– Realized in 3D across the city, combined with information and simulated'Smart Administrative Innovation Model' 4.1 full-scale operation
– AI analysis of 2 aerial photographs and establishment of an international standard index system… Proposed national standard leading model
– This year's 7 committees use it to make decisions on public building design competitions, and deliberate objectivity and science↑
– Deriving urban wind roads and utilizing them for urban planning, prevention of forest fire spread, and reduction of fine dust and heat islands
– Non-face-to-face 600D tour of tourist attractions and 3 kinds of cultural properties… Traveling to Hanyang in the 1900s on a time machine

□ The city of Seoul implemented S-Map (605.23D map), a twin city that replicated the entire Seoul area of ​​3㎢ in 3D in cyberspace. It also revealed that it has built a smart administrative innovation model called “Digital Twin Seoul S-Map,” which can solve various urban problems through simulation by combining information such as administration and environment in this virtual space. Full-scale operation starts from 4.1.

□ Although there were 3D maps in the past, it is the first in Korea to build a digital twin capable of analyzing and simulating urban problems for the entire city. It is difficult to find a case in overseas cities.
○ Digital Twin is a technology that makes objects (twins) identical to real objects in a virtual space and verifies them through various simulation tests (simulations).
○ The United States, the United Kingdom, and Singapore have established digital twin environments that are similar to reality and are being used for policies such as facility management, traffic accident prevention, and disaster response. City) and Jeonju (some areas) are conducting various experiments on a small scale, but there has been no case of building a digital twin for the entire city.

□ The city uses S-Map to make decisions on seven committees including the Urban Planning and Traffic Impact Assessment Committee this year to enhance the objectivity and scientificity of deliberation. S-Map will be fully utilized from this year in the entire process of the city public building design contest. The actual simulation of submitted works and screening. In the event of a fire, it intuitively checks the place of occurrence in 7D and responds by predicting the spread.

□ Information on urban wind roads across Seoul is also derived from S-Map and used to solve various urban problems. The wind path, strength and direction according to the topography, and the influence of topographic features are checked in 3D space and reflected in the building layout of the city plan. By simulating the predicted wind road based on the information from the Korea Meteorological Administration, it is also used to prevent the spread of forest fires and reduce fine dust and heat island phenomena.

□ Citizen services through S-Map will also be strengthened. Pinkfong, Seoul's public relations ambassador, will start a non-face-to-face tour service within this year that explains major tourist attractions along with VR videos. In addition, 600 kinds of cultural properties can be viewed in 3D within this year, and the appearance of Hanyang on an old map of the 1900s is also reproduced in 3D. Experience Hanyang at the beginning of the 20th century on a time machine called S-Map. S-Map also provides street views of more than 1 items such as traditional markets and narrow alleys that are not provided by private portals. A plan to lead to vitalization of the local economy.

□ In the era of coronavirus, while non-face-to-face administrative and civil services are expanding, the Seoul Metropolitan Government is capable of solving problems in large cities such as environmental disasters and traffic caused by multiple causes through three-dimensional and integrated analysis simulation using ``Digital Twin Seoul S-Map''. It announced that it will strengthen the service and expand citizen services.
○ S-Map is one of the core infrastructure smart Seoul platform (6S) for Seoul to develop into a smart city, and is being promoted in accordance with the “Virtual Seoul (S-Map) Comprehensive Plan” ('20.6.).

□ Seoul City has been leading the Korean version of digital twins from the start of the digital twin project in '18 to the present stage where urban analysis and simulation are possible. After '3, the goal is to advance to the stage where city control is possible, such as autonomous driving and earthquake prediction.
○ Project 1st stage ('19, physical environment replication): A 3D virtual environment called “Virtual Seoul Platform” was established for the entire Seoul area to create a digital twin environment for analysis and simulation in a three-dimensional environment.
○ Project 2nd Stage ('20, Urban Geospatial Information Collection and Visualization): The first local government to adopt aerial lidar shooting technology capable of taking multi-directional oblique photographs, constructing high-quality 3D spatial information in the international standard City GML format. .
□ Through a two-year production process, the city of Seoul integrated the ground, underground, and indoor spatial information into S-Map, realizing not only the topography of Seoul, but also about 2 buildings and facilities in 60D. Public buildings, subway stations, and indoor maps that could not be seen on existing three-dimensional maps can be disclosed, and real estate information such as publicly announced land prices and real-time CCTV traffic information can be checked with just a click.
○ 13 indoor geospatial information, which has been leading since 552, 6 underground facilities such as water and sewage, communication, electricity, geotechnical information, and 36 kinds of spatial information such as land and buildings, traffic information, traffic volume, and accidents. It is used as analysis-based data by linking 2D-based spatial information such as information.

<Status of 3D S-Map Construction>
○ [Ground] 60 buildings, facilities (bridge, overpass, overpass, etc.), topographic information (605.23㎢)
○ [Underground] 6 types of underground facilities (water and sewage, gas, electricity, communication, heating)
○ [Indoor] Public buildings, subway stations, firefighting IoT facilities, etc. (552 locations)
○ [Ground] Geological map, contour line, estimated cross-sectional view, survey point

□ In particular, through cooperation with the private sector and the public, a three-dimensional virtual environment was efficiently built at low cost. In the case of outdoors, it was the first local government to introduce aerial lidar shooting technology that can take multi-directional oblique photography, and it was born as a new technology that shoots 3 aerial photographs across Seoul and automatically analyzes it with AI. In addition, the accuracy was improved by manually supplementing it with a drone shot image. The initial cost was also reduced by KRW 2 billion, and maintenance costs are expected to be further reduced after that.
○ The city previously signed a business agreement with Naver Labs, a private company that possesses new technology for building 18D DB automation to build a 3D virtual environment in 3. Writing the entire Seoul area by hand would cost 121 billion won (as of 13), but Naver Labs invested about 28 billion won in advance and provided DB with automation construction technology, reducing the initial construction cost by about 149 billion won. The effect of further savings was achieved.
○ In addition, through cooperation with various organizations, the cost of DB construction is minimized to reduce the budget and establish a system for sharing spatial information. Through business collaboration, 1,800D information from the central government, such as 3 restored and reproduced 3D cultural assets of the Cultural Heritage Administration, climate information from the Korea Meteorological Administration in the metropolitan area, and various 3D spatial information constructed by related organizations under the Seoul Metropolitan Government are jointly used through business cooperation. .

□ In particular, we built an index system that assigns unique IDs to all DBs such as buildings and facilities implemented in 3D in the international standard City GML format. It has established a sustainable update system by enhancing compatibility with various data.
○ The Seoul index system considers the management of 3D models of transportation facilities (bridges, overpasses, overpasses, etc.), creating an analysis environment that guarantees accuracy due to high linkage with national spatial information such as integrated building information, statistical information, and road name and address. It is expected to be. The city plans to discuss with the Ministry of Land, Infrastructure, and Transport so that it can become a national standard in the future as a leading model for 3D DB construction.
○ CityGML (City Geographic Markup Language): An open data model that stores 3D spatial information, established by the International Organization for Standardization as a standard model for digital 3D data exchange.

□ While the government presented digital twins as one of the top 10 Korean New Deal projects, it is evaluated that the Seoul Metropolitan Government presented a leading model as a national standard from the introduction of new technology to the management system.

□ There are three main ways to use Seoul's “Digital Twin Seoul S-Map”: ① solving urban problems through various analysis models ② expanding cultural tourism non-face-to-face services ③ opening to private use.

□ First, an analysis model for each field was developed to solve urban problems such as support for urban planning decision-making, real-time fire monitoring for fire prediction, and realization of urban wind roads. In the future, we plan to continue to develop additional analytical models.
○ Committee decision-making such as urban development: S-Map plays a key role from the presentation of deliberation agendas related to urban development to decision-making and management. Previously, it was dependent on human judgment or data, but now it is possible to conduct in-depth deliberation by quantitatively analyzing the right of view, amount of sunlight, and skyline by placing a bird’s-eye view model of the development site in a 3D virtual space identical to the real world. In June of last year, it was introduced to four deliberation committees, including the Urban Planning Committee and the Joint Committee on Urban Architecture, and this year, it will be expanded and introduced to seven committees by adding the 'Traffic Impact Assessment Committee' to determine the cause of traffic obstacles.
○ Public building design contest evaluation: From this year, S-Map will be fully introduced for public building design contest evaluation. Beyond the evaluation based on the documents or data submitted by the proposer, it is possible to evaluate while realizing the actual building according to the design plan in a virtual space. S-Map is used from registration of contest agenda to the entire process of evaluation and screening, as well as collecting civic opinions on contested works and opening of winning works.
○ Fire-fighting IoT sensor technology: Introduces'fire-fighting IoT facility monitoring technology' to S-Map, which allows you to check whether the fire-fighting sensor is activated or not with a 3D map without going to the site. It is to apply the technology derived by the Korea Electronics and Telecommunications Research Institute through the national R&D project to the actual site. In the event of a fire, it is possible to intuitively check the detailed information of the building and the exact fire location in advance by combining it with the'real-time IoT fire management system' and the'fire safety map'. It is a smart safety model that can quickly and scientifically respond to fires without going to the field.

□ Develop an'urban climate analysis model' using the wind road. First of all, as a first step, the topographic information of Seoul was substituted into the wind road model (KLam_21) developed by the German Korea Meteorological Administration, and the wind road information of Seoul was derived in real time. Currently, it is in the verification stage of information, and a specific application model is planned to be developed by '23.

□ For example, it is a model for improving urban environmental problems such as urban planning, prevention of forest fire spread, and reduction of fine dust and heat islands by grasping the wind path, strength and direction according to the topography of Seoul.
○ Analysis of wind road impact according to building layout: When building a new building such as a large complex or high-rise building, analyze the effect of wind flow by arranging the building so that the wind does not stay in the virtual space. Based on this, we create a pleasant urban environment.
○ Forest fire spread prevention model: In cooperation with the Korea Forest Service, the wind direction is predicted in advance when a forest fire occurs, and a model that can be used for forest fire spread countermeasures is created.
○ Measures to reduce fine dust and heat island phenomena: Use them as visual analysis data to prepare countermeasures such as wind forest road construction projects to find spaces where wind stays in the city center and alleviate fine dust or heat island phenomena.

□ Second, with the completion of the digital twin of S-Map, it has become possible to experience and analyze various 3D contents, and to participate in citizens, going beyond the existing stereoscopic images and basic information. The city is pushing for citizens to enjoy all services in the mobile web environment from September.

□ We plan to expand the non-face-to-face citizen experience service that combines major tourist attractions and cultural property contents through collaboration with the Cultural Heritage Administration, which has S-Map and 3D spatial information, and the Seoul Tourism Foundation. It plans to provide a variety of contents, such as a LAN trip project that reproduces the game.
○ Non-face-to-face tourism tour service: The'Non-face-to-face tourism tour service' will be launched within this year in which the Seoul public relations ambassador'Pink Pong' provides commentary on cultural heritage at each hot spot along with VR video. As the demand for non-face-to-face services increased as a result of the coronavirus, the intention is that citizens as well as foreign tourists can take off their masks in a virtual space and enjoy various places in Seoul.
○ Reproduction of cultural assets in Hanyang City and the appearance of Hanyang in 1900: 3 kinds of cultural assets such as Namdaemun and Sungnyemun in Hanyang City, which were reproduced in 600D by the Cultural Heritage Administration, were lightened (initiated from 20) to create the appearance of Hanyang on the old map of the 1900s. Reproduce in 3D. In collaboration with the Cultural Heritage Administration, citizens can access the S-Map to promote a project where they can experience the appearance of Hanyang in the 1900s in 3D. The service will be provided from October, and the service will be expanded by receiving a total of 24 additional cultural properties for each stage until '1,800.
○ Provide 1 street views that are not on private maps such as traditional markets and alleys: 4 items that cannot be found on private portals, 1 km, such as narrow alleys, terraced roads, traditional markets, and alleyways that require CCTV supplementation. It provides a street view of. Excavated with the borough. The goal is to increase the accessibility of the pedestrians and the vitality of the local economy and community by linking the streets photographed with VR with the street view of the existing private portal company, and to provide safety information to citizens. In '4 New Deal Job Project, about 586 autonomous districts were built, and this year, all regions are planned to be completed by the year '19.
○ Citizen Participation 3D Virtual Construction Experience Service: 3 types of 30D libraries (over 270) that allow any citizen to create a 3D city model within the S-Map will be built. It is an urban playground where you can look up at my buildings and do landscapes in a virtual space.

□ Third, open it for private use. Utilizing S-Map data, a test bed (showcase) environment is built in which startups and external experts can develop and promote various services. It is planned to build and provide an experimental space (open lab) within this year.
○ Seoul City plans to build and provide an experimental space (open lab) this year where industry, academia, and research experts can develop and experiment with various analysis functions using 3D models based on a digital twin. The new technology demonstrated here will be connected to citizen services through S-Map again, and it is expected that the effect of a virtuous cycle between the public and private sectors such as technology development of startups will be expanded.
○ In addition, we move forward with a service that shares data with citizens. We plan to develop and provide open API to support application system development based on S-Map so that anyone can use it easily. Through this, any citizen can use S-Map as a basic map, can use various spatial information services and contents, and users can create map services autonomously and creatively.

□ Won-mok Lee, Seoul Smart City Policy Officer said, “The S-Map platform that can link various information in the real world and enables simulation and spatial analysis has been completed to play a pivotal role in realizing a smart city, and by opening S-Map-related data to the private sector. It is expected to be of great help to the development of industries related to various additional services.”

High-quality map of major tourist attractions <Cheonggyecheon>

Wind road simulation by vertical altitude <Yeouido area>

☞ Go to original text