Object Thrown from Building

This function can identify the event of throwing objects from building and identify the real target.

1. Go to Configuration > VCA > Object Thrown from Building via web browser.
2. Select a camera.
3. Check Enable Object Thrown from Building.
4. Click Area Settings and click to draw rule area.
   Note:

   1. Click to start drawing, left click each time on the screen to determine a vertex, right click to stop drawing. The inside of the drawn polygon is the shielded area. If you make a mistake, you can click and redraw.

   2. It is recommended to draw the detection area according to the outline of the building in the screen.

5. Enter Rule Name. The default name is rule 1.
6. Set the detection parameters.

   Sensitivity

   Used to detect and filter object(s) that are definitely not thrown from the building. The higher the value, the greater the possibility of a false alarm. Default value of 50 is recommended.

   Detection Confidence

   Used to detect suspicious object(s) in the detection area. The lower the value, the easier it is to detect the object in the video and make a judgment. Default value of 50 is recommended.

   Target Confidence

   Used to determine if the target is a real object thrown from building. The lower the value, the easier it is for a detected object in the video to be determined as an object thrown from building, and the greater the likelihood of a false alarm. Default value of 50 is recommended.

   Note:

   Default value is recommended at first. Adjustment can be made if false alarm is triggered frequently during the operation. Target confidence is recommended to be adjusted initially, and detection confidence is recommended to be adjusted later if no sound detection results provided. If still, there is no obvious effect, then adjust the sensitivity.

7. Click Save.
8. Click Arming Schedule. Refer to Configure Arming Schedule.
9. Click Linkage Method. Refer to Configure Linkage Actions.
10. Configure Shield Region.
    1. Click Shield Region.
    2. Draw the region.
    Note:

    1. If there are parts of the screen (either within or outside the detection area) that do not need to be detected (such as an area where the light jumps from time to time or leaves often drift by and trigger false alarms, etc.), you can draw it as a shield region.

    2. Click to start drawing, left click each time on the screen to determine a vertex, right click to stop drawing. The inside of the drawn polygon is the shielded area. If you make a mistake, you can click and redraw.

    3. 8 shield regions are supported.

11. Click Save.