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Cycle. Cheng Fu & Kotaro Hara. Do you know where in your city you can bike?. There aren’t many ways to know where you can go with your bike. We make a mobile app that allows cyclists to collaboratively collect data about where they can travel by bicycle. Why do people care?. - PowerPoint PPT Presentation
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Cycle
Cheng Fu & Kotaro Hara
Do you know where in your city you can bike?
There aren’t many ways to know where you can go with your bike
We make a mobile app that allows cyclists to collaboratively collect data about where they can travel by bicycle
A convenient tool for cyclists as a community to know where they can bike in prior to their trip (*)
Why do people care?
A tool that can be used by policy-makers, planners, and the public to promote cycling (**)
(*) cyclopath.org(**) Winters, M. (2012) Bike Score: Applying Research to Build Web-Based Tools to Promote Cycling
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Google Map Bicycle Route
Sparse data! Also, it tells you where you can go, but does not inform how nice roads are
There are prototypical solutions such as Geowiki’s where cyclists can collaboratively update information about
bicycle accessible routes
Geowiki is nice, but it is hard to attract people to proactively enter data :’( Also, post-hoc reviews are the only
way to provide information about how nice paths are
How can we make data collection activity more engaging so people want to help us collect data?
We want to make a fun mobile app that people could use while they are biking so we can collect data (bike
path locations, road conditions, road aesthetics) in background
Fog of WorldThe app visualizes where the user have and have not visited on a map. It also gives a user badges as they explore the world.
Purple PedalsThe system locates a position of a bicycle, take a picture, and send it to Flickr. It allows you to track your cycling activity.
We make a Fog of World like app that visualizes where users have and have
not been and persuade them to explore the world.
We could also monitor information about users’ travel (e.g. how fast you are traveling and how long you have traveled on the day) and give users
real-time feedback.
System Structure
We equipped a bike with an Android phone to collect pictures and other types of data
Galaxy Nexus on the bike handle
A phone holder
Back Camera
Accelerometer
GPS
Gyroscope
MapView interface we created
The white area with variable transparency represents the area that you have not traveled
The area you have traveled becomes visible on the map.
A line with variable colorcould visualize different attributes, e.g. how fast youtraveled.
StatsView Prototype
Speed of a bicycle was calculated by Haversine Formula with GPS coordinatesSpeed
12 km/h
This is a prototype. We completed the backend to get camera preview and other sensor data, but not the interface to show these information
Constantly taking pictures
We developed the background program so it can constantly capture pictures. But these pictures were taken manually with
the default camera app as our app kept on crashing
Difficulties 1
We realized that a phone screen becomes hard to see if we try to set a pose of a phone so the back camera
can capture pictures with good composition.
Difficulties 2
Sampling frequencyHow often should we collect data?
And for continuous data (accelerometer and gyroscope), how long should we collect data for each
segment?
Future Work
Make a UI
Utilize data collected from gyroscope and accelerometer for analyzing road conditions
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