HoloLab Supports Utilization of "3D City Models" with XR Digital Twin "torinome" in Fujisawa City
HoloLab supported Fujisawa City's promotion of cross-sectional utilization of 3D city models with its self-developed XR digital twin platform "torinome." By enabling intuitive handling of 3D data without specialized knowledge, "torinome" facilitated concrete dialogue and promoted utilization among administrative staff, neighboring municipalities, and citizens, connecting 3D city models to their work and daily lives.
📋 Article Processing Timeline
- 📰 Published: April 28, 2026 at 21:00
- 🔍 Collected: April 28, 2026 at 12:31
- 🤖 AI Analyzed: April 28, 2026 at 12:58 (26 min after Collected)
HoloLab Inc. (Headquarters: Shinagawa-ku, Tokyo; CEO: Kaoru Nakamura; hereinafter "HoloLab") participated as a cooperating company for AeroToyota Inc. (hereinafter "AeroToyota"), the development contractor for the "FY2025 Fujisawa City Urban Space Information Digital Infrastructure Construction and Other Services" project conducted by Fujisawa City, Kanagawa Prefecture. HoloLab provided utilization support and technical cooperation using its self-developed XR digital twin multi-platform "torinome," in conjunction with the 3D city models developed by AeroToyota.
■ Background: "See and Touch Experience" Accelerates Cross-Sectional Utilization of 3D City Models
Fujisawa City participates in Project PLATEAU (Ministry of Land, Infrastructure, Transport and Tourism) and aims for "cross-sectional utilization" of 3D city models, not only in urban planning and disaster prevention but also across all departments within the city hall.
However, precisely because it is an advanced initiative, it has been difficult to convey the image of its utilization, tending to remain limited to specialized purposes for which it was developed, posing a challenge to its expansion into other fields.
■ "torinome" Achievements Supporting "Dialogue Time" Regarding 3D City Models
To address these challenges, HoloLab utilized "torinome," an XR digital twin platform that allows intuitive handling of 3D data via web browsers and AR without requiring specialized knowledge such as GIS. This visualized the results of PLATEAU use cases and 3D city model data, thereby realizing a "see and touch experience" through XR technology. This created an environment where users could find "points of contact between 3D city models and their own work and daily lives," fostering concrete and tangible "dialogue time."
Furthermore, Fujisawa City used "torinome" to present data utilization methods tailored to the perspectives of various stakeholders, including administrative staff, neighboring municipalities, and citizens. By providing opportunities to concretely experience "what 3D city models are" and "how they can be used," HoloLab supported the creation of opportunities to promote cross-sectional utilization beyond organizational and sectoral boundaries.
【Within City Hall】Support for discussions connecting practical issues and data
In a study session for Fujisawa City officials, 9 PLATEAU use case results were displayed on "torinome Base," a 3D map operable on a web browser, and participants actually operated and experienced them.
Utilization discussions were conducted on themes relevant to each department's practical work, such as infrastructure management by civil engineering technicians and citizen dialogue by urban development departments. By concretizing how on-site issues could be solved with 3D city models, awareness and understanding were promoted within the city hall.
Scene from the city hall study session / PLATEAU Use Case uc23-02 Precise sediment disaster simulation
【Wider Area】Cooperation in opportunities to learn from 3D city model development to utilization
At a council meeting attended by practical staff from neighboring municipalities, methods for developing 3D city models and examples of their utilization were introduced from the perspectives of both ordering parties and contractors. HoloLab also presented an example of "Citizen-Participatory XR Urban Development Workshop" as a case of utilizing 3D city models in dialogue with citizens.
In the subsequent experience session, each contractor showcased their exhibits. HoloLab overlaid and visualized open data such as tsunami inundation assumptions, fire spread simulations, and evacuation shelter location information on "torinome" using 3D city models of Fujisawa City and surrounding open data cities.
Opportunities were provided to concretely experience the disaster prevention application of 3D city models, such as checking how many floors of a building would be inundated by comparing 3D city models with tsunami inundation depth assumptions, and reproducing the spread of fire over time on a digital twin.
In addition, a demo of the same workshop, linking digital twin data with AR, was conducted, demonstrating the usefulness of digital twins in urban planning by displaying 3D city models and other data in real space and on maps.
Scene from the workshop experience / Overlay of 3D city models (buildings) with tsunami inundation assumptions and designated emergency evacuation sites/designated evacuation site locations (open data)
"Citizen-Participatory XR Urban Development Workshop":
Initiative in "Citizen-Participatory Urban Development Utilizing XR Technology" by the Ministry of Land, Infrastructure, Transport and Tourism for FY2022-2024 (https://www.mlit.go.jp/plateau/use-case/uc23-08/)
【Citizens】Utilization in exhibitions and experiences to envision future urban development
On March 23, 2026, the "Symposium on Urban Master Plan Revision" and "Digital Twin Experience Session" hosted by Fujisawa City were held. In the experience session, "torinome" was used to convert the 3D city model of the Fujisawa Station area developed by AeroToyota and the separately created 3D city models of the Enoshima/Katase-Enoshima Station area into Minecraft format data.
■ Background: "See and Touch Experience" Accelerates Cross-Sectional Utilization of 3D City Models
Fujisawa City participates in Project PLATEAU (Ministry of Land, Infrastructure, Transport and Tourism) and aims for "cross-sectional utilization" of 3D city models, not only in urban planning and disaster prevention but also across all departments within the city hall.
However, precisely because it is an advanced initiative, it has been difficult to convey the image of its utilization, tending to remain limited to specialized purposes for which it was developed, posing a challenge to its expansion into other fields.
■ "torinome" Achievements Supporting "Dialogue Time" Regarding 3D City Models
To address these challenges, HoloLab utilized "torinome," an XR digital twin platform that allows intuitive handling of 3D data via web browsers and AR without requiring specialized knowledge such as GIS. This visualized the results of PLATEAU use cases and 3D city model data, thereby realizing a "see and touch experience" through XR technology. This created an environment where users could find "points of contact between 3D city models and their own work and daily lives," fostering concrete and tangible "dialogue time."
Furthermore, Fujisawa City used "torinome" to present data utilization methods tailored to the perspectives of various stakeholders, including administrative staff, neighboring municipalities, and citizens. By providing opportunities to concretely experience "what 3D city models are" and "how they can be used," HoloLab supported the creation of opportunities to promote cross-sectional utilization beyond organizational and sectoral boundaries.
【Within City Hall】Support for discussions connecting practical issues and data
In a study session for Fujisawa City officials, 9 PLATEAU use case results were displayed on "torinome Base," a 3D map operable on a web browser, and participants actually operated and experienced them.
Utilization discussions were conducted on themes relevant to each department's practical work, such as infrastructure management by civil engineering technicians and citizen dialogue by urban development departments. By concretizing how on-site issues could be solved with 3D city models, awareness and understanding were promoted within the city hall.
Scene from the city hall study session / PLATEAU Use Case uc23-02 Precise sediment disaster simulation
【Wider Area】Cooperation in opportunities to learn from 3D city model development to utilization
At a council meeting attended by practical staff from neighboring municipalities, methods for developing 3D city models and examples of their utilization were introduced from the perspectives of both ordering parties and contractors. HoloLab also presented an example of "Citizen-Participatory XR Urban Development Workshop" as a case of utilizing 3D city models in dialogue with citizens.
In the subsequent experience session, each contractor showcased their exhibits. HoloLab overlaid and visualized open data such as tsunami inundation assumptions, fire spread simulations, and evacuation shelter location information on "torinome" using 3D city models of Fujisawa City and surrounding open data cities.
Opportunities were provided to concretely experience the disaster prevention application of 3D city models, such as checking how many floors of a building would be inundated by comparing 3D city models with tsunami inundation depth assumptions, and reproducing the spread of fire over time on a digital twin.
In addition, a demo of the same workshop, linking digital twin data with AR, was conducted, demonstrating the usefulness of digital twins in urban planning by displaying 3D city models and other data in real space and on maps.
Scene from the workshop experience / Overlay of 3D city models (buildings) with tsunami inundation assumptions and designated emergency evacuation sites/designated evacuation site locations (open data)
"Citizen-Participatory XR Urban Development Workshop":
Initiative in "Citizen-Participatory Urban Development Utilizing XR Technology" by the Ministry of Land, Infrastructure, Transport and Tourism for FY2022-2024 (https://www.mlit.go.jp/plateau/use-case/uc23-08/)
【Citizens】Utilization in exhibitions and experiences to envision future urban development
On March 23, 2026, the "Symposium on Urban Master Plan Revision" and "Digital Twin Experience Session" hosted by Fujisawa City were held. In the experience session, "torinome" was used to convert the 3D city model of the Fujisawa Station area developed by AeroToyota and the separately created 3D city models of the Enoshima/Katase-Enoshima Station area into Minecraft format data.