The MontiVision Zoom filter is used to zoom in on an area of the current frame to be processed to the frame size. The input ROI is used to specify the image region that is to be zoomed in on. The operation supports three different interpolation methods.
| File: | zoom.ax |
| CLSID: | CLSID_MVZoom |
Supported Interfaces
IMVFilterData
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 Zoom Property Page
Implements the IMVZoom configuration interface.
| Factor X | Horizontal zoom factor |
| Factor Y | Vertical zoom factor |
| Link | Links the zoom sliders, resulting in equal horizontal and vertical zoom factors |
| Position X | Horizontal position of the zoomed area |
| Position Y | Vertical position of the zoomed area |
| Interpolation | Nearest neighborhood, linear or cubic interpolation. |
| Origin | The position of the zoom area. |
| Dimension | The width and height of the zoom area. |