16 Face Detection

The Face Detection feature allows you to detect and capture faces in the camera’s field-of-view while triggering alarms and/or notifications. The Face Recognition feature is used to compare captured faces with the Face Database, which can also be set to trigger an alarm and/or send notifications.

Face detection is compatible with certain Lorex cameras. For a complete list of compatible cameras, navigate to your recorder series at .

16.1 Ensuring Face Detection Accuracy

The following are important camera installation notes to ensure accurate Face Detection. For full camera mounting instructions, see your camera’s documentation at .

Angle	Height	Minimum Distance	Maximum Distance
15°	8.2ft (2.5m)	2.8ft (0.86m)	10.4ft (3.19m)
15°	9.8ft (3m)	4.5ft (1.39m)	9.9ft (3.02m)
15°	11.5ft (3.5m)	6.3ft (1.93m)	9ft (2.75m)

Install in a bright area and avoid facing direct sunlight with strong backlights and dark shadows
Choose a location where objects of interest will be no further than 10.4ft (3.19m) from the camera
Position the camera about 9.8ft (3m) off the ground to detect the full proportion of a face
Angle the camera around 15° down from the level position
Point the camera directly where objects of interest will be facing

High Accuracy Face Detection Vs. Low Accuracy Face Detection:

Accuracy will be influenced by lighting conditions and the distance/angle of a person’s face to the camera. To distinguish facial features, the camera must be positioned head on with a clear view of a person’s face. Obscured and partially/fully covered faces will not be accurately captured. To improve the range of face detection in low light conditions, color night vision will switch to black & white. If you cannot meet these requirements for installation, it may be best to follow the guidelines for person and vehicle detection instead.

16.2 Configuring Face Detection

The system allows you to monitor for face detection events. Select channels that you want to enable face detection on and adjust preferences.

To configure face detection settings:

From the Live View display, right-click to open the Quick Menu, then click Main Menu.

Click Events, then Event Settings. Click the Face Settings tab from the side panel, then the Face Detection tab from the drop-down menu.

Select a channel with a compatible camera.

Check to enable face detection on the select channel.

Click Setup next to Schedule to choose which days of the week to enable face detection:

Click or click-and-drag along each of the red timelines to quickly add or remove time from each day’s schedule in 30–minute segments.
Click beside 2 or more days to link schedules ( ). This allows you to quickly change multiple schedules at once.
To make fine adjustments to a schedule, click . This will allow you to set exact start and end times for a schedule.

Choose how the system will react to face detection:

Show Message: Check to enable an on-screen pop-up when one of your cameras detects motion. On-screen pop-up shows the channels an event occurred on and the type of event.
Send Email: Check to enable email alerts. You must configure email alerts before you will be able to receive them (see 19.6.9 Configuring Email Alerts ).
Record Channel: Select the channels that will record when motion is detected on the selected channel. Set the length of recording following a motion detection event in the Post_REC field.
PTZ Activation: Set connected PTZ cameras to start a tour, pattern, or go to a preset location.
Sequence: Sequence mode will begin. Select the numbered tiles next to this option to include the corresponding channels in the sequence.
Snapshot: Select the numbered tiles next to this option to save a snapshot of the corresponding channels.
Buzzer: Check to enable the system buzzer.
Warning Light: Check to enable the warning light when motion is detected. Click Schedule to set the warning light schedule. To adjust the warning light settings, refer to section 14.1 Configuring Warning Light .

Dual Warning Light (White/Blue Light): Check to enable the dual warning light when motion is detected. Click Schedule to set the dual warning light schedule. To adjust the dual warning light settings, refer to section 14.2 Configuring Dual Warning Light .

Click Apply to save changes.

16.3 Displaying the Face Preview Panel

Display captured faces from face detection in the Face Preview Panel, located on the right side of your camera’s Live View display.

To display the face preview panel:

From the Live View display, right-click to open the Quick Menu, then click Live Mode.

Click AI Mode. The Face Preview Panel will appear on the right side of the screen.

To disable the Face Preview Panel, click Continuous.

16.4 Searching for Face Detection Events (Smart Search)

Search for face detection events on a specific channel or the entire system. You can also choose to back up events (USB flash drive required – not included).

To perform a smart search:

From the Live View display, right-click to open the Quick Menu, then click Smart Search.

Click the Face Detection tab from the side panel.

Select a camera to search for detection events, or select All cameras.

Choose a period for your search, then enter the start and end time.

Click Search.

Events that match your search criteria are displayed. You now have the following options:

Click a thumbnail to preview the event. Double-click the preview window to view in full screen.
Check thumbnails to perform other actions:
- Backup: Back up events.
- Lock: Lock events.
- Add Book Mark: Bookmark events.

16.5 Configuring the Face Database

The system allows you to create a detailed face database to use with the face recognition feature. The accuracy rate of face recognition depends on the face database. A good face database needs to be continually growing, with a variance in lighting, angles, and facial expressions.

16.5.1 Create a Face Database

Create a detailed collection of identities in the face database using two methods.

To register faces through imported images:

From the Live View display, right-click to open the Quick Menu, then click Main Menu.

Click Events, then Event Settings. Click the Face Settings tab from the side panel, then the Face Database tab from the drop-down menu.

Click Add.

Enter a Name for the face database, then click OK.

To edit the database name, click the Modify icon icon

Click the Details icon icon

to view the face database details and add new face images.

Connect your USB (not included) to one of the system’s free USB ports.

Click Register to upload one face image at a time or Batch Register to upload more than one face image at a time.

Double-click to upload a face image from your connected USB (not included).

Fill out additional details for the face database entry.

Click OK to upload the face image(s).

To register faces captured through face detection:

From the Face Preview Panel, double-click the captured face detection image that you want to register.

Click Add to Face Database.

To create a new face database, enter a name and fill out the rest of the details.

To add to an existing database, check the face database the face image applies to.

Click OK to register the captured face image.

16.5.2 Search for Registered Faces in the Database

You can quickly search through a Face Database by entering the registered face details.

To search through the face database:

From the Live View display, right-click to open the Quick Menu, then click Main Menu.

Click Events, then Event Settings. Click the Face Settings tab from the side panel, then the Face Database tab from the drop-down menu.

Click the Details icon icon

for the face database that you want to search through.

Enter the assigned Name, Gender, or the No. (ID number).

Click Search.

(OPTIONAL) Click Reset to clear the search.

16.5.3 Deleting Registered Faces or a Face Database

You can easily delete registered face images from a face database as well as delete one or more face databases.

To delete registered faces in a face database:

From the Live View display, right-click to open the Quick Menu, then click Main Menu.

Click Events, then Event Settings. Click the Face Settings tab from the side panel, then the Face Database tab from the drop-down menu.

Click the Details icon icon

for the face database that you want to delete registered face images from.

Click the registered face image that you want to delete.

Click Delete.

To delete a face database:

From the Live View display, right-click to open the Quick Menu, then click Main Menu.

Click Events, then Event Settings. Click the Face Settings tab from the side panel, then the Face Database tab from the drop-down menu.

Check the face database(s) that you want to delete.

Click Delete.

16.6 Configuring Face Recognition

Use the face recognition feature to compare and match faces against an existing face database of identities. Before you configure for face recognition, make sure you have a face database to link with. See section 16.5 Configuring the Face Database for more details.

16.6.1 Configuring General Alarm Mode for Face Recognition

General Alarm is used to link face recognition with existing face databases. This way you can be alerted when someone in one of your face databases is detected.

To configure general alarm mode for face recognition:

From the Live View display, right-click to open the Quick Menu, then click Main Menu.

Click Events, then Event Settings. Click the Face Settings tab from the side panel, then the Face Recognition tab from the drop-down menu.

Select a channel with a compatible camera.

Check to enable face recognition on the selected channel.

Select the General Alarm mode.

Click Setup next to Target Face Database and select the face database(s) that you want to match face recognition with. Click OK, then check to enable the face database(s) for face recognition.

Click Setup next to Schedule to choose which days of the week to enable face recognition:

Click or click-and-drag along each of the red timelines to quickly add or remove time from each day’s schedule in 30–minute segments.
Click beside 2 or more days to link schedules ( ). This allows you to quickly change multiple schedules at once.
To make fine adjustments to a schedule, click . This will allow you to set exact start and end times for a schedule.

Click the Modify icon icon

to enter a percentage between 50% to 100% for calculating the face recognition similarity with the linked face database(s).

Click the Trigger icon icon

to choose how the system will react to face recognition:

Show Message: Check to enable an on-screen pop-up when one of your cameras detects motion. On-screen pop-up shows the channels an event occurred on and the type of event.
Send Email: Check to enable email alerts. You must configure email alerts before you will be able to receive them (see 19.6.9 Configuring Email Alerts ).
Record Channel: Select the channels that will record when motion is detected on the selected channel. Set the length of recording following a motion detection event in the Post_REC field.
PTZ Activation: Set connected PTZ cameras to start a tour, pattern, or go to a preset location.
Sequence: Sequence mode will begin. Select the numbered tiles next to this option to include the corresponding channels in the sequence.
Snapshot: Select the numbered tiles next to this option to save a snapshot of the corresponding channels.
Buzzer: Check to enable the system buzzer.
Warning Light: Check to enable the warning light when motion is detected. Click Schedule to set the warning light schedule. To adjust the warning light settings, refer to section 14.1 Configuring Warning Light .

To remove a face database from the face recognition list, click the Delete icon icon

Click Apply to save changes.

16.6.2 Configuring Unfamiliar Face Alarm Mode for Face Recognition

Unfamiliar Face Alarm is used to detect faces that do not match up with any face databases.

To configure unfamiliar face alarm mode for face recognition:

From the Live View display, right-click to open the Quick Menu, then click Main Menu.

Click Events, then Event Settings. Click the Face Settings tab from the side panel, then the Face Recognition tab from the drop-down menu.

Select a channel with a compatible camera.

Check to enable face recognition on the selected channel.

Select the Unfamiliar Face Alarm mode.

Check to enable the Unfamiliar Face Alarm mode.

Click Setup next to Schedule to choose which days of the week to enable face recognition:

Click or click-and-drag along each of the red timelines to quickly add or remove time from each day’s schedule in 30–minute segments.
Click beside 2 or more days to link schedules ( ). This allows you to quickly change multiple schedules at once.
To make fine adjustments to a schedule, click . This will allow you to set exact start and end times for a schedule.

Choose how the system will react to face recognition:

Show Message: Check to enable an on-screen pop-up when one of your cameras detects motion. On-screen pop-up shows the channels an event occurred on and the type of event.
Send Email: Check to enable email alerts. You must configure email alerts before you will be able to receive them (see 19.6.9 Configuring Email Alerts ).
Record Channel: Select the channels that will record when motion is detected on the selected channel. Set the length of recording following a motion detection event in the Post_REC field.
PTZ Activation: Set connected PTZ cameras to start a tour, pattern, or go to a preset location.
Sequence: Sequence mode will begin. Select the numbered tiles next to this option to include the corresponding channels in the sequence.
Snapshot: Select the numbered tiles next to this option to save a snapshot of the corresponding channels.
Buzzer: Check to enable the system buzzer.
Warning Light: Check to enable the warning light when motion is detected. Click Schedule to set the warning light schedule. To adjust the warning light settings, refer to section 14.1 Configuring Warning Light .

Click Apply to save changes.

16.7 Searching for Face Recognition Events (Smart Search)

Search for face recognition events on a specific channel or the entire system. You can also choose to back up events (USB flash drive required – not included).

To perform a smart search:

From the Live View display, right-click to open the Quick Menu, then click Smart Search.

Click the Face Recognition tab from the side panel.

Select a camera to search for face recognition events, or select All cameras.

Choose a period for your search, then enter a start and end time.

Click Search.

Events that match your search criteria are displayed. You now have the following options:

Click a thumbnail to preview the event. Double-click the preview window to view in full screen.
Check thumbnails to perform other actions:
- Backup: Back up events.
- Lock: Lock events.
- Add Book Mark: Bookmark events.

	WARNING
Facial recording without consent is illegal in certain jurisdictions. Lorex Technology does not assume liability for any use of its product that fails to conform with local laws.

	Note
Face detection cannot be used simultaneously with other detection settings. Disable motion detection, smart motion detection, and virtual fence on all channels to enable face detection.

	Note
Warning Light and Dual Warning Light cannot be enabled at the same time.

	Note
The Face Preview Panel must be enabled to register a face image through face detection. To enable the Face Preview Panel, see section 16.3 Displaying the Face Preview Panel .