102
Video motion detection
Video motion detection (VMD) is a common feature in video management systems. It is a way of
defining activity in a scene by analyzing image data and differences in a series of images. With
VMD, motion can be detected in any part of a camera’s view. Users can configure a number of
“included” windows (a specific area in a camera’s view where motion is to be detected), and
“excluded” windows (areas within an “included” window that should be ignored). Using VMD
helps to prioritize recordings, decrease the amount of recorded video and make searching for
events easier.
Figure 11.3f Setting video motion detection in AXIS Camera Station video management software.
Active tampering alarm
This intelligent video functionality, embedded in many Axis network video products, can be used
as an event trigger when a camera is manipulated in any way; for instance, through accidental
redirection, blocking, defocusing or being spray-painted, covered or damaged. Without such
detection, surveillance cameras can become of limited use.
11.3.6 Administration and management features
All video management software applications provide the ability to add and configure basic
camera settings, frame rate, resolution and compression format, but some also include more
advanced functionalities, such as camera discovery and complete device management. The
larger a video surveillance system becomes, the more important it is to be able to efficiently
manage networked devices.
CHAPTER 11 - VIDEO MANAGEMENT SYSTEMS
