September 2019 No.84
Japanese Infrastructure Newsletter

IDI

QUARTERLY
InfrastructureDevelopment

Institute—JAPANLaser measurement with backpack at Mt. Fuji

CONTENTS
D Mobile Mapping Technology

2IFNet Website Renewed

5

Infrastructure Development Institute – Japan (IDI)
Plaza Edogawa-bashi 3F. 1-23-6,Sekiguchi, Bunkyo-ku, Tokyo, 112-0014, JAPAN
Tel: +81-3-5227-4107 Fax: +81-3-5227-4109 E-Mail: idi17@idi.or.jp Website: http://www.idi.or.jp/english/00index.htm

D Mobile Mapping Technology-NAKANIHON SLAM QUICK SCAN

1. Introduction
Nakanihon Air Service Co., Ltd., based in

Nowadays, new measurement technologies for

Nagoya Airport Japan, has been mainlyautomatedengaged in Aerial Surveying, digital mapping,

positioning have been progressing, so we haveand GIS (Geographic Information System). We

been working on a GPS-free 3D mapping

have also experienced the 3D measurement

system using an omnidirectional laser unit andproject called LIDAR (Light Detection andSLAM technology since 2015.

Ranging)

notonlyinJapanbutdrivingsystemsandindoor

also
2．What is SLAM?

International.

Do

youknow

whatSLAMis?

SLAM(Simultaneous Localization and Mapping) is atechnology

that

simultaneouslyperforms

self-localization and environmental mapping.
The SLAM technology has also been using forautomated driving systems that we often hear
recently.
Photo1 : headquarters

Initial position

Self position
estimation fromsensor data

Shape preparation foreach measurement

Create a map（Overlapping）

Estimation ofself-position

Figure1: Description of SLAM
3．Features of NAKANIHON SLAM QUICK SCAN

2 ． Built-in 16 laser sensors, high-density

NAKANIHON SLAM QUICK SCAN features ascanning of 300,000 points / second

GPS-free 3D mapping system using Velodyne

3 ．Maximum reach 100m, ranging accuracy

Lidar'sabout 3cm

omnidirectionallaserunitand

3D-SLAM technology.

4．SLAM responds up to a maximum mounting

This mainly has the following six specifications.

angle of 45 degrees

1 ． Moving measurement that can be used

5．Measurement results with less scan-dataindoors or in forests without GPS

missing by scanning 360 degrees in all

September 2019 No.84

2directions / 30 degrees (± 15 degrees) in verticalviewing angle
6．In addition to X, Y, Z coordinate values, also
obtains reflection intensity values

5．Gain Experience in the Field:Mount Fuji
Challenge Platform

The Mount Fuji area of Fuji Hakone Izu
National Park is centered on Mt. Fuji, thehighest peak in Japan, and is characterized by
the surrounding mountains and lakes, andprimeval forests such as Aokigahara Jukai. In
particular, Mt. Fuji has many climbing users,
and there are mountain trails from the four
mountain entrances to the summit.

Photo2 : Laser unit (Velodyne)
4．Apply to-Urban environment survey: high-precision
mapping of not only streets but also structuresand interiors

Mt. Fuji summit circuit road (climbing road)has raised concerns about possible dangers
whicharelikelytooccur

duetoits

topographical characters and unpredictable
weather conditions.

-Forest survey: Detailed measurement in theforest-Archaeological survey: Detailed measurement
for archaeological prospection-Facility survey: reliable measurement even forcomplex objects, and short measurement time

Photo2 : At Mt. Fuji

For the purpose of ensuring the safety ofmountain trail users during the opening of Mt.
Fuji, we've measured the topographic point
cloud data around the mountain trail andFigure2: Case1(Facility)

created a precise 3D topographic map of themountain trail.
Through creating this topographic map, it ispossible to grasp places where rockfalls are
dangerous and extract places that are hardly towalk, which can be used for the maintenance of
mountain trails. In addition, we plan to analyze
the traffic congestion due to the recent increase

Figure3: Case2(Forest)in the number of climbing Fuji from theacquired data.

September 2019 No.84

3

6．Future development of our technology

We have been conducting boulder blasting
surveys, archaeological stone wall surveys,
undergroundfacility

measurements,

andunderground tunnel surveys so far. In thefuture,

weplantomakethe

followingdevelopments.
- Examination of change extraction method byrepeated measurement- Acquire data in real time, visualize andFigure4: Display acquired data

extract changes

See Website:
https://www.fujisanchallenge.or.jp/(Website- Data acquisition platforms such as drones andin Japanese)vehicles

https://www.youtube.com/watch?v=OpUuolnTA-9c&t=43s (Social media)

measurements for 3D tracking

DatafusionofSLAMandimage- Underwater mapping with SLAM technology
by Green-laser for bathymetry
Inquiry
Hitoshi Kitani
hkitani@nnk.co.jp
Nakanihon Air Service Co., LTD Tokyo Office Global Business Development
http://www.nnk.co.jp
104-0031 Kyobashi Square Building 7F, 3-7-5 Kyobashi Chuo-ku, Tokyo
TEL: 03-3567-6189
FAX: 03-3567-6299

September 2019 No.84

4

IFNet Website Renewed
IFNet website has just been renewed with more user-friendly design for both PCs and smartphones.

IFNet Newsletter, June 2019 Issue
IFNet website
http://www.internationalfloodnetwork.org/index.html

Flood Information:
Provides maps of major water-related
disasters and brief summary reports of

1.About IFNet
IFNet (International Flood Network) wasestablished during the 3rd World Water Forum
held in Kyoto in March 2003 for the following
purpose:-To facilitate international cooperation inflood management so as to reduce the loss oflife and damage caused by floods-To promote flood mitigation activities in theworld to lead to the safe and sustainable future
Currently 319 members from variousorganizations in 66 countries are registered.
2.Contents of IFNet Website
IFNet website is open to the public andprovides
thefollowingcontentsonwater-related disaster information around theworld.
IFNet Newsletters
Issued every two months and provides latest
water-related disaster news and conferences/forums/programs/information/surveys assisted
by IDI-Japan.

specific disasters.

Jul to Dec 2018 Map of Major Water-related
Disasters

3.Visit IFNet Website
Building disaster-resilient society is a common
purpose throughout the world. Assuming thatdisaster in other countries could occur in ourown country, the flood information by IFNet
would give you knowledge and ideas for flood
damage mitigation as well as raise awarenessof disaster prevention.
We expect more individuals and organizations
to visit our site
Please feel free to contact IFNet secretariat if you havequestions:
IFNet secretariat e-mail:info@internationalfloodnetwork.org

September 2019 No.84

5

About IDI and IDI-quarterly

Infrastructure Development Institute (IDI)-Japan is a general incorporated
association operating under the guidance of Ministry of Land, Infrastructure,
Transport and Tourism of Japanese Government.
IDI provides consulting services for mobilizing International Assistance todeveloping countries, promoting international exchange of information and humanresources, and supporting globalization of project implementation systems targeting
both developed and developing countries in the field of infrastructure.
IDI has been publishing the free quarterly journal “IDI Quarterly” since1996 for thepurpose of introducing information relating to public works and construction
technologies developed in Japan to foreign countries. We have distributed thejournal to administration officials in more than 90 countries around the world bye-mail.
It is highly appreciated if you would send us your opinions, impressions etc on thearticles.
We are also welcoming your specific requests on articles to pickup for the followingQuarterly issues.

September 2019 No.84

6