User`s manual
Table Of Contents
- Software Installation on page 10
- Overview
- Network Deployment
- Ready to Use
- Software Installation
- Accessing the Network Camera
- Using VIVOTEK Recording Software
- Using 3GPP-compatible Mobile Devices
- Using RTSP Players
- Main Page
- Client Settings
- Configuration
- System > General settings
- System > Homepage layout
- System > Logs
- System > Parameters
- System > Maintenance
- Media > Image
- Media > Video
- Media > Audio
- Network > General settings
- Network > Streaming protocols
- Network > DDNS
- Network > QoS (Quality of Service)
- Network > SNMP (Simple Network Management Protocol)
- Security > User Account
- Security > HTTPS (Hypertext Transfer Protocol over SSL)
- Security > Access List
- Security > IEEE 802.1x
- PTZ > PTZ settings 
- Event > Event settings
- Applications > Motion detection
- Applications > DI and DO
- Applications > Tampering detection
- Recording > Recording settings
- Local storage > SD card management
- Local storage > Content management
- Appendix
VIVOTEK
User's Manual - 115
► How does motion detection work?
There are two motion detection parameters: Sensitivity and Percentage. In the illustration above,
frame A and frame B are two sequential images. Pixel differences between the two frames are
detected and highlighted in gray (frame C) and will be compared with the sensitivity setting. Sensitivity
is a value that expresses the sensitivity to moving objects. Higher sensitivity settings are expected to
detect slight movements while smaller sensitivity settings will neglect them. When the sensitivity is set
to 70%, the Network Camera denes the pixels in the purple areas as “alerted pixels” (frame D).
Percentage is a value that expresses the proportion of “alerted pixels” to all pixels in the motion
detection window. In this case, 50% of pixels are identied as “alerted pixels”. When the percentage is
set to 30%, the motions are judged to exceed the dened threshold; therefore, the motion window will
be outlined in red.
For applications that require a high level of security management, it is suggested to use higher
sensitivity settings and smaller percentage values.
A
B D
C
NOTE: