Kapil Oberai Scientist Indian Institute of Remote Sensing India Geospatial Forum 2012

Open source is a development method for software that harnesses the power of distributed peer review and transparency of process. The promise of open source is better quality, higher reliability, more flexibility, lower cost, and an end to predatory vendor lock-in. (From opensource.org) 2

3 So What About Open Source? Four basic freedoms :  The freedom to run the program, for any purpose.  The freedom to study how the program works, and adapt it to your needs.  The freedom to redistribute copies so you can help your neighbour.  The freedom to improve the program, and release your improvements to the public, so that the whole community benefits. Why are they using it?  Often free with no up front and recurring fees  Anyone that can’t afford proprietary software  Ability to improve/contribute  Collaborative, community-based software development process

4 Open Source GIS – Desktop/Server Tools (The Players) GRASS GIS postgis.refractions.net/ mapserver.gis.umn.edu grass.itc.it PostGIS / PostgreSQL Spatial Database

 Wide accessibility, users from the world can access GIS data and analysis tools over the Internet.  No GIS software is required to install locally.  Users can directly manipulate maps and GIS data over the Web.  WebGIS can easily incorporate up-to-date, real-time information  There are many Open Source software available for WebGIS purpose such as MapServer, GeoServer, Degree etc. 5

RATIONALE

7 APPLICATION SERVER Satellite Data QGIS- Generation of GIS Layers (Shapefiles) QGIS SPIT Tool (Loading Shapefile to PostGIS Database) Spatial DB UMN Mapserver & KML Mapserver QGIS Plugin- Generation of.map file Web Enabled IIRS Campus Application (Apache- PHP/Mapscript) WEB BROWSER USER INTERFACE Spatial database server PostgreSQL/ PostGIS GIS Data DATABASE Apache with UMN Mapserver & KML Mapserver Web Enabled IIRS campus Application Mapserver configuration (.map) file Web Browser (Visualization through Internet/ Intranet) System ArchitectureMethodology

8 Database(s) File(s) Desktop GIS Server ApplicationsWeb ApplicationsDatabase Applications Commercial: ArcIMS, Metadata Explorer, ArcGIS Server OS: MapServer, GeoNetwork, GeoServer Commercial: ArcGIS Server, ArcGIS Image Server OS: GeoServer?, PostGIS Commercial: ArcSDE, Oracle Spatial OS: PostGIS Commercial: Oracle, SQL Server OS: PostgreSQL Commercial: ArcGIS, ArcExplorer, ArcPad OS: OpenJump, QGIS, uDig, GRASS, OSSIM Shapefiles, Images, CSV

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 Hugin an Open Source panorama stitcher tool was used for creating panoramic images of IIRS which can be visualized through the application to provide a realistic view of IIRS facilities to end user sitting on their workstation (  PTViewer 2.8: PTViewer is a java applet that can be used as a viewer for panoramic images. ( 12

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LIST OF SERVICES Fig: Accessing WMS Service using Open Source Quantum GIS LIST OF SERVICES WMS is a widely supported format for maps and GIS data accessed via the Internet and loaded into client side GIS software. 17

18 Thank You For Your Kind Attention