TDT RZ2 Manual page 394

8-26
To edit the vertices:
1.
2. You can now move, add, or remove a vertex.
Defining Targets
Targets are added to the configuration to identify fixed, relative,
or reference targets for tracking.
Fixed targets are an easily identified red, blue, or green area
on the target subject, such as an LED on a headstage or color
marker.
Relative targets are points expected to always be located in a
predictable area relative to a previously defined target, such as
a second LED on a headstage. This limits the search area,
which reduces processing demands and increases accuracy. The location of the
relative target can be used to infer information, such as the orientation of the subject
and can be used to more accurately place reference targets.
Reference targets are identified based on the location of previously defined
target(s). This is a point that maintains a fixed distance and angular separation
from other trackable targets but does not have a trackable marker. An example of
this is the nose of a mouse wearing a red/green LED headstage.
During recording, the tracking algorithm searches all areas of the image not defined
as a void region and identifies the location of the targets. Data for each target
(region, 0, x, y) and reference (region, heading, x, y) are saved in a text file
(tracking.txt) during each recording session. For each target or reference, the user
defines whether or not information is sent back to the RZ for real-time analysis and/
or storage. Information from up to eight targets and/or references can be returned to
the RZ. The Return option in the Target Specifications determines if the target or
reference target will be returned to the RZ.
Fixed Targets
At least one fixed target must be placed before any other types of targets.
To place a fixed target:
1.
2. Click in the image window to place the target.
RVMap Software for RV2
Note: Selected regions can also be changed using the
Hold down CTRL and double-click a region. The regions outline will be
wider and the vertices will be selectable.
• To move a vertex, click and drag the vertex.
• To add a vertex, hold CTRL and click on the region's boundary to place
a new vertex in that location.
• To remove a vertex, hold CTRL and click the vertex you want to
remove.
Click the Target button on the Region toolbar.
Select New Target Specifications
The
Regions
dialog opens.
System 3
menu.