MV Mean DirectShow Filter
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
IMVMean
IMVHistogram
IMVHistogram2
IMVHistogram3
IMVFilterData
IMVAbout
IMVFilterInfo
IMVRegionOfInterest
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 |
|