Home » Ganz Security Manuals » Security Cameras » Ganz Security ZN1A-B4DMZ56U-1 » Manual Viewer

Ganz Security ZN1A-B4DMZ56U-1 GXi Series VCA Interface Manual - Page 92

Tamper Detection, Advanced Tamper Detection Settings, Suppress Alarm on Lights On/Off

View all Ganz Security ZN1A-B4DMZ56U-1 manuals

Add to My Manuals
Save this manual to your list of manuals

Page 92 highlights

Ganz GXi Series VCA Interface Manual V3.05.31.18 Tamper Detection The Tamper Detection module is intended to detect camera tampering events such as bagging, defocusing, moving the camera, etc. This is achieved by detecting large persistent changes in the image. The output of the tamper detection algorithm is displayed as red blocks on the image. The red area is where the algorithm has detected that the image has changed from its reference image. Once enough of the image has changed and remained so for a certain length of time, a tamper alarm is triggered. Note: To see the output of the tamper detection on the image, Tamper Debug metadata must be enabled on the VCA -> Advanced page. Please refer to Advanced Settings for more information. Advanced Tamper Detection Settings In the advanced tamper detection settings, it is possible to change the thresholds for the area of the image which must be changed and the length of time it must be changed for before the alarm is triggered. • Tampered Duration until Alarm: The length of time that the image must be persistently changed before the alarm is triggered. • Tampered Image Area: Percentage area of the image which must be changed for tampering to be triggered. If false alarms are a problem the duration and/or area should be increased so that large transient changes such as a close object temporarily obscuring the camera do not cause false alarms. Suppress Alarm on Lights On/Off Large fast changes to the image lighting such as switching on/off indoor lighting can cause false tamper alarms. Enable this option if this is likely to be a problem in the area where the camera is installed. However, this option will reduce sensitivity to genuine alarms, so it is not recommended if fast light changes are not likely to be a problem 05-2018-A 91 | P a g e

Section	Page
Introduction	9
Getting Started	10
VCA Feature Packages	10
Accessing VCA Configuration	11
Activation	11
Obtaining an Activation Code	12
Applying an Activation Code to a Unit	13
Switching VCA On and Off	14
Enable VCA	14
Object Tracking	14
Counting Line	14
Tracking Mode	14
Enabling Metadata Streaming	15
Configuration of Zones and Rules	16
Tracking Display	16
Properties Inspector	16
Event History	16
Customizing the Tracking Display	18
Display Blobs	18
Display Objects in Multiple Colors	18
Display Non-Alarmed Objects	18
Display Object Height	18
Display Object Speed	18
Display Object Area	18
Display Object Classification	19
Display Object Wait Time (VCApro only)	19
Display Object Color Signature (VCApro only)	19
Creating Detection Zones and Lines	19
Creating a Zone or Line	20
Editing Zones and Lines	20
Adding and Removing Nodes	21
Non-Detection Zones	22
Detection Rules	23
Object Presence	24
Object Direction	25
Object Enter and Exit	26
Object Appear and Disappear	27
Object Dwell	28
Object Stopped	29
Object Class	30
Object Tailgating	31
Object Tailgating Trigger	32
Object Speed	33
Object Color Filter	34
Counting Line	35
Enabling the Counting Line	35
Assigning Counters to Counting Lines	36
Calibrating the Counting Line	37
Shadow Filter	37
Calibration Diagnostics Mode	38
Camera Calibration	39
Camera Calibration Topics:	39
Calibration Page Elements	39
3D Graphics Overlay	39
Mouse controls	39
Other Graphical Tools	40
Horizon Display	40
Additional Mimics	40
Grid Transparency	40
Virtual Ruler	42
Calibrating a Camera	43
Step 1: Find some people in the scene	43
Step 2: Adjust tilt angle and camera height	44
Step 3: Verify the setup	45
Advanced Calibration Parameters	46
Vertical Field of View	46
Measurement Units	47
Object Classification	47
Logical Rules	48
Adding and Removing Logical Rules	48
Editing Logical Rule Clauses	49
Editing Logical Rule Actions	50
Clause Types	51
Rule Clause	51
Not Clause	51
Or Clause	52
And Clause	53
Before Clause	54
Within Clause	55
Identity Clause	56
Earliest Clause	57
Classification Clause	58
Proximity Clause	59
Was Clause	60
Previous Clause	60
Between Clause	61
Continuously Clause	61
Day Clause	62
Time Clause	62
Date Clause	63
Value Clause	63
Input Clause	64
Tamper Clause	64
Learning Clause	65
Action Types	65
Generate Events Action	65
Reset Counter Action	65
Trigger Scene Learning Action	65
Increment Counter Action	65
Counters	66
Creating Counters	66
Assigning Rules to Counters	67
Incremental Counters	67
Decremental Counters	67
Occupancy Counters	67
Counter Storage and Reporting	68
Counter Database Service	68
Enable Database Service	68
DB Storage	68
Total DB Size	69
Database Table Configuration	69
Sampling Interval	69
Roll-over Count	69
Max Roll-over Time	69
Clear	69
Backup	69
Restore	69
Counter Reporting Service	70
Tabular Reporting	70
Bar Graph Reporting	71
CSV Export	71
Predefined Requests	72
Command Request	72
Time	72
Counter ID	73
Table (Sampling)	73
Sorting Order	73
Value Type	74
Request	74
Request URI	74
Email Notification	74
Enable Email Notification	74
Adding a New Email Notification Recipient	75
Email Configuration	75
Name	75
Description	75
Email Address	75
Schedule Configuration	76
Current Device Time	76
Enable Hourly Report	76
Trigger Time	76
Weekday	76
Enable Daily Report	76
Trigger Time	77
Weekday	77
Enable Weekly Report	77
Trigger Day	79
Trigger Time	79
Enable Monthly Report	79
Trigger Day	80
Trigger Time	80
Report Configuration	80
Time	80
Report All Data	80
Time Range	80
Counter ID	81
Table (Sampling)	81
Sorting Order	81
Value Type	81
Format	81
Send Test Report	82
Importing Data into Microsoft Excel	84
Other Reports	86
Heatmap Reporting	86
Enabling the Heatmap Service	86
Generating Heatmap Images	86
Events Reporting	88
Configuring and Enabling the Service	88
Selecting a Time Interval	88
Filtering by Rules	88
Example CSV File	89
Description of CSV fields:	89
Tracks Reporting	90
Configuring and Enabling the Service	90
Selecting a Time Interval	90
Example CSV File	90
Description of CSV fields:	91
Tamper Detection	92
Advanced Tamper Detection Settings	92
Suppress Alarm on Lights On/Off	92
Scene Change Detection	93
Manual Scene Change Detection Settings	93
Day/Night Mode Change Detection Settings	94
Burnt-in Annotation	94
Zone Configuration	95
Object Configuration	95
Counter Configuration	95
System Configuration	95
Diagnostic Configuration	95
PTZ Profiles	96
PTZ Profiles Topics	96
PTZ Control Element	97
PTZ Control	97
PTZ Preset Control	97
VCA Profiles	98
Configure a PTZ Preset	98
Create VCA Profile	99
Delete VCA Profile	99
Disable PTZ Preset	99
PTZ Configuration and Auto-Tracking	100
PTZ General Configuration	100
Camera Preset Number for VCA Home Position	100
Enable VCA Only at Home Position	100
Return to Home Position Following Manual Override	100
PTZ Auto-tracking Configuration	101
Maximum Tracking Time	101
Maximum Hold-on Time	101
Allow Manual Override (User Control)	102
Auto-tracking Initiation	102
Importing & Exporting VCA Configuration	103
Exporting VCA Configuration	103
Importing VCA Configuration	103
Generating External Event Notifications	105
Advanced VCA Settings	107
Alarm Holdoff Time	107
Measurement Units	109
Metadata Format	109
Event	109
Object	109
Counting	109
Do not send empty metadata packets	109
Blob	109
Tamper Diagnostics	109
Counting Line Diagnostics	109
Scene Change Diagnostics	109
More Information	110
Stationary Object Hold-on Time	110
Tracking Options	110
Minimum Tracked Object Size	110
Display Options	110
Minimum Alarm Object Display Time	110
Minimum Object Display Time	110
Detection Point of Tracked objects	110
People Tracker	112
Installation	112
Calibration	113
An example of an incorrectly calibrated scene	113
An example of a correctly calibrated scene	114

Match case Limit results 1 per page

05-2018-A

Ganz GXi Series

VCA Interface Manual V3.05.31.18

91 |

P ag e

Tamper Detection

The Tamper Detection module is intended to detect camera tampering events such as bagging, de-

focusing, moving the camera, etc. This is achieved by detecting large persistent changes in the image.

The output of the tamper detection algorithm is displayed as red blocks on the image. The red area is

where the algorithm has detected that the image has changed from its reference image. Once enough of

the image has changed and remained so for a certain length of time, a tamper alarm is triggered.

Note: To see the output of the tamper detection on the image, Tamper Debug metadata must be enabled

on the VCA -> Advanced page. Please refer to Advanced Settings for more information.

Advanced Tamper Detection Settings

In the advanced tamper detection settings, it is possible to change the thresholds for the area of the

image which must be changed and the length of time it must be changed for before the alarm is triggered.

•

Tampered Duration until Alarm:

The length of time that the image must be persistently changed

before the alarm is triggered.

•

Tampered Image Area:

Percentage area of the image which must be changed for tampering to

be triggered.

If false alarms are a problem the duration and/or area should be increased so that large transient

changes such as a close object temporarily obscuring the camera do not cause false alarms.

Suppress Alarm on Lights On/Off

Large fast changes to the image lighting such as switching on/off indoor lighting can cause false tamper

alarms. Enable this option if this is likely to be a problem in the area where the camera is installed.

However, this option will reduce sensitivity to genuine alarms, so it is not recommended if fast light

changes are not likely to be a problem