Seminar Projects

1
Seminar Projects
Dong Xuan Associate Professor CSE Dept., The Ohio
State University
2
Barcode Scanner

• Motivation Check if friends have an item that
  can be borrowed before buying it
• Function User scans item barcode with camera,
  uploads to central DB, and checks if other users
  have the same product
• Implementation
• Java with Android SDK (client)
• MySQL and PHP (server)
• Google ZXING (barcode scan)
• Device T-Mobile G1

Architectural Overview
Internet
HTTP Request/ Response
HTTP Request/ Response
PHP Script
MySQL DB
3
OCR Text Scanner

• Motivation Store and use contact info about
  businesspeople instead of carrying around many
  business cards
• Functionality Takes a picture of card,
  recognizes text using OCR, and displays text with
  hyperlinks to call/email person, map location,
  visit website
• Implementation
• Java with Android SDK (client)
• PHP scripts (server)
• Tesseract OCR, netpbm (tools)
• Device T-Mobile G1

4
Multiplayer Tic-Tac-Toe Game

• Motivation Mobile phones have limited
  multiplayer game support
• Functionality Implements two-player tic-tac-toe
  via Bluetooth
• Implementation Java ME MIDlets and Bluetooth
• Device Any mobile phone that supports Java ME

Tic Tac Toe 1st Player
Tic Tac Toe 2nd Player
11X
O
X
X
00O
Mark
Mark
Exit
Exit
5
GPS Runner

• Motivation Joggers, runners, et al. need to keep
  track of their activities, coordinate group
  activity
• Functionality Keeps track of running statistics,
  displays paths ran on Google Maps
• Implementation
• C on Windows Mobile 6 (client)
• PHP, MySQL (server)
• Google Maps
• Device Verizon Wireless XV6800

6
Phone Security Utility

• Motivation Phones can be easily stolen and
  confidential data can be exposed
• Functionality Provides remote locking capability
  via SMS/MMS (password required), notifies user of
  theft via SMS/MMS, takes thiefs picture, sounds
  an alarm
• Implementation Python on Symbian S60 (via
  pys60) uses camera, location services, etc.
• Device Nokia N95 (uses front camera for picture)

7
Real-Time City Bus Tracker

• Motivation Students and commuters are often
  stuck waiting for Columbus city buses (COTA
  Central Ohio Transit Authority)
• Functionality Scrapes COTA RSS feed to get bus
  location (each bus has GPS) and displays it on a
  map
• Implementation
• Java ME (client)
• Sniffing parsing COTA feed
• Device any phone that supports Java ME

8
Flash Card Studying App

• Motivation Students use flash cards to help
  them learn concepts and its inconvenient to
  carry decks of cards around
• Functionality Allows students to enter
  information on electronic flash card and both
  check and refresh their knowledge
• Implementation Objective C
• Device Apple iPhone/iPod touch

9
Emergency Notification System

• Motivation People in danger need to
  unobtrusively notify authorities, esp. if their
  lives are in jeopardy
• Functionality Those in danger press button on
  smartphone to notify police of threat with GPS
  location virtual keyboard can be used with
  camera sensor
• Implementation C (for Symbian OS)
• Device Symbian OS-powered phones

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Conclusion

• Students in OSUs smartphone seminar developed
  numerous applications with many possible
  extensions, e.g.,
• Using smartphone cameras for distributed,
  context-sensitive image processing
• Unobtrusively notify police via smartphone when
  one is held at gunpoint without gunman noticing
• Thank you! Questions and comments?