# Driving license identification
Interface should be called on the server side, not in the front end (Weixin Mini Program, web pages, APP, etc.) directly called, specific reference interface call guide
Interface English name: drivingocr
OCR Identification of Motor Vehicle License Information
# 1. How to call
# HTTPS calls
POST https://api.weixin.qq.com/cv/ocr/driving?access_token=ACCESS_TOKEN&img_url=IMG_URL
# Cloud Calls
Call method: ocr.drivingLicense
The input and exit parameters are the same as the HTTPS call, which can be called in the cloud call documentation
# Third party invocation
This interface supports Third Party Platform generation business call.
The permission set to which this interface belongs is id: 117
When a service provider is authorized by one of the permissions set, it can call on behalf of the merchant by using authorizer_access_token , which can be viewed in the third-party call documentation.
# 2. Request parameters
# Query parametersQuery String parameters
Parameter Name | type | Required to fill in | Example | Introductions |
---|---|---|---|---|
access_token | string | yes | ACCESS_TOCKEN | Interface invocation credentials, using access_token , authorizer_access_token |
img_url | string | no | ENCODE_URL | To detect the image url, pass this without passing the img parameter. |
# Request BodyRequest Payload
Parameter Name | type | Required to fill in | Introductions |
---|---|---|---|
img | formdata | yes | Form-data in the media file identification, filename, filelength, content-type and other information, you do not need to pass this img_url. |
# 3. Return Parameters
# Response Payload
Parameter Name | type | Introductions |
---|---|---|
errcode | number | Error code |
errmsg | string | Error message |
plate_num | string | The license plate number |
vehicle_type | string | Type of vehicle |
owner | string | All of us |
addr | string | address |
use_character | string | Properties of use |
model | string | Brand Model |
vin | string | Vehicle identification code |
engine_num | string | Engine number |
register_date | string | Date of registration |
issue_date | string | Date of issue |
plate_num_b | string | The license plate number |
record | string | license plate |
passengers_num | string | Authorized loading capacity |
total_quality | string | Total quality |
prepare_quality | string | Spare quality |
# 4. Note
- Support for authenticated subscription number, Service Account, Weixin Mini Program, Service Account can be directly called, the number is limited to 100 times / day.If there is a higher amount of call demand, you can go to service platform for purchase.
- Tips This interface is used as the background interface, which can be based on its own business carrying situation,Used together with Weixin Mini Program photography, album selection, etc., it can complete the process of photo collection, upload, identification, information return, etc. for business scenarios that require physical cards or certificates such as ID card or bank card to collect photos or text information.
- Image caption File size limit: less than 2 M
- Image support using img parameter real-time upload, also support using img_url parameter transfer image address, by WeChat background download image recognition.There are two types of type
# 5. Code examples
# 5.1 Request to upload a file
Example Requests
curl -F 'img=@test.jpg' "https://api.weixin.qq.com/cv/ocr/driving?access_token=ACCESS_TOCKEN"
Return an example
{
"errcode": 0,
"errmsg": "ok",
"plate_num": "粤xxxxx", //车牌号码
"vehicle_type": "小型普通客车", //车辆类型
"owner": "东莞市xxxxx机械厂", //所有人
"addr": "广东省东莞市xxxxx号", //住址
"use_character": "非营运", //使用性质
"model": "江淮牌HFCxxxxxxx", //品牌型号
"vin": "LJ166xxxxxxxx51", //车辆识别代号
"engine_num": "J3xxxxx3", //发动机号码
"register_date": "2018-07-06", //注册日期
"issue_date": "2018-07-01", //发证日期
"plate_num_b": "粤xxxxx", //车牌号码
"record": "441xxxxxx3", //号牌
"passengers_num": "7人", //核定载人数
"total_quality": "2700kg", //总质量
"prepare_quality": "1995kg" //整备质量,
"overall_size": "4582x1795x1458mm" //外廓尺寸,
"card_position_front": {//卡片正面位置(检测到卡片正面才会返回)
"pos": {
"left_top": {
"x": 119,
"y": 2925
},
"right_top": {
"x": 1435,
"y": 2887
},
"right_bottom": {
"x": 1435,
"y": 3793
},
"left_bottom": {
"x": 119,
"y": 3831
}
}
},
"card_position_back": {//卡片反面位置(检测到卡片反面才会返回)
"pos": {
"left_top": {
"x": 1523,
"y": 2849
},
"right_top": {
"x": 2898,
"y": 2887
},
"right_bottom": {
"x": 2927,
"y": 3831
},
"left_bottom": {
"x": 1523,
"y": 3831
}
}
},
"img_size": {//图片大小
"w": 3120,
"h": 4208
}
}
# 5.2 Request for an upload link
Example Requests
curl https://api.weixin.qq.com/cv/ocr/driving?img_url=ENCODE_URL&access_token=ACCESS_TOCKEN
Return an example
{
"errcode": 0,
"errmsg": "ok",
"plate_num": "粤xxxxx", //车牌号码
"vehicle_type": "小型普通客车", //车辆类型
"owner": "东莞市xxxxx机械厂", //所有人
"addr": "广东省东莞市xxxxx号", //住址
"use_character": "非营运", //使用性质
"model": "江淮牌HFCxxxxxxx", //品牌型号
"vin": "LJ166xxxxxxxx51", //车辆识别代号
"engine_num": "J3xxxxx3", //发动机号码
"register_date": "2018-07-06", //注册日期
"issue_date": "2018-07-01", //发证日期
"plate_num_b": "粤xxxxx", //车牌号码
"record": "441xxxxxx3", //号牌
"passengers_num": "7人", //核定载人数
"total_quality": "2700kg", //总质量
"prepare_quality": "1995kg" //整备质量,
"overall_size": "4582x1795x1458mm" //外廓尺寸,
"card_position_front": {//卡片正面位置(检测到卡片正面才会返回)
"pos": {
"left_top": {
"x": 119,
"y": 2925
},
"right_top": {
"x": 1435,
"y": 2887
},
"right_bottom": {
"x": 1435,
"y": 3793
},
"left_bottom": {
"x": 119,
"y": 3831
}
}
},
"card_position_back": {//卡片反面位置(检测到卡片反面才会返回)
"pos": {
"left_top": {
"x": 1523,
"y": 2849
},
"right_top": {
"x": 2898,
"y": 2887
},
"right_bottom": {
"x": 2927,
"y": 3831
},
"left_bottom": {
"x": 1523,
"y": 3831
}
}
},
"img_size": {//图片大小
"w": 3120,
"h": 4208
}
}
# 5.3 Cloud function call example
Example Requests
const cloud = require('wx-server-sdk')
cloud.init({
env: cloud.DYNAMIC_CURRENT_ENV,
})
exports.main = async (event, context) => {
try {
const result = await cloud.openapi.ocr.vehicleLicense({
"type": 'photo',
"imgUrl": 'ENCODE_URL'
})
return result
} catch (err) {
return err
}
}
Return an example
{
"vehicleType": "小型普通客⻋",
"owner": "东莞市xxxxx机械厂",
"addr": "广东省东莞市xxxxx号",
"useCharacter": "非营运",
"model": "江淮牌HFCxxxxxxx",
"vin": "LJ166xxxxxxxx51",
"engineNum": "J3xxxxx3",
"registerDate": "2018-07-06",
"issueDate": "2018-07-01",
"plateNumB": "粤xxxxx",
"record": "441xxxxxx3",
"passengersNum": "7人",
"totalQuality": "2700kg",
"prepareQuality": "1995kg"
}
# 6. Error code
The following is a list of error codes for this interface, other error codes can refer to General error codes
Error code | Error Description | Solutions |
---|---|---|
-1 | system error | The system is busy, so the developer is asked to try again in a few minutes. |
40001 | invalid credential access_token isinvalid or not latest | AppSecret error while getting access_token, or access_token is invalid.Developers should check that AppSecret is correct, or that they are calling interfaces for the appropriate Official Account |
101000 | invalid image url | |
101003 | not enough market quota |
# 7. Scope of application
Weixin Mini Program | Official Account | Service Account |
---|---|---|
✔ | Certification only | Certification only |
- ✔: The account can call this interface
- Authentication only: means that only authenticated accounts are allowed to be invoked by the enterprise entity, and accounts that are not authenticated or do not support authentication cannot be invoked.
- Other account types that are not expressly stated may not be called on this interface without special instructions;