Digital Signal Processing Reference
In-Depth Information
Fig. 5.14
Video tracking of separated objects:
First & Second row
: Reading sequence;
Third &
Fourth row
: Calling sequence;
top
: input frame;
bottom
: superimposed mask
5.3.3.2
Tracking of Multiple Overlapped Objects
Accurate and consistent tracking multiple overlapped objects is more difficult prob-
lem than that of spatially separated objects resulting from the dynamic change of
objects attributes such as appearance, shape, and visibility.
Tracking Using Basic Strategy
Due to the dynamic movements of the human objects, the motion field between ad-
jacent frames cannot be estimated accurately, especially between the intersections
of different object layers caused by the motion occlusion without correspondence.
These motion compensation errors degrade the segmentation results, which are ac-
cumulated into the following frames. Figure
5.15
b shows the tracking results after
