MV Cooccurrence DirectShow Filter
The MV Cooccurrence filter evaluates the
Co-Occurrence matrix to calculate the contrast, energy,
entropy and symmetry values from the current image.
| File: |
Cooccurrence.ax |
| CLSID: |
CLSID_MVCooccurrence |
Supported Interfaces
IMVCooccurrence
IMVHistogram
IMVHistogram2
IMVHistogram3
IMVRegionOfInterest
IMVFilterInfo
IMVFilterData
IMVAbout
Supported COM Events
The filter supports following events through the IMVFilterEvents interface.
Look at the filter events page
for more information.
| Event
|
Value
|
Description
|
| MV_ALGORITHM_START_EVENT |
0
|
A filter starts processing a video frame or sample. |
| MV_ALGORITHM_END_EVENT |
1
|
A filter finishes processing a video frame or sample. |
Supported I/O Pins
| I/O Pin
|
Corresponding method
|
Discription
|
Contrast
[unsigned int 32] |
IMVCooccurrence::GetContrast |
Contrast of the current image. |
MV Cooccurrence Property Page
Uses the IMVCooccurrence
configuration interface.

Cooccurrence filter property page
| Use horizontal
neighbour |
Use the horizontal neighbour to create the co-occurrence
matrix |
| Use vertical neighbour |
Use the vertical neighbour to create the co-occurrence
matrix |
| Use horizontal and vertical
neighbour |
Use the both neighbours to create the co-occurrence
matrix |
| Update |
Update the property page to get the current results |
| Divide results ... |
Divide the results by the number of image pixels to normalize
the results |
| Auto update |
If checked, the results are updated continually |
| Contrast |
Contrast value of the current image |
| Energy |
Energy value of the current image |
| Entropy |
Entropy value of the current image |
| Symmetry |
Symmetry value of the current image |
|