CinePlex v3 Manual - Plexon Inc

2
that no pixels were in common with the previous frame. A value of 0 results
when:
• the frame is the first frame of the file,
• the previous frame and the current frame are identical,
• the tracking window switched from small in the previous frame to large in the
current frame,
• the tracking window switched from large in the previous frame to small in the
current frame, or
• the object in the previous frame and the object in the current frame are of 0
size.
CinePlex Studio writes the motion measure value to a digital VideoTracker
(DVT) format file; for more information, see “Digital VideoTracker (DVT) Files”
on page 156.
The Motion Measure frame-to-frame pixel overlap technique provides information
on the movement of the animal’s body over time. For example, a rotating
animal’s centroid might not change, but the Motion Measure feature would indicate
that the animal is not actually “frozen” because consecutive video frames are
not identical.
Note:
The VTViewer motion measure chart does not move until the center of gravity
is sent to the PLX file.
To apply the Motion Measure option
• On the Object Contour Tracker menu, click the Motion Measure checkbox.
HINT
Use Default Settings
Use the default settings toolbar button to return all CinePlex Studio
and camera settings to their default values. Set the default values
prior to configuring a tracking mode.
2.9.5 LED Mode Tracking
This section includes the configuration procedure for configuring CinePlex Studio
to track colored LEDs. The user may track up to three different colored LEDs.
Each tracking mode operates separately. The user cannot combine Object Contour
mode and LED mode. Use the Tracking Wizard (see “Object Contour Mode
Tracking” on page 75) to provide an on-screen guide to the following procedure.
82 CinePlex