Configuration Guide

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Thermal VCA Configuration guidance 
Contens 
Thermal VCA Configuration guidance .......................................................................................................1 
Chapter 1 VCA better performance configuration suggestions ..................................2 
1. Max Distance of VCA Trigger Alarm .......................................................................................2 
2. VCA Main Configuration Recommendation .......................................................................2 
Chapter2 VCA Common Issues troubleshooting and solutions ...................................7 
【False Alarm】 ..........................................................................................................................................7 
1.  Unmathed target box caused false alarm .......................................................................7 
2.  Animal false alarm from near side .......................................................................................8 
3.  Random box false alarm ...........................................................................................................8 
4.  Device shaking false alarm ......................................................................................................9 
【Missing Alarm】 .................................................................................................................................. 10 
1.  Low temperature difference ................................................................................................. 10 
2.  Narrow Scene missing alarm ............................................................................................... 10 
 
 
 
 
In order to ensure better VCA detection effect and fast delivery in thermal 
perimeter project, this document mainly introduces following two parts: 
1.  VCA better performance configuration suggestions 
2.  VCA Common Issues troubleshooting and solutions   

Summary of content (12 pages)

PAGE 1
Thermal VCA Configuration guidance Contens Thermal VCA Configuration guidance .......................................................................................................1 Chapter 1 VCA better performance configuration suggestions ..................................2 1. Max Distance of VCA Trigger Alarm .......................................................................................2 2. VCA Main Configuration Recommendation ...................................................................
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Chapter 1 VCA better performance configuration suggestions 1. Max Distance of VCA Trigger Alarm Ensure that the VCA rules are drawn within the max VCA alarm trigger distance of the device.
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Figure 1 3 Segmental rules b) It is suggested that the detection targets can be selected as Human & Vehicle under each rule. Note: The algorithm will outputs the target box as human directly without classification for targets < 10*10 in default distant view, so the selection of this item will not bring the false alarm and missing alarm.
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Figure 3 Rule 2 Configuration c) Set the Max Size and Min Size according to the rules in different distances. Figure 4 Pixel Filter for different rules The reason for segmental rules configuration: The deep learning algorithm classification needs at least 10*10 pixels like as focal length *3 meters. If target smaller than this size, it make precise classification difficultly. So it needs to enable the pixel filter for each rules.
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Figure 5 Pixel filter for animals Figure 6 Pixel filter for animals 2）It can refer to the real target in the scene to draw the size, and make sure 1.2 times redundancy of Min.Size and Max.Size. d）VCA Info display： Figure 7 VCA Info Display 1. Select display VCA Info by Player if VCA Info shows in IE or iVMS-4200.
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Meanwhile enable the rule info in local configuration page. Figure 9 Enable the rule info display 2. If VCA Info need to be displayed on the third-party platform or local GUI of NVR, you can select display VCA Info by video.
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Chapter2 VCA Common Issues troubleshooting and solutions Note：Make sure upgrade the latest firmware and camera module firmware to the device. You can contact with regional technical support team for latest firmware. 【False Alarm】 1. Unmathed target box caused false alarm Phenomenon: False alarm caused by bigger target box than real target. Figure 11 Target box mismatches the real small target Solution: a. Contact with HQ support to obtain the fixed firmware. b.
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2. Animal false alarm from near side Phenomenon: Animal with obvious features still occurs false alarm. Figure 12 Animal false alarm in near side Solution: a. Enable the pixel filter to avoid the animal false alarm with the height of Min.Size. b．Meanwhile collect more samples for training. 3. Random box false alarm Phenomenon: False alarm caused by Random box without real targets. And cannot all reduced by pixel filter.
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Figure 13 Random Box Solution: Contact with HQ support to obtain the fixed firmware. 4. Device shaking false alarm Phenomenon: False alarm caused by device shaking when there is heavy wind. The algorithm will generate the target box when device shaking, and cannot distinguish the real target normally.
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Solution: a．Make sure mounting the device firmly. Note: This false alarm cannot reduced by configuration. 【Missing Alarm】 1. Low temperature difference Phenomenon: The device can’t detect the human box especially environment temperature is similar as human body. Figure15 Thermal low temperature difference View Figure16 Optical View Solution: Please contact regional technical support to collect the raw data, then R&D will do further checking. Note：It’s decided by thermal image principle.
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Phenomenon： Targets pass the line quickly in the narrow scene, failing to generate target box in time and no alarm. Figure 17 Narrow Scene Solution： a． Set the line crossing and intrusion together. Due to intrusion rule can detect the alarm even the target box generating within the area. Figure 18 Rule adjustment for narrow scene b． Decrease the axis movement value to 1, make the target generation easily.
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Figure 19 Optical-Axis Movement configuration c． Increase the detection sensitivity of Line Crossing and intrusion rules to 70. It can be further adjusted according to actual test.