Master

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s Thesis 2006 LI Hui 

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Cartographic client application   

STUTTGART

TECHNIK

for Mobile Devices   

    STUTTGART UNIVERSITY OF APPLIED SCIENCES 

Master Course Photogrammetry and Geoinformatics   

Abstract 

The fields of geoinformation technology and cartography have seen dramatic changes in 

the last decade. The dissemination of digital geospatial data is no longer bounded by the 

desktop platform. It is available now on mobile devices such as PDAs (personal digital 

assistants), smart phones etc.   

The  mobile  devices  which  support  J2ME  (Java  2  Micro  Edition)  offer  the  users  and 

developers  one  open  interface,  the  application  developers  and  users  can  develop  or 

download the software according their own demands. At present, J2ME has been one of 

the most popular mobile devices development platforms.   

Now WMS (Web Map Service) can afford not only traditional raster image, but also the 

vector  image.  SVGT  (Scalable  Vector  Graphics  Tiny)  is  one  subset of  SVG  (Scalable 

Vector  Graphics)  points  to  mobile  devices.  Because  of  its  precise  vector  information, 

original  styling  and  small  file  size,  SVGT  format  is  fitting  well  for  the  geographic 

mapping  purpose,  especially  for  the  mobile  devices  which  has  bandwidth  net 

connection limitation.   

The  aim  of  this  research  was  to  develop  a  cartographic  client  for  the  mobile  devices, 

using  SVGT  and  J2ME  technology.  Mobile  device  was  simulated  on  the  desktop 

computer  for  a  series  of  testing  with  WMS,  for  example,  send  Getcapabilites  and 

GetMap request , get the responding data from WMS and then display both vector and 

raster format image.   

Analyzing and designing of System structure such as user  interface and code structure 

were  discussed,  the  limitation  of  mobile  device  should  be  taken  into  consideration  for 

this  applications.  The  parsing  of  XML  document  which  was  received  after  the 

GetCapabilites request and the visual realization of SVGT and PNG (Portable Network 

Graphics) image are important issues in codes

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 writing. At last the client was tested on 

Nokia S40/60 mobile phone successfully. 

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