User`s manual
Table Of Contents
- Overview
- Accessing the Network Camera
- Using 3GPP-compatible Mobile Devices
- Using RTSP Players
- Using VIVOTEK Recording Software
- Main Page
- Client Settings
- Configuration
- System > General settings
- System > Homepage layout
- System > Logs
- System > Parameters
- System > Maintenance
- Media > Image
- Media > Video
- Media > Video
- Media > Audio
- Network > General settings
- Network > Streaming protocols
- Network > SNMP (Simple Network Management Protocol)
- Security > User Account
- Security > HTTPS (Hypertext Transfer Protocol over SSL)
- Security > Access List
- PTZ > PTZ settings
- Event > Event settings
- Applications > Motion detection
- Applications > DI and DO
- Applications > Tampering detection
- Applications > Audio detection
- Applications > VADP (VIVOTEK Application Development Platform)
- PIR
- Recording > Recording settings
- Local storage > SD card management
- Local storage > Content management
- Appendix
VIVOTEK
128 - User's Manual
► 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: