MV Topography DirectShow Filter
The MontiVision Topography filter generates a
topography map from the current video frame. The video frames is
downsamled and upsampled using a gaussian 5x5 filter kernel up to
factor 16. The number of output grey levels can be limited in order
to generate different topographies.
| File: |
Topography.ax |
| CLSID: |
CLSID_MVTopography |
Supported Interfaces
IMVTopography
IMVHistogram
IMVHistogram2
IMVHistogram3
IMVFilterData
IMVAbout
IMVFilterInfo
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. |
MV Topography Property Page
Uses the IMVTopography interface to setup
the filter.
| Scale down by factor |
Downscaling and upscaling by factor 0, 2, 4, 8 or 16. The
higher the factor, the more the video frame is smoothed. |
| Number of output grey levels |
The number of output grey levels used to generate the
topography. |
| Invert output image |
If checked, the resulting output image is inverted. |
|