The Settings panel of the Detection zone object

1

Identification number*

Automatically

Displays the identification number of the Detection zone object in the digital distributed video surveillance system.

Sequence of numbers

-

Depends on the number of Detection zone objects in the digital distributed video surveillance system.

2

Name*

Enter the value in the field

Defines the name of the Detection zone object in the digital distributed video surveillance system.

Latin, Cyrillic letters and service characters

Detection zone

A line containing a sequence of any symbols (letters, digits, service characters apart from > and < symbols), not case-sensitive.

Number of symbols – from 1 to 60.

3

Disable

Is identified by the check mark

Defines the condition of the Detection zone object (enabled or disabled) in the digital distributed video surveillance system.

Boolean type

Not available

Yes – the Detection zone is disabled and is not in use

No – the Detection zone object is enabled and is in use.

4

Camera

Is selected from the list

Defines the parent Camera object of the digital distributed video surveillance system, to which the given Detection zone object refers.

Name of the Camera objects registered in the system

Name of the parent Camera object.

Depends on the number of Camera objects in the digital distributed video surveillance system.

5

Detection

Is selected from the list

Is used to define the type of the detector in use.

List of the detectors in the system.

Motions

Motion

Focus

Stability

Background change

Blind

Cover

Infrared

6

Show

Is identified by the check mark

Defines the frame border in the observed scene.

This parameter is active only with the following detectors selected from the Detector list: motion, infrared.

Boolean type

No

Yes – the object border is displayed in the observed scene.

No – the object border is not displayed in the observed scene.

7

Alarm

Is identified by the check mark

Enables alarm generation on camera and automated recording of the video signal from the camera with the alarm received from the selected detector.

Boolean type

Not available

Yes – alarm on camera is generated and automated recording of the video signal is performed on alarm received from the selected detector.

No – alarm is not generated and automated recording of the video signal is not performed on the alarm received from the selected detector.

8

Armed always

Is identified by the check mark.

Defines the condition of the selected detector as Always armed.

Boolean type

Not available

Yes – the detector should always be armed.

No – the operator may disarm the detector.

9

Sensitivity

Set the slide in the required position.

The function depends on the type of the selected detector:

Motion detection tool

The value of this parameter corresponds to the minimum value of the averaged brightness of the moving object, at which the detection tool will trigger only act at its motion, and not at the video signal noise (including snow, rain, etc.). The HIGHER the sensitivity value, the more sensitive the detection tool is.

Focus detection tool
The value of this parameter characterizes the minimum degree of accuracy loss, expressed in the difference between the average number of outlines and the number of outlines in the incoming frame at which the detection tool should trigger.

Video signal stability detection tool

The value of this parameter characterizes the minimum degree of reduction in the resolution of the frame, expressed in the difference between the average number of outlines and the number of outlines in the incoming frame at which the detection tool should trigger.

Background change detection tool

This parameter characterizes the deviation of the integral brightness of the frame from the average value at which the detection tool should trigger.

Camera blinding detection tool

This parameter corresponds to the rate of illumination of the video expressed in the difference between the positions of medians of the brightness chart of the incoming frame and the reference illumination frame at which the detection tool should trigger.

Cover detection tool

This parameter corresponds to the rate of narrowing of the brightness chart of the frame, i.e. estimation of the frame filling with gray color, at which the detection tool should trigger.

Infrared detection tool

The value of this parameter corresponds to the minimum value of the averaged brightness of the moving object, at which the detection tool will trigger at its motion.

-

Average

-

10

Contrast

Set the slide in the required position.

Specifies the minimum contrast of the object at which the detection tool triggers at its motion. The HIGHER the specified contrast value, the more different the neighboring b/w pixels should be, so that the detection tool considers them as different objects.

Is not applicable for all detector types.

-

Average

-

11

Filter

Set the slide in the required position.

Motion detection tool, Infrared detection tool

The value of this parameter corresponds to the threshold of color processing of objects, at which the detection tool should trigger. The HIGHER the filtering, the more different the neighboring pixels should be, so that the detection tool considers them as different objects.

Background change detection tool, video signal stability detection tool

The value of this parameter corresponds to the contrast threshold of the detected object.

Is not applicable for all detector types.

-

Minimal

-

12

Size

Set the slide in the required position.

The value of this parameter corresponds to the minimum size of the detection object relatively to the frame sizes.

Is not applicable for all detector types.

-

Average

-

13

Direction of search*

Press the arrow buttons.

Defines the direction of search for the motion detector.

8 possible directions to follow an object within the frame.

All directions are selected: up, down, to the left, to the right, up and to the left, up and to the right, down and to the left, down and to the right.

Up, down, to the left, to the right, up and to the left, up and to the right, down and to the left, down and to the right.

14

Delay between MD_INFO (ms)

Enter value in the field

Sets the delay in milliseconds between MD_INFO events from the CAM_ZONE object in the Event Viewer (if MD_INFO event is enabled in ddi).

Non-negative integer

0 (not set)

>=0

Video signal stability detection tool

Sets the threshold of the absolute difference between the brightness of the pixel in the current frame (taking into account the stabilization of brightness) and the background

Video signal stability detection tool

Sets the maximum permissible percentage of the stabilized frame pixels that differ from the background by more than the value in the Stability detection sensitivity. When exceeded, the alarm verification process starts.

Video signal stability detection tool

Sets the maximum permissible percentage of the stabilized frame pixels that differ from the background by more than the value in the Stability detection sensitivity. When exceeded, the frame ceases to be used for background model.

Video signal stability detection tool

Sets the time period in seconds during which the Upper stability limit must be exceeded to generate an alarm