MV Advanced Optical Flow DirectShow Filter
The MontiVision Advanced Optical Flow filter is used
to detect and visualise optical flow withhin a video
stream. The filter uses an advanced feature tracking algorithm
instead of the simple block matching algorithm used in the MV
Optical Flow filter. The Motion I/O output pin signals if one or
more of the feature points in the image move a pixel distance
that is higher than the threshold. For example you can control
the MV Recording filter to
record a video stream only if there is motion within a scene. The
Direction I/O output pin outputs the global direction of
the motion vectors in degrees (0 to 360). The Magnification
I/O output pin outputs the global magnification of the motion
vectors. These pins are useful to determine direction and speed of
a single moving object.
You can access the X and Y positions of the feature points
directly through the IMVAdvanceOpticalFlow2 interface.
| File: |
AdvancedOpticalFlow.ax |
| CLSID: |
CLSID_MVAdvancedOpticalFlow |
Supported Interfaces
IMVAdvanceOptic |