HotShot SC User Manual
Rev 1.2.5 –March 2012
© NAC Image Technology Inc
Jimmy Robinson
44
by the target from frame to frame. The search areas is shown by the Cyan square in
Figure 1. The smaller the search area, the faster the tracking process.
If the software consistently fails to find the target then it might be because the search
area is too small.
Using
Predictive Search
, the software will first predict the position of the target
before setting the Search Area. By default this is activated.
Using
Dynamic Search Area
will allow the software to automatically
decrease
the
search area size if it is useful to do so.
6.14.4.2.5 Threshold
Limit
The Threshold Limit is the measure of “Pattern Match Accuracy”. If during searching
the pattern match accuracy drops below this level then the software will request user
confirmation. The default is a 90% match. In some cases it may be helpful to reduce
this. HOWEVER, the more the reduction, the more likely it will be that the software
could start “drifting” in its tracking results.
6.14.4.2.6 Quadrant
Centring
When tracking a Quadrant Target, the software will perform Auto centering function.
It does this by looking for edges around the Quadrant Centre Circle. This is shown as
the red circle in
