An Android based Quantum GIS prototype. Ramon Carrillo, Daniel Ochoa

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1 An Android based Quantum GIS prototype Ramon Carrillo, Daniel Ochoa

2 Summary Background Past works Quantum GIS Mobile Quantum GIS Results Future works

3 Background Robotic and computer vision centre (CVR) CVR focused mainly on data acquisition, processing and interpretation. Research on image analysis (biological, human motion, 3D reconstruction). The only 100% FOSS centre at ESPOL. Supports KOKOA, ESPOL free software community.

Research on image analysis (biological, human motion, 3D

4 Past works... no GIS Ocean currents Vehicle speed

5 Past works... no GIS Novel uses for remote sensing algorithms. Road detection Spatial relations

6 Current R&D interests CVR is the newest member of ESPOL's hydrology group: Need for Geo-referenced data collection. Extension and adaptation of HW and SW tools. Image analysis (pattern recognition). Limited image data in Ecuador.

Extension and adaptation of HW and SW tools.

7 A GIS tool prototype Field data collection using mobile computers (phones). Why a phone? Affordable. Decent CPUs + Sensors. Networking. Data calculation at input time. In-the-field geo-referenced data. Crowd-sourcing.

8 Our prototype Sensor network Data center Network Gateway Node Mobile GIS Phone OS HW User (gps,camera,etc)

9 Quantum GIS Recommended by polimi colleagues. Fully featured GIS package: Cross-platform (Linux, Windows, Mac) open GIS. Direct viewing of vector and raster data in different formats. Mapping and interactive exploration of spatial data. Create, edit and export spatial data. Supported by several institutions. Site:

Direct viewing of vector and raster data in different formats.

10 Quantum GIS DTM models Resource inventory Urban Planning

11 Quantum GIS architecture Core + extension mechanism (plug ins) QT (widgets) Plug-in Plug-in core GDAL/OGR Spatial DB WMS GIS Data Plug-in Sensor Data Core libraries include: QT (Graphic user interface) Native support for PostGis, Spatialite OGR (ESRI Shapefiles,S-57, SDTS, Oracle Spatial, and Mapinfo) GDAL (Raster, Aerial, Satellite data) Online spatial data (OGC-compliant), WebMapService (WMS).

interface) Native support for PostGis, Spatialite OGR (ESRI Shapefiles,S-57, SDTS, Oracle Spatial,

12 Quantum GIS architecture Plug-ins written in C++ or python About 160 plug-in available: GIS Data source access (Grass,QspatialLite). Sensor data access (Garmin GPS). Layer manipulation. Statistics, etc.

13 OS selection Windows phone, rather new, proprietary software. IOS, proprietary software. Limited and expensive hardware choice. Android, runs on top of Linux. Not as free/open as it should be. Runs on many devices. SDK & NDK development.

14 Network node Mesh network using Zigbee protocol Xbee module (900 Mhz) attached to USB port. FTDI driver for serial data exchange over USB port. Included in Linux kernel. Qgis plug-in written in C. Data logging. Data plotting. video

15 Mobile QGis Based on Marco Bernasocchi's work Full Qgis desktop software migration. Version for android tablet. Main result: cross compiled version of core-libraries Better performance on a reduced software stack. Basic features should work with android VM: Data Access. Layer manipulation. GPS support. Funded by GSoC and ESPOL

Main result: cross compiled version of core-libraries Better performance on a

16 Mobile QGis architecture Distribute tasks across the Android stack. Dalvik (JVM) SDK Java launcher + JNI QML NDK Qt GDAL GIS Data Spatialite Sensor Data

17 Mobile QGis challenges Rethink graphic user interface (new GUI). Consider phone hardware access restrictions. Get the correct set of development tools and utilities. Necessitas: Qt-android port. Ministro: Qt installer External libs (GDAL, GEOS, Proj4, expat, GSL, Iconv, QWT, sqlite, libpq, open-ssl) Cmake, Android ant build system.

Get the correct set of development tools and utilities. Necessitas: Qt-android port.

18 Results QGis on Android consists of: The cross compiled dependencies (.so files) An library file (.so shared object) of QGIS (there is no executable binary). A QML-based graphic application. Software distribution: apk package, ministro takes care of QT libs. Gps support enabled. Radio communication implemented and tested.

so shared object) of QGIS (there is no executable binary).

19 Mobile QGis Rendering and Gps support

20 Mobile Qgis GIS data edition

21 Future works Additional Data Sources (WMS) Add Off-line support. Enable access to more phone's sensors. Compas Cammera,etc. NDK interface for Xbee module. Java interface for Bluetooth module.

22 Questions?

Institute of Natural Resources Departament of General Geology and Land use planning Work with a MAPS

Institute of Natural Resources Departament of General Geology and Land use planning Work with a MAPS Lecturers: Berchuk V.Y. Gutareva N.Y. Contents: 1. Qgis; 2. General information; 3. Qgis desktop; 4.