American Dynamics VideoEdge User Manual download pdf (Page 131)

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Motion Detection

Overview

The NVR provides server-based motion detection for all cameras. Hardware-based (camera-

based) Motion Detection is not supported by the NVR. The NVR supports two motion detection

features:

• Motion Search - a victor Client can search recorded video for motion.

• Motion Alerts - you can define Motion detection settings th

at can be used to set up motion

detection rules. When a new camera is added to the NVR, a motion detection alert is

automatically created with a full-view region. The name of this alert will be called “Full View”.

The Motion Detection settings allow

you to define the parameters which will initiate an alarm. This

will reduce the number of unwanted alarm events and is achieved using the following tools:

• Duration settings allowing you to define the time period of act

ivity in the region of interest to

activate an alarm.

• Direction settings allowing you to define the direction of motion required to activate an alarm.

• Size expressed as the minimum percent

age of the region of interest with activity required before

activating an alarm.

Motion Detection provides useful information only if re

cording is enabled on the camera. Your

camera recording status should be set to either Only Record on Alarm or Recording Always with

Alarm On. For further information on camera recording modes refer to Procedure 8-11 Setting the

Camera Recording Status on page 107.

Motion Detection events will create entries in the

victor site manager database. If required you can

use the Reports feature in victor unified client to retrieve event information.

Motion Detection Best Practices

To ensure you get the highest quality results when using Motion Detection on the NVR it is

recommended that you adhere to the following:

• An object exhibiting motion needs to be at le

ast 8x8 pixels in size to be detected.

• The color of the object (in grayscale) should be approximately 10-15% different than the

ckground.

• The frame rate of the video should be high enough to

capture the object in one or more captured

frames.

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American Dynamics VideoEdge User Manual Page 131