LECTURING ON SATELLITE IMAGERY PROCESSING AND GIS BASED ON INTERNET AND OPEN SOURCE SOFTWARE

Fatwa Ramdani* *Geo-environment, Institute of Geography, Earth Science Department, Graduate School of Science, Tohoku University, JAPAN

• Background• Objective and motivation• Trial of instruction• Result• Another case studies• Conclusions

Overview

Background Convenient and suitable system

for natural resourc

es manage

ment

ILWIS MAPWINDOW

GOOGLE EARTH

Resulted

many opportunities for

advance

spatial analys

is ways

DOT-COM BUST

INTERNET CONNECTION

WEB-GIS

Users of remote sensing and GIS recently have spread from professional users to non-professional users.

General Research Framework and Analytical Structure in Geographical Study

Ecological System Deforestation

Turbidity Drought

Vegetation characteristics

etc.

Social System macroeconomic

change population growth change in policy biofuel market

demand technological

transformation etc.

Environmental Management

Impact t

o

human-

environment

Dynamic of

land syste

m

Driving forces Changes in environmentEnvir

onmental

Susta

inability

GIS

RS

ILWIS• ILWIS is a user friendly open source Geographic Information System. ILWIS

is acronym from Integrated Land and Water Information System. The system was developed and distributed by ITC Enschede (International Institute for Geo-Information Science and Earth Observation) in the Netherlands for use by its researchers and students. Since 1 July 2007 it has been distributed and became free software. ILWIS supports numerous vector, raster, and database formats and functionalities, we can visualize, manage, edit, analyze data, and compose printable maps, integrated raster and vector approach. Therefore, it is evaluated as a convenient and suitable system for natural resources management.

Map Window GIS• MapWindow , a GIS software, is free to use and redistribute to clients and

other end users. Unlike other free tools, MapWindow is more than just a data viewer, it is an extensible geographic information system. This means that we can write plug-in, add additional functionality (models, special viewers, hot-link handlers, data editors, etc.) and pass these along to clients and end users. MapWindow includes standard GIS data visualization features as well as input database attribute table editing, shapefile editing, and grid importing and conversion.

Google Earth

• we can use freely Google Earth which is the easiest and accessible geographic information on the internet. We can access to it from computer, mobile phone, tablet or browsing the web. Most of user, using Google Earth as navigator to find their way, after all they can drawing, measuring, and geo-tagging photos as they want to.

Google Earth

• The objectives of this paper is to optimize open source software like ILWIS and MapWindow GIS in education and to introduce a case study of teaching on remote sensing (imagery processing) and GIS based on internet connection.

• Introduce students with open source software beside the commercial software

• To prevent students from piracy activity which is criminal action in Indonesia

Objectives and Motivation

Trial of instruction

Online data collection and

processing

kml2shp

Imagery-readyOffline data processing

Google Earth

Due to the above practice, we finally could confirm the correspondence between development of access transportation and expansion of urban land uses

through land use conversion.

Optimum duration is the length of course in this study, we used three types of length duration: 45 minutes course, 60 minutes course and 90 minutes course.

Subject matter is subject that was delivered in this class. It was about development of access transportation and expansion of urban land uses. Illustration and description is about how students feel satisfied with description and illustration given.

Feedback is how many students asking after following the class. Planning the lesson and material is how students feel satisfied with lecturer. Was the lecturer planning well and ready to deliver the

material in good explanation. And repeating the lesson from quiz is how many students can answer the question in correctly. Statistical data showed in figure above. The optimum satisfaction from students in receive the lesson using this method is in 90 minutes

duration, with the highest feedback, repeating the lesson from quiz, planning the lesson and material, and giving illustration and descriptions. Therefore, we recommended to choose 90 minutes course than two type others. Because it is to o short to practice all subject or materials in this class.

Result

45 minutes

60 minutes

90 minutes0

2

4

6

8

10

12

optimum duration subject

matter illustration and

describtionplanning the lesson and material

feedbackrepeating the lesson from quiz

45 minutes

60 minutes

90 minutes

Extraction of Urban Vegetation in High Dense Urban Environment to measure Inhabitants Satisfaction of Urban Green Space

Another case study (1)

NDVI Urban vegetation

Satellite imagery: WorldView 2Acquisition date: November 19, 2010

Location: Depok City, West Java, Indonesia

Another case study (1a)Decision Tree Classification using NDVI value as threshold

Another case study (2)

Sixteen years time interval monitoring of large seasonal-tropical lake with low accessibility

July, 2010; wet season September, 2004; rainy season June, 1990; wet season

Satellite imagery: Landsat TM and ETM+Location: Sentarum Lake, West Kalimantan, Indonesia

Another case study (2a)

Monitoring remarkable expansion of oil palm plantation

Year 2009; 2,274 ha and located only 420 m from National Park

(green color)

Year 2011, 9,919 ha and now located less than100 m from National Park (green color)

Another case study (3)Urban development monitoring in eastern Indonesia; Satellite imagery: Landsat TM and ETM+, Location: Wandama Gulf, West Papua, Indonesia

4/2/1989 9/24/2003 8/26/2010

Another case study (3a)Urban development monitoring in western Indonesia; Satellite imagery:

Landsat ETM+, Location: Palembang, South Sumatera, Indonesia

2001 2010

Another case study (5)Land use land cover classification

for urban planning and development

Satellite imagery: SPOT5Acquisition date: August 5,

2006Location: Indragiri Hulu

Regency, Riau, Indonesia

The necessity and utility of instruction on using this free software is strongly recommended in 90 minutes length duration course.

The benefit using open source software are low-cost even free of charge, easily to convert and doing geospatial analysis (union, clip, dissolve, etc), export to .JPG format file and/or PDF, and very friendly user interface, make it easier to use even for a new comer in RS/GIS.

Extensive application in order to environmental monitoring in developing country like Indonesia; many island and remote area with low accessability

The difficulties of ILWIS and MapWindow GIS are in cartographic rules and design and unstable software in computer with minimum specification. We suggest minimum 2GB of RAM and good processor with high performance graphic card.

We strongly recommended this method to apply in the class of remote sensing and GIS for undergraduate students with basic knowledge of geospatial science for optimum result.

Conclusions

どうもありがとうございました Thank you for your attention