Functions and Features
and pedestrian movements are recorded at numerous times (depending on
computer hardware) per second to allow real time playback.
dynamics such as roll, pitch, and yaw angles are all recorded in
details. Thus, users can easily spot the changes in road terrain and
re-examine the causes of a crash effortlessly.
|Car dynamics (roll, pitch, yaw)
The following table is a list of elements that are recorded. Other than
model movements, traffic signals, and scenario contexts.
pitch, yaw, turn signals, brake lights, etc.
actions, roll, pitch, yaw
||Changes in lights
||Details of a
- Control Panel
The control panel shown in the bottom can be accessed by going into Record/Play
ribbon -> Replay Plugin. The controls are straightforward and is similar
to a standard video player, where the user can choose between normal playback,
fast forward, rewind, or in slow motion. Users can also jump to a specific
section of the replay data by directly clicking on the seek bar. Once a
replay is saved, it can be viewd at any intended time.
- Tool Bar
It is possible to embed the tool bar into the main menu interface, which
allows a quicker, and more direct access to recording and playback features.
option allows users to select the view perspective during replay
playback (e.g. first person from the drivers's seat or third person
from outside). It is also possible to selectively record cars that are
at a certain distance, or record only pedestrians.
Linking with Scenario Plugin
plugin is the most useful when paired with the Scenario Plugin to allow
for a smoother recording of a certain scenario event. Users can choose
to track only a portion of the event, such as start recording from just
the few seconds before an accident to ensure that events are properly
designed. Another example is to track and confirm the driving distance
between a parking lot to a certain destination.
are recorded and compressed with ZLib, the same algorithm used for ZIP
files, to cope as much as possible with the problem that recording too
many moving 3D objects may cause the file size exceeding
Further, to prevent overuse of
RAM, only the desired section and a small portion ahead are
pre-written into the memory.
methods, we have prevented memory stresses and avoided data loading
delays, while maintaining the number of models and a high performance
replay data are managed
Linking with UC-win/Road SDK
- By combining this plugin with UC-win/Road SDK, it is
possible to record and control the playbacks from the SDK.
It is also possbile to view a replay and extract the detailed control
information, such as position, steering wheel angle, speed,
etc., during driving simulaiton mode in the SDK. The following
table contains some examples of the controls that can be manipulated
from the SDK directly.
Examples of Replay Plugin commands
||Specify a time
to start playback
information of the current car.