This document describes a method to intuitively recognize congestion levels in urban areas using sensor data and 3D modeling. Sensors were installed in an underground passage in Sapporo, Japan to measure pedestrian traffic over time. While the raw sensor data provides numerical insights, it can be difficult to intuitively understand congestion levels. To address this, the researchers developed a method to reproduce the stream of people using a 3D model based on the sensor measurements. This allows congestion states to be recognized visually rather than just through numbers. A demonstration video shows the 3D modeling approach in action.

1. Development of a Reproduction Method of a Stream of People
for Intuitively Recognize a State of Congestion
混雑状況を直感的に把握可能にするための人流センシング再現手法の開発
Sayoko Shimoyama, Hiroki Uematsu
WORLD DATA VIZ CHALLENGE 2018

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Congestion - one serious problem in a city

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Japanese major cities are sometimes badly congested.
This picture shows the train platform in the rush hours in Tokyo.

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can be life-threatening accident

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decreasing QOL of residents

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寿司詰め
Sushi-Zume
(n) jam-packed; packed in like sushi (like sardines)

7. How to resolve congestion?
2018/11/14 SAYOKO SHIMOYAMA, HIROKI UEMATSU
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congestion
Decentralize a stream
of people
Increase a capacity
in a place
Eliminating causes of
congestion

8. How to resolve congestion?
2018/11/14 SAYOKO SHIMOYAMA, HIROKI UEMATSU
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congestion
Decentralize a stream
of people
Increase a capacity
in a place
Eliminating causes of
congestion
Understanding of
the current
situation

9. Our solution helps
2018/11/14 SAYOKO SHIMOYAMA, HIROKI UEMATSU
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congestion
Decentralize a stream
of people
Increase a capacity
in a place
Eliminating causes of
congestion
Understanding of
the current
situation

10. Demonstration Project in the Underground
Passage in Sapporo City
passage length: 520m
The most longest under ground
passege in japan
Put sensors that were developed
by Infolounge Co., Ltd at 5 point to
measure the stream of people.
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By 663highland, CC BY 2.5
Sapporo,
Hokkaido,
Japan

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Total Count
0
0
Ultrasonic
Sensor
ceiling

12. Detect the existence of a person
by the change of the ultrasonic distance
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Total Count
0
0

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Total Count
0
0

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Total Count
1
1Detect the moving direction by
the time difference of the change
of the ultrasonic distance

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Total Count
2
1

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Total Count
2
2

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sensors
installed
on a ceiling

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number of people
who passed at a point
in underground pass
in 1 minute
majored by sensors

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from station to station sum
number of people

20. PROBLEM：It’s difficult to recognize the
state of congestion intuitively
Visualizing numerical value as a chart helps us understand the situation
But it’s difficult to know how much congestion degree is there
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？
Sushi-Zume Not Sushi-Zume

21. SOLUTION：Reproduce the stream of
people using 3D model
Reproduce the stream of
people from the numeric value
measured by sensors using 3D
model
It enables intuitively recognize
a state of congestion
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デモンストレーション
Demostración
https://youtu.be/UrThqlsh7Ug