โครงการจัดตัง้ ศูนย์ ข้อมูลภูมสิ ารสนเทศผ่ านเครื อข่ ายสารสนเทศเพื่อพัฒนาการศึกษา
Geo-Spatial Digital Archive
Project (GDAP)
gdap.crma.ac.th
Feb 15, 2012
Col. Supachai Srihom
Chulachomklao Royal Military Academy
Nakhon Nayok, Thailand
Outline
• GDAP Overview
– Objective, Motivation, Problems, Data format
– GDAP system design
– GDAP web portal
• GDAP Implementation
– Focus area
– Implementation plan
Objective
• Establish the South-East Asia Geospatial
information center.
• Produce a demonstration system of online
geo-spatial data service
• User can search and access the data
through various methods: text search,
geo-location search, and meta-data
search.
• The applications of the data will be for any
studies that can utilize these data sets
Overview of GDAP
Geo-Spatial Digital Archive Project
A demonstration system of online geo-spatial data
service that user can search and access the data
through various methods: text
search, geo-location search,
and meta-data search. The
applications of the data will
be for any studies that can
utilize these data sets.
Motivation
– Availability of
• Data: digital data via remote sensors, aerial
photos, vector, 3D, public maps
• Communication: internet, multimedia
• Tools/Software
• Cheaper hardware: computers, storage, digital
cam, camcorder
Problem Statement
• Rarely exist online digital archive for Geo-Spatial
Digital Data in Thailand
• Most kept for private usage
• Create online Geo-Spatial Digital Archive for
public research
William Hunt’s Aerial Photographs Collection
World War II Map
Landsat Satellite Images
Sample Applications
– History and Archaeology Study
– Urban Study
– Land Use/Land Cover Study
Data Flow Diagram
Original
Map Interface
Other Map Sources
TIFF
Converted
JPEG
Geo-Locate
OpenLayer
Search Engine
Metadata
Digital
Archive
Text-Based
Map Interface
GDAP •Search
Engine
Google, MapServer
Other Map Sources
MySQL
Metadata
• WMS, Yahoo, etc.
OpenLayer
Search Engine
• OpenLayer script
• Query to MySQL
• Embedded in HTML
Digital
Archive
Directory-Based
* Keyword Search
* Web Interface
* PHP Query to MySQL
Text-Based
Listing +
Thumnail
GDAP web site
SL-04
PC-01
Data in
Digital Archive
PC-02
LOCATION INDEX
Present Data in
Location Order
PC-03
PC-03a
Keyword Search
Map System
PC-03b
bangkok
Keyword
Search
PC-04
PC-05
Digital Map
Example
PC-06
WHC Aerial Photograph on Map
PC-07
PC-10
Show the location of Map Data
On the Mark
PC-10a
Relation of database and map
PC-11
Acknowledgement
•
•
•
•
CRMA
University of Kyoto - CSEAS
University of London -SOAS
Uninet