Optimizing Face Detection Accuracy; Installing Cameras - Lorex D861 Series User Manual

5 Camera Installation
• Install the camera between 8-16ft (2.5-5m) off of the ground.
NOTE
Accuracy of Person and Vehicle detection will be influenced by multiple factors, such as the object's distance from
the camera, the size of the object, and the height and angle of the camera. Night vision will also impact the accu-
racy of detection.

5.3 Optimizing 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
• The camera should be installed about 10 feet above the ground so as to ensure that the full pro-
portion of the face is detected on the screen.
• Angle the camera approximately 15° down from the level position.
• To distinguish facial features the distance from the camera to the face should be approximately
15 feet.
High Accuracy Face Detection Vs. Low Accuracy Face Detection:
Accuracy of Face Detection will be influenced by the distance and angle of the face from the cam-
era. For optimal Face Detection the camera must be positioned head on to capture a person's entire
face looking straight ahead. Obscured and/or partially or fully covered faces (i.e. a person's head
tilted down to look at their phone) will not be accurately detected. During low light conditions the
camera will impact color night vision by switching to black & white to ensure accuracy and im-
prove detection range of Face Detection. If you cannot meet the above requirements for installa-
tion it may be best to use person detection instead.
NOTE
• Person and vehicle detection needs to be disabled on all channels when even two face detection channels are
enabled.
• Face Detection is compatible with certain Lorex DVR's only. For a list of compatible DVR's please visit
lorex.com/compatibility.
• Face Detection is disabled by default. For more information on Face Detection setup and configuration, refer
to the chapter 12 Face Detection, page 37

5.4 Installing Cameras

1. Mount the cameras to the desired mounting surface according to the instructions that came
with the cameras (visit lorex.com
mounting surface that can support the full weight of the camera.
NOTE
If you wish to mount cameras to drywall, it is recommended to use the included drywall anchors.
#LX400111; r. 5.0/56647/56647; en-US
lorex.com.
for the most up-to-date documentation). Choose a firm
12