Get passed license plate numbers using ISAPI

Otabek · Nov 13, 2024

Hello,

I use Hikvision iDS-2CD7A26G0/P-IZHS IP Camera. I did following to get list of passed license plates but it is not giving expected result. I hoped first item in the list would begin from 2024-11-01. But I get today's list.

Please tell me what to do. Thanks in advance.

trempa92 · Nov 13, 2024

You have 2 additional zeros which arent needed. hhmmss thats 6 digit for time. you have 8

trempa92 · Nov 13, 2024

I would highly suggest using Alarm server and parsing real time data and storing to some database.

Otabek · Nov 13, 2024

trempa92 said:
You have 2 additional zeros which arent needed. hhmmss thats 6 digit for time. you have 8

Thanks for your response. I've removed 2 additional zeros. But still getting unexpected result.

Otabek · Nov 13, 2024

trempa92 said:
I would highly suggest using Alarm server and parsing real time data and storing to some database.

That sounds like a fantastic idea! I would love to implement it, but I'm not entirely sure where to start. If you wouldn’t mind, could you guide me through the process? I’d really appreciate any help you could offer. Thank you so much in advance!

trempa92 · Nov 14, 2024

Its fairly simple. Lets start with steps:

1. Create a TCP server listener on your server ip address and desired port. I use 9091 does not need to be 80

Basic Listener without parsing

2. Log in to your camera and navigate to Alarm settings
3. Under Server Alarm add ip address of your TCP server listener and port
4. ANR option is optional. This means that if event wasnt handled by server, camera will repeat the same event until server actually said OK. So if you have ANR enabled, on each event you need to send response bytes:
string responseString = "HTTP/1.1 200 OK\r\nContent-Length: 0\r\n\r\n";

5.Once you start receiving events you then parse the data. The data is multipart, meaning it contains XML data depending on vehicle pass and all the information + images. Images are byte array that you can parse and save.
6. Each event you parse, store to database table such as LPRevents.

Thats about it. now you have database of passes which you can pull up anytime you want without interacting and relaying on camera itself.

Otabek · Nov 14, 2024

trempa92 said:
Its fairly simple. Lets start with steps:

1. Create a TCP server listener on your server ip address and desired port. I use 9091 does not need to be 80

Basic Listener without parsing

View attachment 207233

2. Log in to your camera and navigate to Alarm settings
3. Under Server Alarm add ip address of your TCP server listener and port
4. ANR option is optional. This means that if event wasnt handled by server, camera will repeat the same event until server actually said OK. So if you have ANR enabled, on each event you need to send response bytes:
string responseString = "HTTP/1.1 200 OK\r\nContent-Length: 0\r\n\r\n";

5.Once you start receiving events you then parse the data. The data is multipart, meaning it contains XML data depending on vehicle pass and all the information + images. Images are byte array that you can parse and save.
6. Each event you parse, store to database table such as LPRevents.

Thats about it. now you have database of passes which you can pull up anytime you want without interacting and relaying on camera itself.

I configured IP camera and started listening from the specified port. But unfortunately License Plate number is not being received through the socket.

trempa92 · Nov 14, 2024

Otabek said:
I configured IP camera and started listening from the specified port. But unfortunately License Plate number is not being received through the socket.
View attachment 207239 View attachment 207238

Change recognition type to LicencePlate & Vehicle not just Vehicle.
Sometimes you may receive unknown if it couldnt read, but generally only in 2% of cases

trempa92 · Nov 14, 2024

Also i noted you have ANR enabled, all the listener apps wont work with it. It will just loop the 1st event it got. Since it does not responds with OK 200 back to camera.

Disable ANR temporary to catch other events.

Otabek · Nov 14, 2024

trempa92 said:
Also i noted you have ANR enabled, all the listener apps wont work with it. It will just loop the 1st event it got. Since it does not responds with OK 200 back to camera.

Disable ANR temporary to catch other events.

ANR has been disabled. Detection mode were 'License Plate & Vehicle':

But License Plate No is not being received:

trempa92 · Nov 14, 2024

What is the firmware on your camera?

Recently i upgraded my test camera to 5.8.60 and still works as it should

Otabek · Nov 14, 2024

trempa92 said:
What is the firmware on your camera?

Recently i upgraded my test camera to 5.8.60 and still works as it should

The firmware of my camera is 'V5.8.60 build 240807':

trempa92 · Nov 14, 2024

This is how my listener receives the data:

XML:

POST / HTTP/1.1
Content-Type: multipart/form-data; boundary=boundary
Host: 192.168.2.107:9091
Connection: close
Content-Length: 776357

--boundary
Content-Disposition: form-data; name="anpr.xml"; filename="anpr.xml"
Content-Type: text/xml
Content-Length: 3059

<?xml version="1.0" encoding="UTF-8"?>
<EventNotificationAlert version="2.0" xmlns="http://www.hikvision.com/ver20/XMLSchema">
<ipAddress>192.168.2.46</ipAddress>
<portNo>9091</portNo>
<protocol>HTTP</protocol>
<macAddress>bc:9b:5e:b3:66:5d</macAddress>
<channelID>1</channelID>
<dateTime>2023-11-02T21:10:32+08:00</dateTime>
<activePostCount>1</activePostCount>
<eventType>ANPR</eventType>
<eventState>active</eventState>
<eventDescription>ANPR</eventDescription>
<channelName>Camera 01</channelName>
<ANPR>
<country>19</country>
<licensePlate>ZG6140G</licensePlate>
<line>1</line>
<direction>forward</direction>
<confidenceLevel>100</confidenceLevel>
<plateType>unknown</plateType>
<plateColor>unknown</plateColor>
<licenseBright
>0</licenseBright>
<dangmark>no</dangmark>
<twoWheelVehicle>no</twoWheelVehicle>
<threeWheelVehicle>no</threeWheelVehicle>
<plateCharBelieve>99,99,99,99,99,99,99</plateCharBelieve>
<vehicleType>vehicle</vehicleType>
<detectDir>8</detectDir>
<detectType>0</detectType>
<alarmDataType>0</alarmDataType>
<vehicleInfo>
<index>405</index>
<colorDepth>2</colorDepth>
<color>gray</color>
<length>0</length>
<vehicleLo
goRecog>1134</vehicleLogoRecog>
<vehileSubLogoRecog>0</vehileSubLogoRecog>
<vehileModel>0</vehileModel>
</vehicleInfo>
<pictureInfoList>
<pictureInfo>
<fileName>licensePlatePicture.jpg</fileName>
<type>licensePlatePicture</type>
<dataType>0</dataType>
<picRecogMode>0</picRecogMode>
<absTime>20231102211032591</absTime>
<pId>2023110221103333400Eqh1QVsXguPWo</pId>
</pictureInfo>
<pictureInfo>
<fileName>vehiclePicture.jpg</fileName>
<type>vehiclePicture</type>
<dataType>0</dataType>
<picRecogMode>0</picRecogMode>
<absTime>20231102211032591</absTime>
<plateRect>
<X>448</X>
<Y>406</Y>
<width>117</width>
<height>40</height>
</plateRect>
<pId>2023110221103333400dMbnmyWOBEl9E</pId>
</pictureInfo>
<pictureInfo>
<fileName>detectionPicture.jpg</fileName>
<type>detectionPicture</type>
<dataType>0</dataType>
<picRecogMode>0</picRecogMode>
<absTime>20231102211032591</absTime>
<plateRect>
<X>448</X>
<Y>406</Y>
<width>117</width>
<height>40</height>
</plateRect>
<pId>2023110221103333400F
2DLcGhtwvQgq</pId>
</pictureInfo>
</pictureInfoList>
<originalLicensePlate>ZG6140G</originalLicensePlate>
<CRIndex>19</CRIndex>
<vehicleListName>otherList</vehicleListName>
<plateCategory></plateCategory>
<plateSize>0</plateSize>
</ANPR>
<UUID>2023110221103333200phCHLeHslaDArysAvVOz5HhA01u9tYrAz9UphtSwRP8c</UUID>
<picNum>3</picNum>
<monitoringSiteID></monitoringSiteID>
<isDataRetransmission>false</isDataRetra
nsmission>
<DeviceGPSInfo>
<longitudeType>E</longitudeType>
<latitudeType>N</latitudeType>
<Longitude>
<degree>0</degree>
<minute>0</minute>
<sec>0.000000</sec>
</Longitude>
<Latitude>
<degree>0</degree>
<minute>0</minute>
<sec>0.000000</sec>
</Latitude>
</DeviceGPSInfo>
<detectionBackgroundImageResolution>
<height>1328</height>
<width>1920</width>
</detectionBackgroundImageResolution>
</EventNotificationAlert>

--boundary
Content-Disposition: form-data; name="licensePlatePicture.jpg"; filename="2023110221103333400Eqh1QVsXguPWo.jpg"
Content-Type: image/jpeg
Content-Length: 5008

     JFIF         C

And it keeps going for image bytes,...

I wouldnt rely on done listeners, create your own.

Otabek · Nov 14, 2024

trempa92 said:

This is how my listener receives the data:

XML:

POST / HTTP/1.1
Content-Type: multipart/form-data; boundary=boundary
Host: 192.168.2.107:9091
Connection: close
Content-Length: 776357

--boundary
Content-Disposition: form-data; name="anpr.xml"; filename="anpr.xml"
Content-Type: text/xml
Content-Length: 3059

<?xml version="1.0" encoding="UTF-8"?>
<EventNotificationAlert version="2.0" xmlns="http://www.hikvision.com/ver20/XMLSchema">
<ipAddress>192.168.2.46</ipAddress>
<portNo>9091</portNo>
<protocol>HTTP</protocol>
<macAddress>bc:9b:5e:b3:66:5d</macAddress>
<channelID>1</channelID>
<dateTime>2023-11-02T21:10:32+08:00</dateTime>
<activePostCount>1</activePostCount>
<eventType>ANPR</eventType>
<eventState>active</eventState>
<eventDescription>ANPR</eventDescription>
<channelName>Camera 01</channelName>
<ANPR>
<country>19</country>
<licensePlate>ZG6140G</licensePlate>
<line>1</line>
<direction>forward</direction>
<confidenceLevel>100</confidenceLevel>
<plateType>unknown</plateType>
<plateColor>unknown</plateColor>
<licenseBright
>0</licenseBright>
<dangmark>no</dangmark>
<twoWheelVehicle>no</twoWheelVehicle>
<threeWheelVehicle>no</threeWheelVehicle>
<plateCharBelieve>99,99,99,99,99,99,99</plateCharBelieve>
<vehicleType>vehicle</vehicleType>
<detectDir>8</detectDir>
<detectType>0</detectType>
<alarmDataType>0</alarmDataType>
<vehicleInfo>
<index>405</index>
<colorDepth>2</colorDepth>
<color>gray</color>
<length>0</length>
<vehicleLo
goRecog>1134</vehicleLogoRecog>
<vehileSubLogoRecog>0</vehileSubLogoRecog>
<vehileModel>0</vehileModel>
</vehicleInfo>
<pictureInfoList>
<pictureInfo>
<fileName>licensePlatePicture.jpg</fileName>
<type>licensePlatePicture</type>
<dataType>0</dataType>
<picRecogMode>0</picRecogMode>
<absTime>20231102211032591</absTime>
<pId>2023110221103333400Eqh1QVsXguPWo</pId>
</pictureInfo>
<pictureInfo>
<fileName>vehiclePicture.jpg</fileName>
<type>vehiclePicture</type>
<dataType>0</dataType>
<picRecogMode>0</picRecogMode>
<absTime>20231102211032591</absTime>
<plateRect>
<X>448</X>
<Y>406</Y>
<width>117</width>
<height>40</height>
</plateRect>
<pId>2023110221103333400dMbnmyWOBEl9E</pId>
</pictureInfo>
<pictureInfo>
<fileName>detectionPicture.jpg</fileName>
<type>detectionPicture</type>
<dataType>0</dataType>
<picRecogMode>0</picRecogMode>
<absTime>20231102211032591</absTime>
<plateRect>
<X>448</X>
<Y>406</Y>
<width>117</width>
<height>40</height>
</plateRect>
<pId>2023110221103333400F
2DLcGhtwvQgq</pId>
</pictureInfo>
</pictureInfoList>
<originalLicensePlate>ZG6140G</originalLicensePlate>
<CRIndex>19</CRIndex>
<vehicleListName>otherList</vehicleListName>
<plateCategory></plateCategory>
<plateSize>0</plateSize>
</ANPR>
<UUID>2023110221103333200phCHLeHslaDArysAvVOz5HhA01u9tYrAz9UphtSwRP8c</UUID>
<picNum>3</picNum>
<monitoringSiteID></monitoringSiteID>
<isDataRetransmission>false</isDataRetra
nsmission>
<DeviceGPSInfo>
<longitudeType>E</longitudeType>
<latitudeType>N</latitudeType>
<Longitude>
<degree>0</degree>
<minute>0</minute>
<sec>0.000000</sec>
</Longitude>
<Latitude>
<degree>0</degree>
<minute>0</minute>
<sec>0.000000</sec>
</Latitude>
</DeviceGPSInfo>
<detectionBackgroundImageResolution>
<height>1328</height>
<width>1920</width>
</detectionBackgroundImageResolution>
</EventNotificationAlert>

--boundary
Content-Disposition: form-data; name="licensePlatePicture.jpg"; filename="2023110221103333400Eqh1QVsXguPWo.jpg"
Content-Type: image/jpeg
Content-Length: 5008

     JFIF         C

And it keeps going for image bytes,...

I wouldnt rely on done listeners, create your own.

I also created socket server using Python:

import socket

IP_ADDRESS = '10.142.47.118'
PORT = 21

server_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

server_socket.bind((IP_ADDRESS, PORT))
print(f"Server is listening on {IP_ADDRESS}:{PORT}")

server_socket.listen(1)

while True:
client_socket, client_address = server_socket.accept()
print(f"Connected by {client_address}")

data = client_socket.recv(776357)
if data:
print("Received:", data.decode())

client_socket.close()

Here is the receiving data. But no any license plate number:

Connected by ('172.16.66.230', 59186)
Received: POST / HTTP/1.1
Content-Type: multipart/form-data; boundary=boundary
Host: 10.142.47.118:21
Connection: close
Content-Length: 1125

--boundary
Content-Disposition: form-data; name="TrafficFlow"
Content-Type: application/json
Content-Length: 990

{
"ipAddress": "172.16.66.230",
"portNo": 21,
"protocol": "HTTP",
"macAddress": "5c:34:5b:9e:c8:cc",
"channelID": 1,
"dateTime": "2024-11-15T08:46:54+05:00",
"activePostCount": 1,
"eventState": "active",
"channelName": "Kirish",
"eventType": "TPSRealTime",
"eventDescription": "traffic pass statistics real-time",
"Target": [{
"recognitionType": "vehicle",
"TargetInfo": {
"snapTime": "2024-11-15T08:46:54+05:00",
"totalLaneNum": 1,
"LaneInfo": [{
"laneNo": 1,
"volum": 100,
"downwardFlow": 99,
"upwardFlow": 1
}],
"speed": "unknown",
"vehicleType": "unknown",
"plateNo": "unknown"
}
}, {
"recognitionType": "motorcycle",
"TargetInfo": {
"snapTime": "2024-11-15T08:46:54+05:00",
"totalLaneNum": 1,
"LaneInfo": [{
"laneNo": 1,
"volum": 0,
"downwardFlow": 0,
"upwardFlow": 0
}],
"speed": "unknown",
"vehicleType": "unknown",
"plateNo": "unknown"
}
}]
}
--boundary--

trempa92 · Nov 15, 2024

What you are getting is not ANPR event, you are getting TPSRealTime event which is vehicle counter not ANPR.
Factory restore and try again if you upgraded firmware.

Otabek · Nov 16, 2024

trempa92 said:
What you are getting is not ANPR event, you are getting TPSRealTime event which is vehicle counter not ANPR.
Factory restore and try again if you upgraded firmware.

PUT /ISAPI/Event/notification/httpHosts/1

Authorization
Digest Auth
username: admin
password: password

Headers
Content-Type: application/xml

Body
raw, XML:
<HttpHostNotification version="2.0" xmlns="

http://www.hikvision.com/ver20/XMLSchema

">
<id>1</id>
<url></url>
<protocolType>HTTP</protocolType>
<parameterFormatType>XML</parameterFormatType>
<addressingFormatType>ipaddress</addressingFormatType>
<ipAddress>10.142.47.118</ipAddress>
<portNo>22</portNo>
<userName></userName>
<httpAuthenticationMethod>none</httpAuthenticationMethod>
<httpBroken>true</httpBroken>
<ANPR>
<detectionUploadPicturesType opt="all, licensePlatePicture, detectionPicture">all</detectionUploadPicturesType>
</ANPR>
</HttpHostNotification>

Thank you very much for your invaluable assistance Trempa92. Utilizing the provided API with Postman and changing settings has enabled me to successfully initiate ANPR notifications through a TCP Socket Server.

However, I have noticed that notifications are not triggered when the operator opens the barrier using the remote control. Could you kindly advise me on how to resolve this issue?

I greatly appreciate your guidance and support.

trempa92 · Nov 18, 2024

If you want to fetch manuqlly opened doors, connect barrier output to alarm input of camera

Otabek · Nov 21, 2024

trempa92 said:
If you want to fetch manuqlly opened doors, connect barrier output to alarm input of camera

Adjusting the following settings helped me achieve the expected result.

trempa92 · Nov 21, 2024

Thats for recieving events, upload to memorycard or FTP is not necesary.

Already got everything set for my integration to work as it should.

Get passed license plate numbers using ISAPI

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