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
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. |