain target position information, and taking the target image information and the target position information as target GIS information.
Preferably, the step of performing image correction on the GIS image information to obtain target image information specifically includes:
performing preset interference removal processing on the GIS image information to obtain initial-order image information;
acquiring a lens distortion parameter corresponding to a preset GIS information acquisition device, and establishing a preset distortion correction model according to the lens distortion parameter;
inputting the initial-order image information into the preset distortion correction model, and performing image geometric correction on the GIS image information to obtain target image information;
correspondingly, the step of performing position correction on the GIS position information to obtain target position information, and taking the target image information and the target position information as target GIS information specifically includes:
performing precision verification on the GIS position information to obtain initial-order position information meeting a preset positioning precision standard;
and performing coordinate conversion on the initial-order position information to obtain target position information conforming to a preset coordinate system, and taking the target image information and the target position information as target GIS information.
In addition, in order to achieve the above object, the present invention further provides a simulation display system for three-dimensional GIS information, including:
the information acquisition module is used for acquiring three-dimensional GIS information of a target area, and performing preset correction processing on the three-dimensional GIS information to obtain target GIS information;
the model construction module is used for carrying out three-dimensional modeling based on the target GIS information to obtain a three-dimensional GIS model;
and the simulation display module is used for rendering the three-dimensional GIS model and sending the rendered three-dimensional GIS model to a client for simulation display.
The method comprises the steps of obtaining three-dimensional GIS information of a target area, conducting preset correction processing on the three-dimensional GIS information to obtain target GIS information, conducting three-dimensional modeling based on the target GIS information to obtain a three-dimensional GIS model, rendering the three-dimensional GIS model, and sending the rendered three-dimensional GIS model to a client side for simulation display. The three-dimensional GIS information is subjected to preset correction processing to improve the acquisition precision of the three-dimensional GIS information, and the precision of a three-dimensional GIS model subsequently established based on the three-dimensional GIS information is further improved. By rendering the three-dimensional GIS model, the three-dimensional effect and the sense of reality of the three-dimensional GIS model are improved, and the simulation effect and the reduction degree of three-dimensional GIS information during subsequent display on a client are also improved.
Drawings
Fig. 1 is a schematic flow chart of a first embodiment of a simulation display method of three-dimensional GIS information according to the present invention;
FIG. 2 is a schematic flow chart of a simulation display method of three-dimensional GIS information according to a second embodiment of the present invention;
FIG. 3 is a schematic flow chart of a third embodiment of a method for displaying three-dimensional GIS information in a simulation manner according to the present invention;
fig. 4 is a schematic structural diagram of a simulation display system of three-dimensional GIS information according to a first embodiment of the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The embodiment of the invention provides a simulation display method of three-dimensional GIS information, and referring to FIG. 1, FIG. 1 is a schematic flow chart of a first embodiment of the simulation display method of the three-dimensional GIS information.
In this embodiment, the simulation display method for three-dimensional GIS information includes the following steps:
step S10: acquiring three-dimensional GIS information of a target area, and performing preset correction processing on the three-dimensional GIS information to obtain target GIS information;
it should be noted that, before acquiring the three-dimensional GIS information, a target area needs to be defined, and then the acquisition of the three-dimensional GIS information of the target area is realized by presetting a GIS information acquisition device (such as an unmanned aerial vehicle aerial photography device carrying a measurement lens) or a known GIS information survey database, where the target area may be an area to be measured, and in a specific implementation, a person skilled in the art may set the target area according to an actual requirement, which is not limited in this example, the three-dimensional GIS information may be an information expression form used for expressing geographic distribution data of the target area, such as GIS position information, GIS image information, and the like, and after acquiring the three-dimensional GIS information, the three-dimensional GIS information may be subjected to preset correction processing to obtain the target GIS information. The preset correction processing may be image correction of the GIS image information to obtain target image information, position correction of the GIS position information to obtain target position information, and taking the target image information and the target position information as target GIS information. The three-dimensional GIS information is subjected to preset correction processing and correction to improve the acquisition precision of the three-dimensional GIS information, and the precision of a three-dimensional GIS model subsequently established based on the three-dimensional GIS information is further improved.
Step S20: performing three-dimensional modeling based on the target GIS information to obtain a three-dimensional GIS model;
it is easy to understand that, when performing three-dimensional modeling based on the obtained target GIS information, different three-dimensional models may be established according to different target GIS information, in a specific implementation, the information composition of the target GIS information may be determined first, then different modeling manners may be determined according to the information composition, different three-dimensional models may be obtained, and then the different three-dimensional models may be merged and drawn to obtain a three-dimensional GIS model, and the specific modeling manner may refer to a subsequent embodiment, which is not described in detail in this embodiment. By distinguishing the information composition of the target GIS information and establishing different three-dimensional models based on different information compositions, the diversity and compatibility of model construction are improved, and different modeling modes are adopted for different information compositions, so that the modeling speed and the modeling precision are improved.
Step S30: rendering the three-dimensional GIS model, and sending the rendered three-dimensional GIS model to a client for simulation display.
It should be noted that the client, also called as a user end, refers to a workstation providing local services for a user, and can be placed on a device, such as a smart phone, a tablet computer, or a computer, capable of receiving control and management of a network server and sharing various resources on the network. After the three-dimensional GIS model is obtained, a preset three-dimensional auxiliary parameter can be obtained, three-dimensional auxiliary processing is carried out on the three-dimensional GIS model according to the three-dimensional auxiliary parameter, the preset three-dimensional auxiliary parameter can be the composition type (such as a land distribution model, a water distribution model, a building model, a vegetation model and the like) and the position of a feature point of the three-dimensional GIS model, the three-dimensional auxiliary processing comprises proportion adjustment, a specific proportion adjustment mode can carry out proportion adjustment on a display picture of the three-dimensional GIS model according to the three-dimensional auxiliary parameter so as to meet a preset imaging proportion rule, the preset imaging proportion rule can be a proportion parameter corresponding to the composition type in a historical rendering database or a proportion coefficient corresponding to the composition type in a preset proportion relation mapping table, and then the light source effect and the material quality of the surface of the three-dimensional GIS model after the three-dimensional auxiliary processing are rendered according to the composition type and the position of the feature point And generating a GIS simulation model to improve the three-dimensional effect and the sense of reality of the three-dimensional GIS model and improve the simulation effect when the three-dimensional GIS model is subsequently displayed on a client. In specific implementation, the GIS simulation model can be directly displayed according to actual requirements, or GIS simulation animation can be generated based on the GIS simulation model and then displayed.
Furthermore, after the GIS simulation model is obtained, the identification link information of the real-time picture corresponding to the GIS simulation model in different frames may be obtained, the target identification information is extracted from the identification link information, a GIS simulation animation is generated based on the GIS simulation model and the target identification information, and the GIS simulation animation is sent to the client, so that the client displays the GIS simulation animation. In the specific implementation, a real-time picture corresponding to the GIS simulation model is displayed at a preset frequency, and target identification information is displayed in the real-time picture frame by frame, so that GIS simulation animation is generated. The target identification information is displayed in a preset area of the client frame by frame to improve the viewing experience of a user and facilitate the user to obtain key information of a current display frame in time, the identification link information can be attribute information (such as geographical position information, current development/use state, information obtaining time and the like) linked in a preset geographical information database by a three-dimensional GIS model in the current display frame, the target identification information is generated based on the identification link information and displayed frame by frame after being processed according to a preset display rule, the preset display rule is to identify the attribute information, information elements of display content required by a preset display format and corresponding to the attribute information are extracted, the information elements are subjected to adaptive matching according to the preset display format to obtain the attribute information conforming to the preset display format, i.e. the target identification information.
It should be noted that, when the GIS animation is sent to the client, so that the client displays the GIS animation, in order to improve the display effect of the client, the screen display parameters of the client may be acquired, the GIS animation is adaptively adjusted based on the screen display parameters, and then the adjusted GIS animation is sent to the client, so that the client displays the GIS animation.
It should be understood that the above is only an example, and the technical solution of the present embodiment is not limited in any way, and in a specific application, a person skilled in the art may set the technical solution as needed, and the present invention is not limited to this.
The method comprises the steps of obtaining three-dimensional GIS information of a target area, conducting preset correction processing on the three-dimensional GIS information to obtain target GIS information, conducting three-dimensional modeling based on the target GIS information to obtain a three-dimensional GIS model, rendering the three-dimensional GIS model, and sending the rendered three-dimensional GIS model to a client side for simulation display. The three-dimensional GIS model is rendered to generate a GIS simulation model, so that the three-dimensional effect and the sense of reality of the three-dimensional GIS model are improved, and the simulation effect and the three-dimensional GIS information reduction degree during display on a client are improved by converting the GIS simulation model into GIS simulation animation.
Referring to fig. 2, fig. 2 is a schematic flow chart of a simulation display method of three-dimensional GIS information according to a second embodiment of the present invention.
Based on the first embodiment described above, in the present embodiment, the step S10 includes:
step S101: acquiring GIS image information and GIS position information of a target area;
it should be noted that, when the three-dimensional GIS information is acquired for the target area, a landmark control point may be set in the target area, then a preset GIS information acquisition device (such as an unmanned aerial vehicle aerial photography device carrying a measuring lens) is combined with a preset positioning system to carry out three-dimensional GIS information acquisition on the landmark control points, the preset Positioning System can be a Beidou Satellite NAvigation System (BDS), a Galileo Satellite NAvigation System (GALILEO), a GLObal NAvigation Satellite System (GLONASS), a GLObal Positioning System (GPS) and the like, the three-dimensional GIS information comprises GIS image information and GIS position information, the GIS position information comprises longitude information, latitude information and altitude information, and the GIS image information and the GIS position information are obtained, so that the reduction degree of geographic distribution data of a target area is improved.
Step S102: performing image correction on the GIS image information to obtain target image information;
in a specific implementation, in order to further improve the reduction degree of the geographic distribution data of the target area and the accuracy of the GIS image information, preset interference-removing processing may be performed on the GIS image information to obtain initial-order image information, where the preset interference-removing processing includes dimming processing and resetting processing on the GIS image information, and the dimming processing is to adjust the hue and the exposure of a part of image data to be close to or equal to an average value of all image data if it is detected that the hue, the exposure, and the like of the part of image data are significantly lower than or higher than the average value in the process of extracting the image data from the GIS image information; the reset processing is to detect the imaging quality of all image data in the GIS image information, and when invalid image data with the imaging quality not meeting the preset image quality requirement is detected, the invalid image data can be deleted or the geographical position of the invalid image data corresponding to the target area can be re-shot. Then, acquiring a lens distortion parameter of the preset GIS information acquisition device, establishing a preset distortion correction model in a preset GIS platform according to the lens distortion parameter, inputting the initial-order image information into the preset distortion correction model, performing image geometric correction on the GIS image information to obtain target image information, wherein the image geometric correction can remove image interference through filtering processing, enhance the definition of an image frame mark, adjust the image contrast, and perform image gray scale stretching to make the visual effects of the images consistent, and correct the geometric distortion caused by the acquisition posture, height, speed, earth rotation and other factors of the preset GIS information acquisition device.
Step S103: and correcting the position of the GIS position information to obtain target position information, and taking the target image information and the target position information as target GIS information.
In a specific implementation, in order to further improve the degree of reduction of the geographic distribution data of the target area and the accuracy of the GIS location information, the accuracy verification may be performed on the GIS location information to obtain initial-order location information that meets a preset location accuracy standard, the accuracy verification may respectively verify whether the location accuracy of longitude information, latitude information, and altitude information included in the GIS location information meets the preset location accuracy standard, and the location accuracy is the proximity between the GIS location information and its actual geographic location, which may specifically be: and if the preset positioning accuracy standard is set to be 95.50%, when the GIS position information is verified, if the positioning accuracy of any item contained in the GIS position information is detected to be less than 95.50%, the GIS position information with the positioning accuracy of less than 95.50% needs to be corrected until the positioning accuracy of the GIS position information is equal to or greater than 95.50%. And then, carrying out coordinate conversion on the initial-order position information according to a preset coordinate system rule to obtain target position information conforming to the preset coordinate system, and taking the target image information and the target position information as target GIS information.
It should be understood that the above is only an example, and the technical solution of the present embodiment is not limited in any way, and in a specific application, a person skilled in the art may set the technical solution as needed, and the present invention is not limited to this.
In this embodiment, image correction is performed on the GIS image information to obtain target image information by obtaining the GIS image information and the GIS position information of a target area, position correction is performed on the GIS position information to obtain target position information, and the target image information and the target position information are used as target GIS information. By respectively correcting and processing GIS image information and GIS position information contained in the three-dimensional GIS information, the reduction degree of geographic distribution data of a target area is improved, the precision of the three-dimensional GIS information is also improved, and the precision of a three-dimensional GIS model established based on the three-dimensional GIS information is further improved.
Referring to fig. 3, fig. 3 is a schematic flow chart of a third embodiment of the simulation display method of three-dimensional GIS information according to the present invention.
Based on the first embodiment described above, in the present embodiment, the step S20 includes:
step S201: determining a target GIS object of the target area according to the target GIS information;
it is easy to understand that, in order to improve the model accuracy when subsequently establishing a three-dimensional GIS model, when determining the target GIS object according to the target GIS object, cluster analysis may be performed on the target GIS information to obtain clustered GIS information, feature information may be extracted from the clustered GIS information, and object matching may be performed in a preset object set according to the feature information to obtain a GIS object of the target region.
Step S202: carrying out element decomposition on the target GIS object to obtain GIS constituent elements of the target GIS object, and establishing a mapping relation between the target GIS object and the GIS constituent elements;
step S203: and carrying out three-dimensional modeling on the GIS constituent elements according to the target GIS information and the mapping relation to obtain a three-dimensional GIS model.
After obtaining the target GIS object, in order to further improve the modeling accuracy, the target GIS object may be subjected to elemental decomposition to obtain GIS constituent elements of the target GIS object, the GIS constituent elements may be classified according to whether or not the GIS constituent elements have corresponding elemental constituent information in a preset element set, the GIS constituent elements having corresponding elemental constituent information may be used as standard GIS elements, the GIS constituent elements having no corresponding elemental constituent information may be used as high-order GIS elements, and after decomposing a certain target GIS object (e.g., a river section of a target area), a plurality of GIS constituent elements may be obtained, the GIS constituent elements may be subjected to elemental constituent information matching in a preset element set (e.g., an element set storing elements such as soil elements, vegetation elements, water area elements, mountain range elements, etc.), and constituent elements matched to the elemental constituent information (e.g., water system element corresponding to a river section, water system element, and/land section) may be obtained, Soil elements) as standard GIS elements, using GIS elements (such as wooden piles in river sections and dams on the river sections) which are not matched with element formation information as high-order GIS elements, establishing mapping relations between the target GIS object and the standard GIS elements and between the target GIS object and the high-order GIS elements, and then respectively carrying out three-dimensional modeling on the standard GIS elements and the high-order GIS elements according to the target GIS information and the mapping relations to obtain corresponding standard GIS models and high-order GIS models;
in a specific implementation, in order to improve a modeling speed, the standard GIS element may be input into a first modeling channel of the preset GIS platform, and three-dimensional modeling may be performed on the standard GIS element according to the target GIS information, the mapping relationship, and a modeling rule corresponding to the first modeling channel to obtain a standard GIS model, where the modeling rule corresponding to the first channel may be to perform plotting processing and mapping processing on the standard GIS element according to element configuration information of the standard GIS element; and inputting the high-order GIS elements into a second modeling channel of the preset GIS platform, and performing three-dimensional modeling on the high-order GIS elements according to the target GIS information, the mapping relation and modeling rules corresponding to the second modeling channel to obtain a high-order GIS model, wherein the modeling rules corresponding to the second modeling channel can be models for drawing the high-order GIS elements by adopting a preset modeling tool.
It should be noted that after the standard GIS model and the high-order GIS model are obtained, the standard GIS model and the high-order GIS model may be merged and drawn to obtain a three-dimensional GIS model, in a specific implementation, edge detection may be performed on the standard GIS model and the high-order GIS model to obtain an edge detection point, specifically, edge feature information in the three-dimensional GIS model may be extracted based on an edge detection operator (which may be a Canny operator, a Roberts Cross operator, a Prewitt operator, a Sobel operator, a Kirsch operator, a compass operator, a Laplacian operator, etc., but is not limited in this embodiment), an edge region is determined according to the edge feature information, the edge region is detected to obtain a preliminary-order edge point, the edge region is smoothed, refined, and denoised to enhance the precision of the preliminary-order edge point, and an edge coordinate of the preliminary-order edge point is obtained, detecting the coordinate precision of the edge coordinate in real time, recording the initial-order edge point as an edge detection point when the coordinate precision meets a preset coordinate precision standard, identifying a target feature point of the target GIS object based on the target GIS information, specifically, determining the target GIS object according to the target GIS information, acquiring feature information (such as contour information, plane connection information and the like) corresponding to the target GIS object, acquiring the target feature point by identifying the feature information, extracting the preset object according to the type of the target GIS object, extracting the target feature points of different GIS objects input in advance, and adaptively splicing the standard GIS model in the first modeling channel and the high-order GIS model in the second modeling channel according to the edge detection point and the target feature point, and obtaining a three-dimensional GIS model. The standard GIS model and the high-order GIS model are subjected to the differential modeling, so that the modeling speed and the modeling precision are improved, and the standard GIS model and the high-order GIS model are merged and drawn, so that the simulation effect of the obtained three-dimensional GIS model is further improved.
It should be understood that the above is only an example, and the technical solution of the present embodiment is not limited in any way, and in a specific application, a person skilled in the art may set the technical solution as needed, and the present invention is not limited to this.
In this embodiment, a target GIS object in the target area is determined according to the target GIS information, the target GIS object is subjected to element decomposition to obtain GIS constituent elements of the target GIS object, a mapping relationship between the target GIS object and the GIS constituent elements is established, the GIS constituent elements are subjected to three-dimensional modeling according to the target GIS information and the mapping relationship to obtain a three-dimensional GIS model, the three-dimensional GIS object is decomposed to obtain a standard GIS model and a high-order GIS model, the standard GIS model and the high-order GIS model are respectively modeled to improve the precision of the three-dimensional GIS model, further, the standard GIS model and the high-order GIS model are modeled according to different modeling rules to improve the modeling speed, and the standard GIS model and the high-order GIS model are merged and drawn to obtain the three-dimensional model, so as to improve the simulation effect of the three-dimensional GIS model.
Referring to fig. 4, fig. 4 is a schematic structural diagram of a first embodiment of the simulation display system of three-dimensional GIS information according to the present invention.
As shown in fig. 4, the simulation display system of three-dimensional GIS information provided by the embodiment of the present invention includes:
the information acquisition module 10 is configured to acquire three-dimensional GIS information of a target area, and perform preset correction processing on the three-dimensional GIS information to acquire target GIS information;
the model construction module 20 is used for performing three-dimensional modeling based on the target GIS information to obtain a three-dimensional GIS model;
and the simulation display module 30 is configured to render the three-dimensional GIS model, and send the rendered three-dimensional GIS model to a client for simulation display.
The method comprises the steps of obtaining three-dimensional GIS information of a target area, conducting preset correction processing on the three-dimensional GIS information to obtain target GIS information, conducting three-dimensional modeling based on the target GIS information to obtain a three-dimensional GIS model, rendering the three-dimensional GIS model, and sending the rendered three-dimensional GIS model to a client side for simulation display. The three-dimensional GIS model is rendered to generate a GIS simulation model, so that the three-dimensional effect and the sense of reality of the three-dimensional GIS model are improved, and the simulation effect and the three-dimensional GIS information reduction degree during display on a client are improved by converting the GIS simulation model into GIS simulation animation.
Other embodiments or specific implementation manners of the simulation display system of three-dimensional GIS information of the present invention may refer to the above method embodiments, and are not described herein again.
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 an … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (e.g., a rom/ram, a magnetic disk, an optical disk) and includes instructions for enabling a terminal device (e.g., a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (7)
1. A simulation display method of three-dimensional GIS information is characterized by comprising the following steps:
acquiring three-dimensional GIS information of a target area, and performing preset correction processing on the three-dimensional GIS information to obtain target GIS information;
performing three-dimensional modeling based on the target GIS information to obtain a three-dimensional GIS model;
rendering the three-dimensional GIS model, and sending the rendered three-dimensional GIS model to a client for simulation display;
the step of performing three-dimensional modeling based on the target GIS information to obtain a three-dimensional GIS model specifically comprises:
determining a target GIS object of the target area according to the target GIS information;
carrying out element decomposition on the target GIS object to obtain GIS constituent elements of the target GIS object, and establishing a mapping relation between the target GIS object and the GIS constituent elements;
classifying the GIS constituent elements according to a preset drawing rule to obtain standard GIS elements and high-order GIS elements;
inputting the standard GIS elements into a first modeling channel, and performing three-dimensional modeling on the standard GIS elements according to the target GIS information, the mapping relation and modeling rules corresponding to the first modeling channel to obtain a standard GIS model;
inputting the high-order GIS elements into a second modeling channel, and performing three-dimensional modeling on the high-order GIS elements according to the target GIS information, the mapping relation and modeling rules corresponding to the second modeling channel to obtain a high-order GIS model;
and merging and drawing the standard GIS model and the high-order GIS model to obtain a three-dimensional GIS model.
2. The method for displaying the three-dimensional GIS information in a simulation manner according to claim 1, wherein the step of merging and drawing the standard GIS model and the high-order GIS model to obtain the three-dimensional GIS model specifically comprises:
performing edge detection on the standard GIS model and the high-order GIS model to obtain edge detection points;
identifying target feature points of the target GIS object based on the target GIS information;
and performing self-adaptive splicing on the standard GIS model in the first modeling channel and the high-order GIS model in the second modeling channel according to the edge detection point and the target characteristic point to obtain a three-dimensional GIS model.
3. The method for displaying the three-dimensional GIS information in a simulation manner according to any one of claims 1-2, wherein the step of rendering the three-dimensional GIS model and sending the rendered three-dimensional GIS model to a client for displaying in a simulation manner specifically comprises the following steps:
acquiring a preset three-dimensional auxiliary parameter, and performing three-dimensional auxiliary processing on the three-dimensional GIS model according to the three-dimensional auxiliary parameter;
performing picture rendering on the three-dimensional GIS model subjected to the three-dimensional auxiliary processing to generate a GIS simulation model;
and converting the GIS simulation model into a GIS simulation animation and sending the GIS simulation animation to a client so that the client can display the GIS simulation animation.
4. The method for displaying the three-dimensional GIS information in a simulation manner according to claim 3, wherein the step of converting the GIS simulation model into the GIS simulation animation and sending the GIS simulation animation to the client, so that the client performs the simulation display on the GIS simulation animation specifically comprises:
acquiring identification link information of real-time pictures corresponding to the GIS simulation model under different frames, and extracting target identification information from the identification link information;
generating a GIS simulation animation based on the GIS simulation model and the target identification information, and sending the GIS simulation animation to a client so that the client displays the GIS simulation animation.
5. The method for displaying the three-dimensional GIS information in a simulation manner according to claim 1, wherein the step of obtaining the three-dimensional GIS information of the target area and performing the preset correction processing on the three-dimensional GIS information to obtain the target GIS information specifically comprises:
acquiring GIS image information and GIS position information of a target area;
performing image correction on the GIS image information to obtain target image information;
and correcting the position of the GIS position information to obtain target position information, and taking the target image information and the target position information as target GIS information.
6. The method for displaying the three-dimensional GIS information in a simulation manner according to claim 5, wherein the step of performing image correction on the GIS image information to obtain the target image information specifically comprises:
performing preset interference removal processing on the GIS image information to obtain initial-order image information;
acquiring a lens distortion parameter corresponding to a preset GIS information acquisition device, and establishing a preset distortion correction model according to the lens distortion parameter;
inputting the initial-order image information into the preset distortion correction model, and performing image geometric correction on the GIS image information to obtain target image information;
correspondingly, the step of performing position correction on the GIS position information to obtain target position information, and taking the target image information and the target position information as target GIS information specifically includes:
performing precision verification on the GIS position information to obtain initial-order position information meeting a preset positioning precision standard;
and performing coordinate conversion on the initial-order position information to obtain target position information conforming to a preset coordinate system, and taking the target image information and the target position information as target GIS information.
7. The simulation display system of the three-dimensional GIS information is characterized by comprising the following components:
the information acquisition module is used for acquiring three-dimensional GIS information of a target area, and performing preset correction processing on the three-dimensional GIS information to obtain target GIS information;
the model construction module is used for carrying out three-dimensional modeling based on the target GIS information to obtain a three-dimensional GIS model;
the simulation display module is used for rendering the three-dimensional GIS model and sending the rendered three-dimensional GIS model to a client for simulation display;
the model construction module is also used for carrying out element decomposition on the target GIS object, obtaining GIS constituent elements of the target GIS object and establishing a mapping relation between the target GIS object and the GIS constituent elements;
the model construction module is also used for classifying the GIS constituent elements according to a preset drawing rule to obtain standard GIS elements and high-order GIS elements;
the model construction module is further used for inputting the standard GIS elements into a first modeling channel, and performing three-dimensional modeling on the standard GIS elements according to the target GIS information, the mapping relation and modeling rules corresponding to the first modeling channel to obtain a standard GIS model;
the model construction module is further configured to input the high-order GIS elements into a second modeling channel, and perform three-dimensional modeling on the high-order GIS elements according to the target GIS information, the mapping relationship and modeling rules corresponding to the second modeling channel to obtain a high-order GIS model;
and the model construction module is also used for merging and drawing the standard GIS model and the high-order GIS model to obtain a three-dimensional GIS model.
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