Aras HikVision ANPR DS-2CD4A26FWD-IZSWG-P User manual

Quick Guide
HikVision ANPR Camera - DS-2CD4A26FWD-IZSWG-P
Configuration of Automatic Number Plate Recognition (ANPR) via WEB
Version
Ændring
Udført af
1.0 Første version Jasper Johansen
1.1 Mindre korrektioner

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Table of Contents
1. Introduction .................................................................................. 3
2. Web Configuration ........................................................................ 3
2.1 Detection configuration.................................................................. 4
2.2 Uploaded Picture Configuration ......................................................11
2.3 (Optional) Overlay Content Configuration........................................13
2.4 Real-time LPR (License Plate Reading) Result ..................................13
3. Result Query................................................................................15
4. Parameter Recommendation .......................................................16
4.1 Exposure Settings ........................................................................16
4.2 Day/Night Switch.........................................................................17
4.3 Backlight Settings ........................................................................19
5. FAQ ..............................................................................................19
5.1 License Plate Tilt Angle .................................................................20
5.2 Depth of focus .............................................................................21
5.3 Lighting ......................................................................................22
5.4 License plate width ......................................................................23
5.5 Low sharpness.............................................................................23
5.6 Insufficient light ..........................................................................24
5.7 High Exposure Time .....................................................................24
6. Supported Countries.....................................................................25

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1. Introduction
Using this camera, you can easily monitor road traffic, both vehicles passing by
and vehicles stopping to enter a designated zone. The vehicle detection detects
passing vehicles and captures the license plates. The detection triggers a series
of actions, such as notifying the surveillance center, uploading the captured
picture to a FTP server. Connected to a NOX system via the Wiegand interface,
the license plate will be converted to a card number and can be used for
access control.
2. Web Configuration
Use the SADPTool (https://www.hikvision.com/en/Support/Downloads/Tools)
to setup IP-address and password. Login to the IP Camera (IPC) via a web
browser (e.g. Internet Explorer) and make sure the firmware version supports
ANPR. Preferably use the Firmware version: V5.4.5 build 171222 –
downloadable through our website here:
https://www.aras.dk/Files/Filer/Downloads/Værktøjer/FF_R3_EN_STD_5.4.5_1
71222_CAR_72bit.zip
Figure 1 - Updating the firmware

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2.1 Detection configuration
1. Video Content Analysis (VCA) must be setup to the intended use to get the
best performance. Two modes of VCA resource allocation are supported:
•Smart Event
•Vehicle detection
Go to Configuration > Advanced Configuration > System > VCA Resource
Select Vehicle detection as the VCA resource and reboot the device to
activate the new setting.
NOTE.
When Smart Event is enabled the Vehicle Detection function is disabled.
When Vehicle detection is enabled, high framerate, recording on SD card,
certain smart events and people counting are not supported.
Figure 2 - VCA Resource Allocation.
2. Then go to the Advanced Configuration > Road Traffic option. Select the
detection type from the list and enable the selected detection function.
Vehicle Detection can be selected here.

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Figure 3 - Enable Vehicle Detection.
3. Then Select the number of lanes and your region in the corresponding
dropdown list. Up to 4 lanes and three kinds of regions are selectable.
Figure 4 - Select number of lanes and Region.

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4. Click and drag the lane line to set the position or click and drag the end of
the line to adjust the length and angle. The area surrounded by yellow and
green lines stands for the detection area or the area of interest.
NOTE.
Only 1 license plate can be captured at the same time for each lane.
5. For high accuracy rate, it is necessary to set the maximum and minimum
size of the license plates.
•Manually take a snapshot with the camera when the license plate
appears in the detection area, and then measure the width in
pixels as shown in figure 4.
Figure 5 - How to measure a license plate pixel width using the Windows program Paint.
•Set the license plate width parameters.

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Figure 6 - License Plate Region Settings
EU Region (and Universal region):
•Minimum acceptable plate width:130 pixel, or 70 pixels for two-row
plates.
•Maximum plate width: should be at least 2x minimum plate width and
not exceed 3x minimum plate width.
CIS Region:
•Minimum acceptable plate width:150 pixel, or 100 pixels for two-row
plates.
•Maximum plate width: should be at least 2x minimum plate width and
not exceed 3x minimum plate width.
6. Select mode of vehicle detection in the dropdown list.
Figure 7 - Vehicle Detection Mode Settings.
City Street:
The license plate information will be uploaded after vehicle leaves the
detection area.
Entrance/Exit:
The license plate information will be uploaded as soon as the vehicle is
detected.

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Custom:
You can set the time interval between detecting vehicle and uploading of
the license plate information. The interval should be in the range between
0ms to 15000ms.
Figure 8 - Time Interval Settings.
7. (Optional) Arming Schedule is set to 24/7 (always on) by default and can
be modified if necessary.
Figure 9 - Arming Schedule Configuration

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After setting the arming schedule, click the Copy button to copy the
schedule to other days. Click the OK button to save the settings.
Figure 10 - How to copy the Arming Schedule.
Note. The time of each period cannot overlap.
8. (Optional) Set the Linkage Method.
By default the Triggering Source is checked to include All (Whitelist,
Blacklist and Other). You can also uncheck All and select a source in the
dropdown list.
Figure 11 - Triggering Source Configuration

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Notify Surveillance Center is checked by default and other linkage
methods such as Upload to FTP, and Trigger Alarm Output can be
selected.
Figure 12 - Notify Surveillance/Upload to FTP Configuration
Notify Surveillance Center:
Send an exception or alarm signal to remote management software when
an event occurs.
Upload to FTP:
Save pictures directly to a FTP server. After checking the Upload to FTP
box, you have to setup the FTP server information on the camera.

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Figure 13 - Configuring FTP server information on the camera
9. Click the Save button to activate the settings.
2.2 Uploaded Picture Configuration
1. Set the picture quality. Either Picture Quality or Picture Size can be set
to specify the picture quality.
2. (Optional) Enable and edit the text overlay on the uploaded picture
3. Select the information for the text overlay by checking the boxes (Camera
no., Camera info, Device No., Capture Time, Plate No.). You can also
click the up and down arrows to adjust the sequence of the text.

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Figure 14 - Uploaded Picture Configuration
4. (Optional) Select Custom to set the Picture Name. Here you select
which information should be included in the text overlay, including Capture
Time, Plate No., Alarm Type and Camera Name.
Use the arrows to adjust the sequence.
Figure 15 - Picture Name Configuration

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5. Click Save to save the Picture settings.
2.3 (Optional) Overlay Content Configuration
1. Edit the content of the Device No., Camera No. and Camera Info in the
corresponding text fields.
2. Click the Save button to activate settings.
Figure 16 - Overlay Content Configuration
2.4 Real-time LPR (License Plate Reading) Result
Go to Real-time LPR Result to see real-time captured license plate pictures
and information, including Capture Time, Plate No., Captured Picture,
Country, Lane and Direction.

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Figure 17 - Real-time LPR Result

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3. Result Query
Go to Playback > Download pictures and select the Vehicle Detection option.
Here you can search for license plate pictures and information on the SD card.
Figure 18 - Search for License Plate Pictures
Figure 19 - Search Results

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4. Parameter Recommendation
To get the best performance, you need to set the suitable image parameters.
For ANPR, you can select Road in the Mounting Scenario dropdown list to
set the suitable ANPR parameters automatically.
Figure 20 - Mounting Scenario Setting
You can also set the parameters manually.
Here are some parameter recommendations.
4.1 Exposure Settings
•Iris Mode: Auto
•Auto Iris Level: 50
•Exposure Time: 1/1000
•Gain: 20

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For Exposure Time (shutter time), too long exposure time may make the
moving license plate fuzzy. Here are some recommended exposure time
settings:
Entrance/Exit: Low speed (<30m/h). Exposure time: 1/150-1/200
Street: Medium speed (30-60kmh/h). Exposure time: 1/250-1/500
Road: High speed (<60km/h). Exposure time: 1/500-1/1000
For Gain, to ensure high recognition rate:
-When WDR is set to OFF, gain level should be set to less than 30.
-When WDR is set to ON, gain level should be set to less than 50.
4.2 Day/Night Switch
•Day/Night Switch: Auto
•Sensitivity: 4
•Filtering Time: 5
•Smart IR: ON
•Mode: Auto

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For Day/Night Switch, you can select the appropriate mode in the dropdown
list according to the environment.
•Day: The camera stays on day mode.
•Night: The camera stays on night mode.
•Auto: The camera switches between day mode and night mode
according to the illumination automatically.
•Schedule: Set the start time and the end time to define the duration for
day/night mode.
•Triggered by alarm input: The mode is triggered by alarm input and
you can set the triggered mode to day or night.
•Triggered by video: The camera switches between the day mode and
the night mode according to the video brightness automatically.

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4.3 Backlight Settings
•BLC Area: OFF
•WDR: OFF
5. FAQ
The troubleshooting flowchart is like this:

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5.1 License Plate Tilt Angle
Solution: Notice the license plate tilt angle. License plate tilt angle must be
within +/- 5 degrees.