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General information

A privacy mask is an area that hides certain parts of the frame to ensure privacy. For example, when cameras are installed in an office, you can use a privacy mask to cover employees' computer screens to prevent the leak of logins, passwords, and other sensitive information. In critical infrastructure, you can use a privacy mask to hide sensitive elements such as control panels and screens containing critical data.

You can apply a privacy mask to the video image:

• when viewing live videos;
• when viewing the archive;
• on exported videos and still frames.

The detection tools detectors that support privacy mask:

• Face detector TV;
• Face detector VA;
• Face detector
VI;Face Detection
• VL;
• Face
Detection
• detector and
Temperature Control
• temperature control;
Masks Detection
• Mask detector TV (detection of a medical or similar mask on the face);
Masks detector VI
• Mask detector VL;
• Mask detector VA;
• Person-based privacy masking;
• People masking
 
• (based on data from the pose
detection tools
• detector).

Configuring a privacy mask

To configure a privacy mask, do the following:

1. Select the

 Video

2. Camera object and click the Image Modified button.

   Info
   title Note
   The button is inactive

,

3. if the text overlay button is

active

4. active Image Modified (see Putting a text over the Surveillance window).  For your convenience, you can click the Image Modified button and configure the mask on a still frame. To undo, click this button again.

5. In the preview window, sequentially set the anchor points of the closed area that you want to hide when viewing the live video image

. 

6. . The selected area is masked with a mosaic mask.

   Image Modified

   Info
   title Note
   When

the

7. an area is being constructed,

the

8. anchor points are connected by a two-color dotted

lin

9. line, which outlines the area's borders.

   Action	Result
   Left or right click in the Surveillance window	Create a new anchor point

in the

10. of an area

    Right-click

on

11. a created anchor point

    Delete

the area

12. an anchor point of an area
    Point the cursor to an anchor point and holding down the left mouse button, move the mouse	Move

the area

13. an anchor point of an area
    Click the Image Modified button	Delete

the area

You can mask the selected area with black color (by default), or with a mosaic mask. To apply the mosaic mask, do the following:

Click the Image Removed button inside

14. an area

.Set the Mosaic mask checkbox.
Image Removed

16. Click the OK button.

17. You can specify several areas.
18. Click the Apply
 button
19. button to save the changes.

Privacy mask configuration is complete. When you view a video image from this camera, the selected area is hidden.

Image Modified