1. xChange
EECS 441
Team JAM
Jeremy Ouillette
Ali Khalil
Michael Bader
11 April 2012

2. Agenda
1. What is the Pain?
2. How does xChange solve the pain?
3. Demonstration
4. What did xChange teach us?
5. What features does xChange have?
6. What are our next steps?
7. Summary/Conclusion

3. What is the Pain?
Have a handful of coins but
don’t know their worth
Use Cases:
4. Travelling to new
countries
5. Wanting to count coins
without actually counting
6. Young children learning
how to count

4. How does xChange solve the Pain?
What it does:
2. Take a picture of coins
with a smartphone
camera
3. xChange adds up the
total value of the coins
4. Convert coins to other
currencies

5. Agenda
• What is the Pain?
• How does xChange solve the pain?
• Demonstration
• What did xChange teach us?
• What features does xChange have?
• What are our next steps?
• Summary/Conclusion

6. 1. Snap picture of coins

7. 2. See the results

8. 3. Convert the Currency

9. What did xChange teach us?
We learned that:
3. Image Recognition is HARD
4. We could have gotten more done if we had prior
mobile programming experience
6. Three person teams are very effective
8. We need to create features users want instead of
features we think are cool

10. What features does xChange have?
Feature xChange Coin Counting Currency
Applications Converters
Converts
Currency
Add individual
coins to get
total
Count and sum
coins by taking
a picture

11. What are the next steps?
1. Already Submitted to Android
Market on 09 Apr 12
3. Fine tune image recognition in
bad lighting
5. Add image recognition for other
currencies
7. Expand xChange technology to
other disciplines (eg. education)

12. Summary/Conclusion
Xchange The Team
3. Count coins without 3. Had a lot of fun learning
actually counting! mobile
4. All-in-one application to 4. Could have done more if
count and convert we knew Android and
5. Has potential in iPhone platform
education as well 5. Mobile is the future!

13. Thank you!