Virtual reality urban environment design system based on AR technology

Abstract

The invention provides a virtual reality urban environment design system based on an AR technology, and relates to the technical field of urban planning design, and the system comprises a data collection module, a modeling module, a rendering module, an interaction module, a display module, a physical simulation module and a real-time updating module. The system provides a visual and immersive design environment for city planners. Through high-precision data acquisition and vivid modeling rendering, a plan can clearly observe details and overall layout of a city. And the real-time updating module ensures that the planner obtains the latest city change information and adjusts the planning scheme in time. The optimization module ensures smooth operation of the system and improves the working efficiency. The physical simulation module can predict the effects of different planning schemes under the influence of various natural and human factors, so that the schemes are optimized, the scientificity and feasibility of urban planning are improved, and planning errors and resource waste are reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of urban planning and design, and more specifically, particularly relates to a virtual reality urban environment design system based on AR technology. Background Art

[0002] In the process of urban development, the importance of urban environmental design has become increasingly prominent. Traditional urban environmental design methods have many limitations and are difficult to meet the complex needs of modern urban development.

[0003] In the past, fields such as urban planning, architectural design, and landscape design mainly relied on two-dimensional drawings, physical models, and field visits. Two-dimensional drawings are insufficient in expressing spatial relationships and details, making it difficult for designers and decision makers to fully and intuitively understand the design plan. Physical models are expensive to make, difficult to modify, and cannot dynamically display the changes of the urban environment over time and conditions. Although field visits can provide a real on-site experience, they are limited by time, space, and manpower, making it difficult to obtain comprehensive and accurate information.

[0004] In addition, communication and collaboration between different professional fields in the urban design process are often not smooth enough, and there are deviations and delays in information transmission, resulting in inefficient integration and optimization of design solutions.

[0005] In terms of public participation, traditional methods make it difficult for the public to have an in-depth and intuitive understanding of urban design plans, which limits the effective feedback and participation of public opinions, making it possible for the final design plan to fail to fully meet the needs and expectations of the public.

[0006] At the same time, with the rapid development and changes of cities, urban environment design requires more efficient, flexible and innovative methods to cope with increasingly complex design requirements and changing urban conditions. For example, when dealing with challenges such as climate change, resource shortages and sustainable development, traditional design methods are insufficient in simulating and evaluating the performance of urban environments.

[0007] In order to overcome these problems and improve the quality, efficiency and public participation of urban environment design, an innovative design system integrating advanced technologies has become an urgent need. A virtual reality urban environment design system based on AR technology has emerged, aiming to provide a more intuitive, interactive, real-time updated and multi-field information-integrated design platform to meet the new requirements of urban development. Summary of the invention

[0008] In order to solve the above technical problems, the present invention provides a virtual reality urban environment design system based on AR technology to solve the above problems.

[0009] A virtual reality city environment design system based on AR technology comprises a data acquisition module, a modeling module, a rendering module, an interaction module, a display module, a physical simulation module and a real-time update module. The data acquisition module acquires geographic information, building information and landscape information of a city. The data acquisition formula is: D=f(G, B, L), wherein D represents the acquired data, G represents the geographic information, B represents the building information and L represents the landscape information. The modeling module builds a three-dimensional model of the city according to the acquired data. The modeling module is connected to the data acquisition module through a data transmission interface to receive the data output by the acquisition module. The rendering module is connected to the modeling module through a data bus to obtain the model data output by the modeling module for rendering. The interaction module is connected to the modeling module and the rendering module through a communication protocol to pass user instructions to the modeling module and the rendering module for corresponding processing. The display module is connected to the rendering module through a display interface to receive the rendering result output by the rendering module for display. The physical simulation module is connected to the modeling module through a data interaction channel to perform physical simulation according to the model information provided by the modeling module. The real-time update module acquires the change information of the city in real time and updates the virtual city environment. The real-time update module is connected to the data acquisition module through a network to obtain the latest data and pass it to other modules for updating.

[0010] Preferably, the data acquisition module includes a satellite image acquisition unit, a field measurement unit and a network data capture unit.

[0011] Preferably, the modeling module constructs the three-dimensional model using the following formula: M=g(D,P), wherein M represents the constructed three-dimensional model, D represents the collected data, and P represents the modeling parameters.

[0012] Preferably, the rendering module includes a material rendering unit, a lighting rendering unit and a special effect rendering unit.

[0013] Preferably, the interaction module includes a gesture recognition unit, a voice recognition unit and a tactile feedback unit.

[0014] Preferably, the display module uses a head-mounted display or a projection device for display.

[0015] Preferably, the system also includes an optimization module for optimizing the performance of the system. The optimization module is connected to other modules via a system bus to obtain the operating data of each module for optimization processing.

[0016] Preferably, the optimization module includes a frame rate optimization unit, a memory management unit and a network delay optimization unit.

[0017] Preferably, the system also includes a storage module for storing collected data, constructed models and rendering results. The storage module is connected to other modules via a storage interface to receive and store data generated by each module.

[0018] Preferably, the storage module adopts a distributed storage architecture and ensures data security and integrity through a data backup and recovery mechanism.

[0019] Compared with the prior art, the present invention has the following beneficial effects: 1. This system provides an intuitive and immersive design environment for urban planners. Through high-precision data collection and realistic modeling and rendering, planners can clearly observe the details and overall layout of the city. The real-time update module ensures that planners obtain the latest information on urban changes and adjust planning plans in a timely manner. The optimization module ensures smooth system operation and improves work efficiency. The physical simulation module can predict the effects of different planning plans under the influence of various natural and human factors, thereby optimizing the plans, improving the scientificity and feasibility of urban planning, and reducing planning errors and waste of resources.

[0020] 2. For architects, this system provides a wealth of design possibilities. Architects can modify the shape, material and layout of the building model in real time in the virtual environment and intuitively feel the design effect. Gesture and voice interaction make the operation more convenient and efficient, inspiring architects' creative inspiration. The realistic light and shadow and material effects presented by the rendering module help architects better grasp the appearance and interior space atmosphere of the building. The physical simulation module can simulate the performance of the building structure under different loads to ensure the safety and stability of the building design.

[0021] 3. Landscape designers can use this system to accurately layout landscape elements such as green plants, water bodies and public facilities in virtual cities. By simulating the landscape effects under different seasons and weather conditions, designers can discover and solve potential visual and functional problems in advance. The interactive function of the system allows designers to adjust the design in real time based on user feedback to improve the ornamental and practical nature of the landscape. The geographical and architectural information obtained by the data acquisition module provides strong support for the integration of landscape design with the surrounding environment, creating a more harmonious urban landscape.

[0022] 4. The general public can experience urban planning and design schemes in person through this system, and more intuitively understand the direction and potential impact of urban development. The opinions and suggestions of the public can be fed back based on real feelings, which will increase the public's participation in urban construction. Based on the comprehensive opinions of professional designers and the public, decision-making departments can make more scientific and public-interest decisions, promote urban construction, and enhance the society's recognition and sense of belonging to urban development.

[0023] 5. In the traditional urban design process, it is often necessary to make a large number of physical models and conduct multiple field visits, which consumes a lot of time, manpower and material resources. This system reduces the dependence on physical models and reduces material and production costs. The real-time update and optimization module avoids duplication of work and waste of resources caused by inaccurate information or design adjustments. Through multiple simulations and tests in a virtual environment, problems can be discovered and solved in the design stage, reducing errors and rework in actual construction, thereby significantly saving costs and resources.

[0024] 6. This system breaks down the communication barriers between different professional fields such as urban planning, architectural design, and landscape design. Experts in various fields can communicate and collaborate in real time in the same virtual environment to discuss design solutions together. Intuitive visualization effects and real-time interactive operations help to quickly reach consensus and reduce misunderstandings and conflicts caused by misunderstandings or poor information transmission. This cross-domain and efficient collaboration can integrate the advantages of all parties, promote the smooth progress of urban design projects, and create more comprehensive and innovative design results.

[0025] 7. During the design process, the physical simulation module can simulate and analyze the city's energy consumption, traffic flow, ecological environment, etc. This helps planners and designers to develop more energy-saving, environmentally friendly and sustainable development strategies, such as optimizing building orientation to reduce energy consumption, rationally planning traffic networks to ease congestion, and increasing green space to improve ecology. By simulating and evaluating the impact of different options on urban sustainable development indicators in advance, the optimal option can be selected to promote the long-term healthy development of the city.

[0026] 8. This system is a powerful education and training tool for students and practitioners of urban design related majors. Students can practice in a virtual environment and gain a deeper understanding of the principles and methods of urban design. Teachers can improve teaching effectiveness through intuitive demonstrations and case analysis. Practitioners can accumulate experience and improve professional skills by simulating complex design scenarios. The continuous updating and improvement of the system can also keep the education and training content in line with the latest trends in industry development.

[0027] 9. When responding to natural disasters and emergencies, this system can simulate the impact of disasters on the city and help formulate emergency plans. By simulating disaster scenarios such as floods and earthquakes, the vulnerability of buildings and infrastructure can be assessed, and the layout of evacuation routes and rescue facilities can be planned in advance. In actual emergency response, based on real-time updated city information, emergency strategies can be quickly adjusted to improve the city's disaster resistance and emergency management efficiency, and protect the lives and property of citizens.

[0028] 10. For urban areas with historical and cultural value, this system can accurately restore their past appearance and evolution process. This helps to protect and inherit the city's historical and cultural heritage and enhance citizens' sense of identity and pride in local culture. In the process of urban renewal, by comparing the impact of different transformation plans on historical and cultural elements in a virtual environment, it is possible to achieve a balance between cultural protection and modern development and create an urban environment with unique cultural charm. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a system schematic diagram of the present invention. DETAILED DESCRIPTION

[0030] The following embodiments of the present invention are described in further detail in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0031] With the rapid development of augmented reality (AR) technology, its application in virtual reality urban environment design has brought new possibilities to the fields of urban planning, architectural design, landscape design, etc. The present invention provides a virtual reality urban environment design system based on AR technology, which aims to create a highly realistic, interactive and real-time updated virtual urban environment to meet the needs of different users, such as urban planners, architects, landscape designers and the general public for the exploration and design of the urban environment. The system is mainly composed of a data acquisition module, a modeling module, a rendering module, an interaction module, a display module, a physical simulation module, a real-time update module, an optimization module and a storage module. The modules work together through specific connection methods and data transmission protocols to realize the overall function of the system.

[0032] In the data acquisition module, the satellite image acquisition unit uses high-resolution satellites to obtain large-scale geographic images of the city and extract macro information such as terrain, landforms, and building distribution. The field measurement unit uses total stations, laser rangefinders and other equipment to accurately measure specific areas and obtain detailed size, material and other information of buildings. The network data capture unit collects public data related to the city from the Internet, such as urban planning documents, architectural drawings, etc. The data acquisition formula is: D=f(G,B,L), where G represents geographic information collected through satellite images, including terrain, landforms, etc.; B represents building information obtained through field measurements, such as building height, structure, etc.; L represents landscape information captured through the network, such as the layout of parks and green belts.

[0033] In the modeling module, a 3D modeling software is used to build a 3D model of the city based on the data obtained by the data acquisition module. During the modeling process, the geometric shape, texture, material and other details of the building are considered. The modeling formula is: M=g(D,P), where D is the data output by the data acquisition module and P is the parameter in the modeling process, such as the accuracy and complexity of the model.

[0034] In the rendering module, the material rendering unit gives the model realistic material effects, such as masonry, glass, wood, etc. The lighting rendering unit simulates the lighting effects under different time and weather conditions, including sunlight, shadows, etc. The special effects rendering unit adds special effects such as fog and water flow to enhance the realism of the environment. In the interactive module, the gesture recognition unit captures the user's gestures through the camera to realize operations on the virtual environment, such as rotation, scaling, and movement. The voice recognition unit recognizes the user's voice commands and performs corresponding operations. The tactile feedback unit provides tactile feedback to the user to enhance the sense of immersion. In the display module, a head-mounted display (such as HTC Vive, Oculus Rift, etc.) or a projection device (such as an immersive projection system) is used to display the virtual city environment to the user; In the physical simulation module, physical phenomena in the city are simulated, such as the effects of gravity and wind on objects, and the response of buildings to earthquakes, etc.; The real-time update module obtains real-time information about city changes, such as new buildings and road reconstruction, by connecting to the database of the city management department or using the sensor network, and updates the virtual city environment in a timely manner; In the optimization module, the frame rate optimization unit improves the frame rate by adjusting graphics rendering parameters and reducing the number of model faces to ensure a smooth visual experience. The memory management unit allocates and releases memory reasonably to avoid memory leaks and freezes. The network delay optimization unit optimizes the data transmission protocol to reduce the impact of network delay on interaction. The optimization formula is: O=h(S,R), where S represents the current state parameters of the system, such as frame rate, memory usage, etc.; R represents optimization rules and strategies. The storage module adopts a distributed storage architecture to store the collected data, constructed models, rendering results, etc. At the same time, the security and integrity of the data are guaranteed through data backup and recovery mechanisms.

[0035] System workflow: The satellite image acquisition unit obtains high-resolution satellite images through the interface with the satellite data provider, and obtains the macro-geographic information of the city through image preprocessing and feature extraction. The staff of the field measurement unit carries the measurement equipment to the designated location for measurement, transmits the measurement data back to the system in real time, and performs data sorting and calibration. The network data capture unit uses network crawler technology to capture urban planning documents, architectural drawings and other data from relevant websites, and performs data cleaning and conversion; The modeling module receives the data output by the data acquisition module and uses 3D modeling software (such as 3dsMax, Maya, etc.) to create a basic three-dimensional model of the city according to the modeling formula and preset modeling parameters. During the modeling process, buildings, roads, landscapes and other elements are modeled in detail to ensure the accuracy and authenticity of the model; The rendering module obtains the 3D model output by the modeling module, and processes the model through the material rendering unit, lighting rendering unit and special effect rendering unit respectively. The material rendering unit gives realistic materials to the surface of the model, such as the texture of bricks and stones, the luster of metal, etc., which is achieved through the material library and material mapping technology. The lighting rendering unit calculates the lighting effect on the surface of the model according to the set time, weather conditions and light source position, generates shadows and highlights, and uses ray tracing or radiosity algorithms to achieve real lighting simulation. The special effect rendering unit adds special effects such as fog, water flow, fireworks, etc. to enhance the realism and dynamic effects of the environment, which is achieved through particle systems and fluid simulation technology; The gesture recognition unit captures the user's gestures through a depth camera or sensor, converts them into commands that the system can recognize, and implements operations on the virtual environment, such as rotation, scaling, and translation. The voice recognition unit receives the user's voice input, converts it into text commands through the voice recognition engine, and performs corresponding operations, such as switching scenes, querying information, etc. The tactile feedback unit provides tactile feedback to the user through tactile devices (such as handles, gloves, etc.), such as generating a sense of resistance when touching a virtual object, to enhance the sense of immersion; The display module displays the rendered virtual city environment to the user through a head-mounted display or projection device. The head-mounted display provides an immersive experience, making the user feel as if they are in a virtual city; the projection device is suitable for scenes shared by multiple people, such as conference rooms, exhibition halls, etc. The physical simulation module calculates the physical effects in real time based on the structural information of buildings and objects provided by the modeling module and the user's interactive operations. For example, when a user pushes an object, it simulates the effects of gravity, friction, and inertia; when simulating natural disaster scenarios, it calculates the forces and deformations of buildings; The real-time update module regularly obtains the latest changes in the city, such as new buildings, road reconstruction, landscape changes, etc., through the database interface or sensor network of the city management department. These change data are compared and integrated with the original model to update the virtual city environment and ensure that it keeps pace with the real city; The optimization module monitors the system's performance parameters in real time during system operation, such as frame rate, memory usage, network latency, etc. According to the optimization formula and preset optimization rules, take corresponding optimization measures, such as adjusting rendering parameters, releasing unnecessary memory, optimizing network transmission, etc., to ensure stable system operation and good user experience; The storage module stores collected data, intermediate data in the modeling process, rendering results, user interaction data, etc. in a classified manner. The distributed storage architecture ensures high reliability and scalability of data, and the data backup and recovery mechanism ensures that data can be quickly restored in the event of system failure or data loss, ensuring data security and integrity.

[0036] The virtual reality urban environment design system based on AR technology of the present invention realizes a virtual urban environment design platform with powerful functions, superior performance and good user experience by integrating multiple modules such as data acquisition, modeling, rendering, interaction, display, physical simulation, real-time update, optimization and storage. Through actual experimental verification, it is proved that the system has broad application prospects and practical value in the fields of urban planning, architectural design, landscape design, etc. In the future, with the continuous advancement of technology and the continuous changes in user needs, we will continue to improve and perfect the system to bring more innovation and development to the urban environment design industry.

[0037] The embodiments of the present invention are given for the purpose of illustration and description, and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A virtual reality urban environment design system based on AR technology, characterized in that: It includes data acquisition module, modeling module, rendering module, interaction module, display module, physical simulation module and real-time update module; The data collection module collects the city's geographic information, building information and landscape information, and its data collection formula is: D=f(G,B,L), where D represents the collected data, G represents the geographic information, B represents the building information, and L represents the landscape information; The modeling module builds a three-dimensional model of the city based on the collected data. The modeling module is connected to the data collection module through a data transmission interface to receive the data output by the collection module. The rendering module is connected to the modeling module through a data bus, and obtains the model data output by the modeling module for rendering; The interactive module is connected with the modeling module and the rendering module through a communication protocol, and transmits the user instructions to the modeling module and the rendering module for corresponding processing; The display module is connected to the rendering module via a display interface, and receives the rendering result output by the rendering module for display; The physical simulation module is connected to the modeling module through a data interaction channel, and performs physical simulation according to the model information provided by the modeling module; The real-time update module obtains the city's change information in real time and updates the virtual city environment. The real-time update module is connected to the data acquisition module through the network to obtain the latest data and pass it to other modules for updating.

2. A virtual reality urban environment design system based on AR technology as claimed in claim 1, characterized in that: The data acquisition module includes a satellite image acquisition unit, a field measurement unit and a network data capture unit.

3. A virtual reality urban environment design system based on AR technology as claimed in claim 1, characterized in that: The modeling module constructs a three-dimensional model using the following formula: M=g(D,P), where M represents the constructed three-dimensional model, D represents the collected data, and P represents the modeling parameters.

4. A virtual reality urban environment design system based on AR technology as claimed in claim 1, characterized in that: The rendering module includes a material rendering unit, a lighting rendering unit and a special effect rendering unit.

5. A virtual reality urban environment design system based on AR technology as claimed in claim 1, characterized in that: The interaction module includes a gesture recognition unit, a voice recognition unit and a tactile feedback unit.

6. A virtual reality urban environment design system based on AR technology as claimed in claim 1, characterized in that: The display module uses a head mounted display or a projection device for display.

7. A virtual reality urban environment design system based on AR technology as claimed in claim 1, characterized in that: The system also includes an optimization module for optimizing the performance of the system. The optimization module is connected to other modules via a system bus to obtain the operating data of each module for optimization processing.

8. A virtual reality urban environment design system based on AR technology as claimed in claim 1, characterized in that: The optimization module includes a frame rate optimization unit, a memory management unit and a network delay optimization unit.

9. A virtual reality urban environment design system based on AR technology as claimed in claim 1, characterized in that: The system also includes a storage module for storing collected data, constructed models and rendering results. The storage module is connected to other modules through a storage interface to receive and store data generated by each module.

10. A virtual reality urban environment design system based on AR technology as claimed in claim 1, characterized in that: The storage module adopts a distributed storage architecture and ensures the security and integrity of data through a data backup and recovery mechanism.

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