5. Prototype system of mobile map annotation
system
This section describes the interface of the mobile map
annotation system.
Any user can register guide annotations by using the
following procedure:
1) Start the system app.
2) Select a marker on the map to register guide annotations.
3) Add photos and explanations.
4) Send guide annotations to the server by tapping the
register button.
5.2. Main screen
The main screen of the system’s app is shown in Fig.
10. The map image shown is retrieved from the server of
OpenStreetMap [3]. Any user can make the main screen
transition to the register screen by tapping a marker or line,
and then register guide annotations there. Further, they can
add new landmarks by changing the state of the togglebutton
at the bottom left corner.
5.3. Annotation interface
The annotation interface is shown in Fig. 11. Users
register guide annotations on this screen. The camera is
activated when the camera icon is tapped. Users can also
confirm whether the photo has been registered by tapping
the image icon
5.4. Adding new landmarks
New landmarks are added by first changing the state of
the toggle-button to ”On.” Then, new landmarks are inputted
by tapping on the map in the dialog shown.
5.5. Definding the relation between intersections
and landmarks
To define a relation between intersections and landmarks,
first, users simply long tap the desired intersection. A
popup is then displayed to urge them to select a landmark.
They can then define relations by selecting
6. Evaluation
We conducted an experiment to examine guide information
users add and evaluate content of navigation generated
by proposed system using prototype system.
6.1. Experiment method
We constructed a prototype and conducted experiments
to examine the guide information users added and evaluate
the content of the navigation generated by the proposed
system.
GroupA
Participants added guide annotations using smartphones
while walking along two navigation routes.
GroupB
Participants moved in accordance with navigation
generated using only road network information such
as node name and distance of links.
GroupC
Participants moved in accordance with navigation
generated using the proposed system. (The guide
annotations were registered by Group A.)
Participants in Groups B and C subsequently answered the
following questions for each navigation route after they had
finished their tasks:
1) Was the navigation easy to understand?
2) Was the content of the navigation appropriate?
3) Was the length of the navigation appropriate?