UN Smart Maps/Pacific is held on 18th August 2023.
I introduced "Virtual Shizuoka", which is 3D point cloud data compiled by Shizuoka prefecture, and its use cases. I also introduce its challenge and future vision.
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UNSmartMapMeetUp2023Aug18.pptx
2. Who is Kazuya Sato?
Shizuoka prefectural government officer
Disaster Management & Emergency Operation
3. Who is Kazuya Sato?
Physical Geographer, researched disaster risk
International Tsunami Information Center intern
Using Geospatial Information System
Shizuoka prefectural government officer
Disaster Management & Emergency Operation
4. Location
Location
The prefecture faces the Pacific Ocean in central Honshu, and is blessed with a warm climate and rich natural
surroundings. Bordering Kanagawa prefecture with Mt. Hakone in the east, Aichi prefecture with Lake
Hamana in the west, and connecting with Yamanashi and Nagano prefectures with Mt. Fuji and the southern
Alps in the North. Running 155 km east to west and 118 km north to south, the prefecture has a total area of
7,780 km2 over 23 cities and 12 towns, and has a population of about 3.7 million people.
Shizuoka Prefecture Location
Tokyo
5. Taking and publishing 1/1 point cloud data
in order to use ICT to improve productivity in the construction industry
VIRTUAL SHIZUOKA Project
Transportation Infrastructure
Department of Shizuoka Prefecture
7. Previously ICT construction
i-Construction changes construction processes
Decisions are made based only on the work
history of the ICT construction machine
Measurement using a level and total station (TS)
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Water
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9. Point cloud data: A large group of points having X, Y, and Z position information measured using a laser scanner, etc.
Point cloud data of VIRTUAL SHIZUOKA
11. Measurement
method
Laser Profiler (LP) Airborne Laser Bathymetry (ALB) Mobile Mapping System (MMS)
Items measured
Ground surface, trees, buildings,
etc.
Coast and underwater topography Roads and surrounding natural
features
Measurement
density
16 points or more per square
meter
1 point or more per square
meter
400 points or more per square
meter
High density data is acquired over a large area
to create a VIRTUAL SHIZUOKA
12. Original data (DSM)
Ground data (DTM)
Characteristics of airborne laser surveying (LP: Laser Profiler)
Original data (DSM)
Ground data (DTM)
Digital Terran Model
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15. Quantitatively grasping the disaster situation
Grasping damage based on comparison with previous data
Investigation of buildings
along the road
Automated driving
Forest management
Cultural properties protection
Travel
Survey/design ICT construction Efficient maintenance management
Using 3D data in all infrastructure processes
Consideration of landscape
Support for consensus building/
decision making Application for simulation
VIRTUAL SHIZUOKA Project
Digital Twin created by point cloud data
20. Underwater lava topography seen in ALB data:
Futo Coast
LP data (2019) only
Superimposed with a city planning map of Ito City
21. Underwater lava topography seen in ALB data: Futo
Coast
LP+ALB (2019)
Superimposed with a city planning map of Ito City
Only the underwater
topography is colored.
Measured to almost 20 m
deep.
You can see an open
crack in the lava lobe
extending into the ocean.
Amazing!
Boulders that fell due to erosion by
waves are also visible.
30. Creating a dynamic map
Using point cloud data from MMS
Demonstration (Confirmation of the usefulness and social
receptivity of autonomous cruising)
Shizuoka Auto Driving ShowCASE Project
37. (2021: UAV acquired after disaster) over 120 pts/sq m
Open data
(CC-BY4.0)
Open data
(CC-BY4.0)
(2019: VIRTUAL SHIZUOKA) 16 pts/sq. m
Extraction of topographical differences based on a comparison of point cloud data
38. Red Relief Image Map
(2019: VIRTUAL SHIZUOKA) 16 pts/sq. m (50 cm DEM)
39. Red Relief Image Map
(2021: UAV acquired after disaster) 120 pts/sq m (10 cm DEM)
40. After landslide (UAV acquired)
Before landslide (Virtual Shizuoka)
3D volume calculation
41. A
B
The area enclosed in a purple dotted line is estimated to be part of the remaining
embankment.
A: Area where a change in the condition can currently be observed
B: Area where a change in the condition is not observed
Estimated remaining embankment in area A: Approx. 9,400?
Estimated remaining embankment in areas A and B: Approx. 20,000?
Image of topographical differences based on point cloud data
42. Embankment
that didn¡¯t
collapse A
Extensometer
An extensometer was installed in the remaining embankment as it is considered to be unstable.
¡úA warning will be sent via area mail if the threshold is exceeded.
43. Features and Challenges
Most of use cases are for ¡°visualization¡±
How to improve ¡°Analysis¡± cases
Participants have special skills and high spec equipment
Data are huge
How to make point cloud data dealing friendly
Development of data processing or software is required
45. We¡¯re opening magnificent experiment field
Data are huge
Policy: Administration should open as well as they have(DFFT)
NOT considering how to flow (nongovernment field)
Technology update
Knowing what can do, how can do, what is needed¡
More participants Increase use cases including Analysis
46. Goal: Development of standard
~Emergency Response on which the sun never sets~
Japan
Europe
U.S.A
47. Goal: Development of standard
~Emergency Response on which the sun never sets~
Japan
Europe
U.S.A