Calculates the mean value from the current input image, color images are converted to greyscale internally. The mean value of an image can be used to represent the level of illumination. If enabled, the filter will adjust the mean value of the image to 128 to adapt illumination.
| File: | Mean.ax |
| CLSID: | CLSID_MVMean |
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. |
Supported I/O Pins
| I/O Pin | Corresponding method | Discription |
| Mean [unsigned int 8] |
IMVMean::GetImageMean | Mean value of the current image. |
MV Mean Property Page
Implements the IMVMean configuration interface.
| Image mean | The mean value of the current input image |
| Adjus image mean to 128 | If enabled, the mean value is adjusted to 128 |