To configure a VMD:

1. Set common parameters for video detection tools (see Setting General Parameters of Video Motion Detection).

2. By default, VMD (video motion detection) covers the entire FoV. In the FoV, you can set privacy masks - closed areas, inside of which you want no detection.
   Privacy masks are created similar to scene analysis configuration  (see Setting General Zones for Scene Analytics). 
   
   

3. The VMD analyzes differences between the current frame and the static background (4, 5). Depending on a particular scene, we recommend the following sensitivity values for contrast and size:

   1. Maximum sensitivity (street scenes where target objects are smaller):

      1. Sensitivity: contrast = 16.

      2. Sensitivity: size = 10.

   2. Medium sensitivity (default values for generic scenes):

      1. Sensitivity: contrast = 12.

      2. Sensitivity: size = 9.

   3. Low sensitivity (indoor cameras with an average distance to object of ca. 4m):

      1. Sensitivity: contrast = 8.

      2. Sensitivity: size = 8.

   For your convenience with setting sensitivity value, in the preview window you can see the Motion Mask. To disable it, select No in the Motion Mask (2) field.

   
   
   If there is motion, but it does not exceed the threshold value (because of the detection sensitivity), the mask cells are colored green. If motion triggers VMD, the cells turn red.

4. To get tracked objects and their parameters (percentage of the FoV width/height, color) displayed in the Preview window, select Yes in the Object Tracking field (3). 

5. The Video Motion Detection tool can receive tracking metadata generated by the Motion Mask. The metadata are recorded into the database by default. To disable, select No in the RecordObject Tracking (1).

   Though the VMD metadata are essentially less accurate than those from the Object Tracker (see General information on Scene Analytics), you win on lower CPU usage.

   
   

   You have to update the license file to use this feature. To do this, contact your AxxonSoft manager..

   
   

6. Click Apply.

VMD configuration is now complete.