Remote sensing of environment and disaster laboratory

Institute of Industrial Science, The University of Tokyo, Japan

Development of GPS photos databasefor land useand landcover
Developmentof GPS
PhotosmappingdatabaseforVanland
use andland incoverapplications
An Ngoc(FreelanceengineerVietnam),
Kyaw San Oo(Myanmarpeace center)Sannand Wataru
Takeuchi Takeuchi(UT)○AnNgoc Van・Kyaw
Oo・Wataru

Abstract: In land use and land cover applications, it is essential to validate the result by using the ground survey data. This study buildsup a GPS Photos database from those ground survey data. The ground survey data collected from the fields are processed to extracted thenecessary information and combined in to a database including the thousands of photos with the corresponding latitudes and longitudes,
land cover types and descriptions of many places in Vietnam, Laos and Myanmar. With the applications running on iPhone and iPad, thedatabase is updated easily and quickly. This database has been using for generating and validating the classification maps following
IGBP (International Geosphere Biosphere Program) 17 land cover classes.
Keywords : Land use and land cover, field survey, GPS Photos, IGBP

BackgroundThe data from field surveys are used to verify the result of land use and land cover change applications and make them more accurate. Almost
all of the research institutions of remote sensing, geology, forestry... in many countries have the data taken from the fields including photos
and the corresponding information such as latitude, longitude, altitude, land cover type... This is a very large data source which is updated
frequently and it will provide very useful information for many studies when it is organized as a database. This study builds up that kind ofdatabase from the field data of the Asian countries.
ObjectiveMethodology
NoProcessing
dataInput data

Surveyor

Yes
Validating result

Final result

UsersPhotoGPS Photos
Database
Fig 1. Land use and Land cover change data processing

Build up a GPS Photos Database including
User’s Location

Object’s Location

User-defined Data

Distance to Object

Polygon Information

Captured Time

Bearing Angle

Land Cover Type

Other Information

ServerPolygon

Location
ServiceFig 2. Creating GPS Photos database

ResultAugust 2010
Luang Nam Tha, Laos

September 2009
Bac Giang & Lang Son,Vietnam

August 2010
Bolikhamxay, LaosMar. & Sep. 2011
Quang Ninh,
Vietnam

December 2009
Khammouane, Laos
August 2010
Savannakhet & Atapu,
Laos

December 2009
Yok Don, Dak Lak,
VietnamMarch 2010
Can Gio, Ho Chi Minh city,
VietnamApril 2010
Krong No, Dak Nong,
VietnamMarch 2012
Ca Mau province,
VietnamFig 3. Places where data were collected

Fig 4. Collecting information with iPhoneFig 5. Collecting information with iPadSummary GPS Photos Database has been built up based on the data collected in the field trips
 Applications on iPhone and iPad make the database updating easy and quick User-defined data was included in the GPS Photos Database Current database includes nearly 6000 GPS photos of many different places inVietnam, Laos and Myanmar
 GPS Photos Database has been using to validate the land cover classification results
Future works
 Application for distributing GPS Photos Database will be developed Application for other mobile devices running Android operating system will be developed
Fig 6. GPS Photos database on Google Earth

furtherdetails,Dr.
contact:
Mr.Takeuchi
hogehoge,, Ce-505,Ce-505, 6-1,
Meguro,Tokyo
(URL: http://wtlab.iis.u-tokyo.ac.jp/
E-mail: hogehoge@iis.u-tokyo.ac.jp)
Further For
details,
contact:Wataru
6-1,Komaba
Komaba4-chome,4-chome,
Meguro,Tokyo
153-8505 JAPAN(URL: http://wtlab.iis.u-tokyo.ac.jp/
E-mail: wataru@iis.u-tokyo.ac.jp)