CN112132964A - Digital country construction management and control system and method based on mediated reality technology - Google Patents
Digital country construction management and control system and method based on mediated reality technology Download PDFInfo
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- CN112132964A CN112132964A CN202010829363.1A CN202010829363A CN112132964A CN 112132964 A CN112132964 A CN 112132964A CN 202010829363 A CN202010829363 A CN 202010829363A CN 112132964 A CN112132964 A CN 112132964A
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Abstract
The invention relates to a digital country construction management and control system and a method based on a mediated reality technology, which comprises the following steps: 1. acquiring three-dimensional data of original landform and landform of a pre-built area, and performing three-dimensional pre-modeling on a target form of the area to be built to obtain a target model of the pre-built area; 2. superposing the pre-built area model and the original point cloud data of the building area to obtain a future three-dimensional map (target model) of the building area; 3. collecting point cloud data of a construction area in real time, dynamically updating a current three-dimensional map of the construction area, and displaying the latest construction state in a real-time visual manner; and comparing the constructed state (real-time current situation diagram) with the target model of the pre-constructed region in real time, judging whether illegal construction or wrong construction behaviors exist or not through video superposition calculation analysis, and sending an early warning signal to monitoring personnel if the illegal construction or wrong construction behaviors exist after comparison. The system can digitally control the construction condition of the village in real time in the whole process, and is helpful for providing high-efficiency and accurate management and control service for implementation of digital village construction for management departments.
Description
Technical Field
The invention relates to a three-dimensional model modeling and control method, belongs to the field of three-dimensional modeling, and particularly relates to a digital country construction control system and method based on a mediated reality technology.
Background
In recent years, rural economy in China is rapidly developed, and the pace of urbanization construction is gradually accelerated. However, compared with urban construction, rural construction is disordered too much, and the healthy development of modern rural construction is restricted. Meanwhile, behaviors such as illegal occupation of cultivated land and illegal construction not only infringe national interests, but also bring new problems to green sustainable development of rural areas. Therefore, how to apply the modern technical means and effectively monitor and early warn the construction of the rural project from the source is very important.
Increasingly perfect satellite remote sensing service and unmanned aerial vehicle technology in China can accurately and comprehensively realize two-dimensional and three-dimensional data acquisition in rural target areas. Monitoring personnel can realize monitoring in a mode mainly based on manual check through target area data acquired in real time. How to combine the latest leading-edge technologies and technologies such as artificial intelligence and mediated reality, the method realizes the full-automatic rural construction, provides visual and visual full-process monitoring and control, and has strong practical significance and application value.
Disclosure of Invention
The invention mainly solves the problem that the prior art cannot provide comprehensive, visual, intelligent and visual rural construction full-process monitoring, and provides a digital rural construction management and control system and method based on a mediated reality technology.
The technical scheme for solving the technical problems is as follows:
a digital country construction management and control method based on a mediated reality technology comprises the following steps:
step 1, collecting three-dimensional data of original landform and landform of a pre-built area to obtain original point cloud data of the built area; the method comprises the following steps of building area three-dimensional pre-modeling, namely performing three-dimensional pre-modeling on a target form of a building area to obtain a pre-built target model;
step 2, overlapping the pre-built model and the original point cloud data of the construction area to obtain a future three-dimensional map (target model) of the construction area;
step 3, collecting point cloud data of the construction area in real time in the construction process, updating a three-dimensional original image of the construction area, and displaying the latest state of the construction area in a real-time visual manner; in the construction process, the real-time construction state under construction is compared with the pre-built target model, whether illegal construction behaviors or wrong construction behaviors exist is judged, and if the illegal construction behaviors or wrong construction behaviors exist, an early warning signal is sent to monitoring personnel.
Further, the method also comprises the steps of country construction correction and decision assistance, and specifically comprises the following steps:
step 4.1, when the construction is judged to have illegal or wrong construction behavior, the rectification and the modification are informed;
4.2, informing the optimal rectification scheme in a visual mode through online editing of the point cloud data of the area under construction;
4.3, after the rectification is finished, acquiring the point cloud data of the area under construction again, and checking whether the rectified point cloud data meets the requirements; if there is still a problem, the rectification is continued to be notified until the rectification is fully compliant.
Further, the step 1 of acquiring the three-dimensional data of the original landform of the pre-established area specifically includes the following steps:
step 1.1, acquiring three-dimensional data, namely original point cloud data, of a pre-built area by using an airborne laser radar;
step 1.2, preprocessing the collected original point cloud data, and respectively extracting ground data and non-ground data;
step 1.3, for an area with sparse point cloud, re-collecting point cloud data of the area;
and step 1.4, storing all data in an LAS format for storage after finishing sorting and checking.
Further, the step 3 specifically includes the following steps:
step 3.1, regularly scanning data of the built area;
3.2, periodically scanning a construction area by adopting an airborne laser radar carried by an unmanned aerial vehicle according to a preset frequency to obtain real-time three-dimensional point cloud data;
3.3, determining a building area by the point cloud data collected in real time, comparing the building area with a pre-built target model, judging whether the building area exceeds a closed area surrounded by the pre-built target model, if the building area exceeds the closed area of the pre-built target model, judging that illegal building or wrong building behaviors exist in the building area, and if the illegal building or wrong building behaviors exist, sending an early warning signal to monitoring personnel; if the point cloud does not exceed the closed area of the pre-built target model, the building compliance is preliminarily judged, the points in the point cloud are colored into preset colors, dynamic visual display is carried out to judge whether reasonable construction is carried out according to the preset plan, and the latest construction progress is dynamically displayed.
The digital country construction management and control system based on the mediated reality technology comprises a three-dimensional pre-modeling module, a construction area point cloud data acquisition module, a superposition registration module and a three-dimensional dynamic simulation module based on the MR technology, wherein the construction area three-dimensional pre-modeling module is used for performing three-dimensional pre-modeling on a target form of an area to be constructed to obtain a pre-constructed target model; the construction area point cloud data acquisition module is used for acquiring three-dimensional data of original landform and landform of a pre-construction area to obtain original point cloud data of the construction area; the superposition registration module is used for superposing the pre-built model and the original point cloud data of the construction area to obtain a three-dimensional original image of the construction area; the three-dimensional dynamic simulation module based on the MR technology is used for acquiring point cloud data of a construction area in real time in the construction process, updating a three-dimensional original map of the construction area and displaying the latest state of the construction area in a real-time visual manner; in the construction process, the real-time construction state is compared with the pre-constructed target model, whether illegal construction or wrong construction behaviors exist is judged, and if the illegal construction or wrong construction behaviors exist, an early warning signal is sent to monitoring personnel.
The system comprises a building area correction and decision auxiliary module, a data acquisition module and a data processing module, wherein the building area correction and decision auxiliary module is used for informing rectification when a building area is judged to have illegal or wrong building behaviors, informing an optimal rectification scheme in a visual form through online editing of point cloud data of the building area, acquiring the point cloud data of the building area again after rectification is finished, and checking whether the point cloud data meets requirements after rectification; if there is still a problem, the rectification is continued to be notified until the rectification is fully compliant.
Further, the construction area point cloud data acquisition module is used for acquiring three-dimensional data, namely original point cloud data, of the pre-construction area by using an airborne laser radar; preprocessing the acquired original point cloud data, and respectively extracting ground data and non-ground data; for the area with sparse point cloud, re-collecting the point cloud data of the area; and after finishing the sorting and checking of all the data, storing the data in an LAS format for storage.
Further, the three-dimensional dynamic simulation module based on the MR technology is used for periodically scanning data of the built region; an airborne laser radar carried by an unmanned aerial vehicle is adopted to periodically scan a construction area according to a preset frequency, and real-time three-dimensional point cloud data is obtained; the method comprises the steps that point cloud data collected in real time are determined in a building area, the building area is compared with a pre-built target model, whether the building area exceeds a closed area surrounded by the pre-built target model or not is judged, if the building area exceeds the closed area of the pre-built target model, whether illegal building or wrong building behaviors exist in building is judged, and if the illegal building or wrong building behaviors exist, an early warning signal is sent to monitoring personnel; if the point cloud does not exceed the closed area of the pre-built target model, the building compliance is preliminarily judged, the points in the point cloud are colored into preset colors, dynamic visual display is carried out to judge whether reasonable construction is carried out according to the preset plan, and the latest construction progress is dynamically displayed.
The invention has the beneficial effects that: the invention manages and tracks the construction condition in real time by three-dimensional pre-modeling of the declared area to be built and comparing the real-time data acquired in the whole process with the pre-built model, provides early warning service for illegal addition and reconstruction, can help management departments to comprehensively manage and monitor the whole-process construction condition, and is convenient to use.
Drawings
FIG. 1 is a schematic flow chart of the method of the present invention.
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.
As shown in fig. 1, the method for managing and controlling digital country construction based on the mediated reality technology of the present invention mainly realizes the full-flow three-dimensional visualization management and control of the country construction by the following technical solutions, and the specific implementation steps include:
the method comprises the steps of constructing a three-dimensional pre-modeling step, wherein the three-dimensional pre-modeling step is used for semi-automatically completing the three-dimensional pre-modeling of an area to be constructed, and a model of the modeling is a basis of a subsequent real-constructed area. The specific implementation method comprises the following steps:
1) providing 1 set of semi-automatic modeling tool software supported by WebGL and three.js libraries;
2) the tool software integrates basic component models of common construction projects, such as walls, roofs, stairs, doors and windows and the like;
3) a user drags and combines the basic components, sets the length, the width and the height of the basic components, and builds a pre-built three-dimensional model step by step;
4) the pre-built model needs to be subjected to topology analysis, and no topology error generated in the combination process exists;
5) the three-dimensional model is stored in an OBJ format, and basic components can be rotated, zoomed and modified;
6) finally, the pre-built region is output as a whole.
Particularly, if the modeling software cannot be used skillfully, the pre-built model can be built step by step in a real-time visual mode under the guidance and assistance of technicians in administrative departments of rural construction.
And secondly, a construction area point cloud data acquisition step, which is used for acquiring three-dimensional data of original landform and landform of the pre-construction area, so that the follow-up accurate superposition with the pre-construction model is facilitated. The specific implementation method comprises the following steps:
1) acquiring three-dimensional data of a pre-built area by using an airborne laser radar;
2) preprocessing acquired original point cloud data, and respectively extracting ground data and non-ground data from the data in an artificial mode;
3) for the area with sparse point cloud, the data of the area needs to be collected again;
4) and after finishing the sorting and checking of all the data, storing the data in an LAS format for storage.
And thirdly, overlapping and registering the construction area, wherein the overlapping and registering step is used for overlapping the pre-constructed model and the point cloud data together, so that subsequent dynamic simulation and monitoring are facilitated. The specific implementation method comprises the following steps:
1) because the previously constructed three-dimensional model can be freely rotated and zoomed, and the size is marked as the size of a real area to be constructed, the pre-constructed area model and point cloud data can be directly superposed according to the coordinate position;
2) firstly, determining a coordinate system adopted by LAS point cloud data;
3) performing plane projection on the pre-built model on a horizontal plane;
4) selecting the gravity center of the plane projection as a datum point for superposing the pre-built model and the point cloud data;
5) unifying the format of the LAS point cloud data and the OBJ format of the pre-built model into the OBJ format;
6) determining the scaling of the LAS point cloud data and the pre-built model;
7) dragging the OBJ file visualization reading tool (such as AutoCAD, Blender and the like) and the OBJ file visualization reading tool to the same scene by combining the reference point coordinate and the zoom ratio, so as to realize the integrated display of the two types of data;
8) and storing the three-dimensional data in the scene as an OBJ single file, namely realizing registration and superposition of the three-dimensional terrain point cloud data and the three-dimensional pre-established model.
In particular, during the registration and superposition process, the pre-established model can be evaluated in an auxiliary way, and the evaluation method comprises the following steps: after the reference point is determined, in the process of superposing the two, if the three-dimensional parts are overlapped, namely a topological error occurs, it is indicated that the pre-built model needs to be adjusted. This overlap occurs, for example, when the pre-built model cannot be put down on the spot due to occlusion by other buildings.
And fourthly, a three-dimensional dynamic simulation step based on the MR technology, wherein the step realizes the superposition display of the three-dimensional terrain and the environmental model of the pre-built region and the pre-built complete three-dimensional model, and is used for displaying the latest construction progress in a real-time visual manner according to the data acquisition frequency in the construction process. The specific implementation method comprises the following steps:
1) because the real-time construction condition needs to be visually monitored, the data scanning of the target area needs to be completed regularly;
2) an airborne laser radar carried by an unmanned aerial vehicle is adopted to periodically scan a construction area according to a set frequency (such as every day) to obtain real-time three-dimensional point cloud data;
3) comparing the point cloud data acquired in real time with the three-dimensional data combined in the previous steps, judging whether reasonable construction is carried out according to a preset plan, and dynamically displaying the latest construction progress, wherein the specific steps are as follows:
a) preprocessing newly scanned point cloud data, dividing and extracting three-dimensional point cloud data of a part in a region under construction;
b) superposing newly scanned three-dimensional point cloud data of the construction area and pre-constructed three-dimensional data through coordinate conversion and registration steps;
c) loading and displaying a vector model of the pre-built model through a virtual reality technology in the MR technology;
d) calculating whether the three-dimensional point cloud data exceeds a closed area enclosed by the pre-built vector model;
e) if the building condition exceeds the closed area of the pre-built vector model, judging that the building area is suspicious and reporting the information to relevant departments;
f) and if the closed area of the vector model of the pre-built area is not exceeded, preliminarily detecting to be a building compliance, coloring the point in the point cloud to be a preset color, and dynamically and visually displaying the preset color.
4) Meanwhile, the on-site investigation with the intelligent mobile device as a carrier is supported, when the tablet personal computer or the smart phone is aligned to the area to be monitored, the pre-built model is automatically loaded through the augmented reality technology in the MR technology, and the size information of each component (wall, door, window and floor) is displayed. Under the condition, the intelligent equipment loads the pre-built model and is overlapped with the real-time region under construction, so that whether the building condition is violated or not can be visually observed conveniently.
And fifthly, accurately monitoring and early warning the whole construction process, and monitoring the construction condition of the whole process, including whether the construction is illegal, whether potential safety hazards exist and the like. The specific implementation method comprises the following steps:
1) independently storing the three-dimensional data of the built region collected every day;
2) constructing a GIS map service by taking the three-dimensional terrain model and the pre-established model which are constructed in the step of building area superposition registration as base maps;
3) respectively taking the independently stored three-dimensional data of the in-building area every day as a layer for management;
4) through the space analysis function, the difference between different layers can be accurately analyzed, namely the daily establishment progress and speed;
5) similar to the steps and the comparison method of the three-dimensional pre-built model, whether the illegal building behaviors exceeding the pre-declared building area exist can be found out;
6) through a manual assistance mode, professionals can also compare and analyze whether the construction area influences the construction missing and wrong behavior of the building safety;
7) all illegal building, missing building and wrong building behaviors are timely notified to monitoring personnel through a webpage pushing mode, and efficient early warning is achieved.
And sixthly, a construction area correction and decision auxiliary step, which is used for auxiliary rectification and secondary monitoring of illegal construction, missing construction and wrong construction in the construction process. The specific implementation method comprises the following steps:
1) when the monitoring personnel find that the building violation, the building omission, the wrong building and other behaviors exist in the building area, the rectification is informed;
2) a professional can inform an optimal rectification scheme in a visual mode through online editing of point cloud data of an area under construction;
3) after the rectification is finished, whether the rectified data meets the requirements or not is checked in a mode of re-acquiring data (or performing on-site flat plate reconnaissance) by the airborne laser radar;
4) if there is still a problem, repeating steps 1), 2), 3) until the rectification is fully compliant.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (8)
1. The digital country construction management and control method based on the mediated reality technology is characterized by comprising the following steps:
step 1, collecting three-dimensional data of original landform and landform of a pre-built area to obtain original point cloud data of the built area; building a three-dimensional pre-modeling of an area, namely performing three-dimensional pre-modeling on a target form of the area to be built to obtain a target model of the pre-built area;
step 2, overlapping the pre-built region model and the original point cloud data of the building region to obtain a building three-dimensional original image;
step 3, collecting point cloud data of a construction area in real time in the construction process, updating a three-dimensional original image for construction, and displaying the latest state of the construction area in a real-time visual manner; in the construction process, the real-time construction state of the in-construction area is compared with the target model of the pre-construction area, whether illegal construction or wrong construction behaviors exist is judged, and if the illegal construction or wrong construction behaviors exist, an early warning signal is sent to monitoring personnel.
2. The method for managing and controlling digital village construction based on the mediated reality technology according to claim 1, further comprising the steps of construction modification and decision assistance, and specifically comprising the steps of:
step 4.1, when the situation that the building violation or the building error behavior exists in the building area is judged, the rectification and the modification are informed;
4.2, informing the optimal rectification scheme in a visual mode through online editing of the point cloud data of the area under construction;
4.3, after the rectification is finished, acquiring the point cloud data of the area under construction again, and checking whether the rectified point cloud data meets the requirements; if there is still a problem, the rectification is continued to be notified until the rectification is fully compliant.
3. The method for managing and controlling digital village construction based on mediated reality technology according to claim 2, wherein the step 1 of collecting three-dimensional data of original topography and landform of the pre-built area specifically comprises the following steps:
step 1.1, acquiring three-dimensional data, namely original point cloud data, of a pre-built area by using an airborne laser radar;
step 1.2, preprocessing the collected original point cloud data, and respectively extracting ground data and non-ground data;
step 1.3, for the area with sparse point cloud, re-collecting point cloud data of the area;
and step 1.4, storing all data in an LAS format for storage after finishing sorting and checking.
4. The method for managing and controlling digital village construction based on mediated reality technology according to claim 2, wherein said step 3 specifically comprises the steps of:
step 3.1, regularly scanning data of the built area;
3.2, periodically scanning a construction area by adopting an airborne laser radar carried by an unmanned aerial vehicle according to a preset frequency to obtain real-time three-dimensional point cloud data;
3.3, determining a building area by the point cloud data collected in real time, comparing the building area with a target model of the pre-building area, judging whether the building area exceeds a closed area surrounded by the pre-building target model, if the building area exceeds the closed area of the pre-building target model, judging that illegal building or wrong building behaviors exist in the building area, and if the illegal building or wrong building behaviors exist, sending an early warning signal to monitoring personnel; if the point cloud does not exceed the closed area of the pre-built target model, the building compliance is preliminarily judged, the points in the point cloud are colored into preset colors, dynamic visual display is carried out to judge whether reasonable construction is carried out according to the preset plan, and the latest construction progress is dynamically displayed.
5. The digital country construction management and control system based on the mediated reality technology is characterized by comprising a construction area three-dimensional pre-modeling module, a point cloud data acquisition module, a superposition registration module and a three-dimensional dynamic simulation module based on the MR technology, wherein the three-dimensional pre-modeling module is used for carrying out three-dimensional pre-modeling on a target form of an area to be constructed to obtain a pre-constructed target model; the construction area point cloud data acquisition module is used for acquiring three-dimensional data of original landform and landform of a pre-construction area to obtain original point cloud data of the construction area; the superposition registration module is used for superposing the pre-built region model and the original point cloud data of the building region to obtain a three-dimensional original image of the building region; the three-dimensional dynamic simulation module based on the MR technology is used for acquiring point cloud data of a construction area in real time in the construction process, updating a three-dimensional original map of the construction area and displaying the latest state of the construction area in a real-time visual manner; in the construction process, the real-time construction state of the construction is compared with the target model of the pre-constructed area, whether illegal construction or wrong construction behaviors exist is judged, and if the illegal construction or wrong construction behaviors exist, an early warning signal is sent to monitoring personnel.
6. The digital country construction management and control system based on the mediated reality technology according to claim 5, further comprising a construction revision and decision assistance module, wherein the construction revision and decision assistance module is used for notifying a revision when a violation or wrong construction behavior exists in a construction area, visually notifying an optimal revision scheme through online editing of point cloud data in the construction area, acquiring the point cloud data in the construction area again after the revision is completed, and checking whether the requirements are met after the revision; if there is still a problem, the rectification is continued to be notified until the rectification is fully compliant.
7. The digital village construction management and control system based on the mediated reality technology according to claim 5, characterized in that the construction area point cloud data acquisition module is used for acquiring three-dimensional data of a pre-construction area, namely original point cloud data, by using an airborne laser radar; preprocessing the acquired original point cloud data, and respectively extracting ground data and non-ground data; for the area with sparse point cloud, re-collecting the point cloud data of the area; and after finishing the sorting and checking of all the data, storing the data in an LAS format for storage.
8. The digital village construction management and control system based on the mediated reality technology according to claim 5, characterized in that the three-dimensional dynamic simulation module based on the MR technology is used for periodically scanning data of the built region; an airborne laser radar carried by an unmanned aerial vehicle is adopted to periodically scan a construction area according to a preset frequency, and real-time three-dimensional point cloud data is obtained; the method comprises the steps that point cloud data collected in real time are used for determining a building area, the building area is compared with a target model of a pre-built area, whether the building area exceeds a closed area surrounded by the target model of the pre-built area or not is judged, if the building area exceeds the closed area of the target model of the pre-built area, whether illegal building or wrong building behaviors exist in the building area is judged, and if the illegal building or wrong building behaviors exist, an early warning signal is sent to monitoring personnel; if the point cloud does not exceed the closed area of the pre-built target model, the building compliance is preliminarily judged, the points in the point cloud are colored into preset colors, dynamic visual display is carried out to judge whether reasonable construction is carried out according to the preset plan, and the latest construction progress is dynamically displayed.
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| CN110398246A (en) * | 2019-07-15 | 2019-11-01 | 西安长庆科技工程有限责任公司 | The method for automatically generating line layout figure based on desert area unmanned plane image |
| CN110807571A (en) * | 2019-09-19 | 2020-02-18 | 同济大学 | Building engineering quality control system based on combination of 3d laser sensing and BIM |
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