Driver's license
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    Driver's license

    • PDF

    Article summary

    Available in Classic and VPC

    Recognize and extract key-value input information from driver's licenses using a specialized model engine.

    Request

    This section describes the request format. The method and URI are as follows:

    MethodURI
    POST/id-card

    Request headers

    For information about the headers common to all CLOVA OCR APIs, see CLOVA OCR request headers.

    Request body

    You can include the following data in the body of your request:

    If Content-Type: application/json

    You can include the following data in the body of your request if the request header's Content-Type is application/json:

    FieldTypeRequiredDescription
    versionString-Version information
    • Only use V2
    requestIdStringRequiredRandom API call UUID
    timestampIntegerRequiredRandom API call time (timestamp)
    imagesArrayRequiredimages details

    If Content-Type: multipart/form-data

    You can include the following data in the body of your request if the request header's Content-Type is multipart/form-data:

    FieldTypeRequiredDescription
    messageObjectRequiredRequest data information
    message.versionStringRequiredVersion information
    • Only use V2
    message.requestIdStringRequiredRandom API call UUID
    message.timestampIntegerRequiredRandom API call time (timestamp)
    message.imagesArrayRequiredimages details
    fileFileRequiredOCR recognition image file

    images

    The following describes images.

    FieldTypeRequiredDescription
    formatStringRequiredImage format
    • jpg | jpeg | png | pdf | tif | tiff
      • Image: jpg, jpeg, png
      • Single page: pdf, tif, tiff
    • Select and enter one of the image formats
    nameStringRequiredRandom image name
    • Use to identify images and check response results
    dataStringRequiredBase64-encoded image data
    • Can be entered if Content-Type: application/json

    Request example

    The request example is as follows:

    If Content-Type: application/json

    The request example if the request header's Content-Type is application/json is as follows:

    curl --location --request POST 'https://cbgrx5natw.apigw.ntruss.com/custom/v1/{DomainId}/{InvokeKey}/document/id-card' \
    --header 'Content-Type: application/json' \
    --header 'X-OCR-SECRET: {Secret key issued when registering the app}' \
    --data '{
        "version": "V2",
        "requestId": "string",
        "timestamp": 0,
        "images": [
            { 
                "format": "png", 
                "name": "driverlicense_test", 
                "data":"{Base64-encoded image data}"
            }
        ]
     }'
    

    If Content-Type: multipart/form-data

    The request example if the request header's Content-Type is multipart/form-data is as follows:

    curl --location --request POST 'https://cbgrx5natw.apigw.ntruss.com/custom/v1/{DomainId}/{InvokeKey}/document/id-card' \
    --header 'X-OCR-SECRET: {Secret key issued when registering the app}' \
    --header 'Content-Type: multipart/form-data' \
    --form 'message="{\"version\": \"V2\", \"requestId\": \"1234\", \"timestamp\": 0, \"images\": [{\"format\": \"png\", \"name\": \"driverlicense_test\"}]}"' \
    --form 'file=@"{file}"'
    

    Response

    This section describes the response format.

    Response body

    The response body includes the following data:

    FieldTypeRequiredDescription
    versionString-Version information
    • Only use V2
    requestIdString-Random API call UUID
    timestampInteger-API call time (timestamp)
    imagesArray-images details

    images

    The following describes images.

    FieldTypeRequiredDescription
    uidString-Driver's license image UID
    • Use for API validity checks
    nameString-Driver's license image name
    • Use to identify images and check response results
    inferResultString-Driver's license image recognition result
    • SUCCESS | FAILURE | ERROR
      • SUCCESS: recognition successful
      • FAILURE: recognition failure
      • ERROR: recognition processing exception
    messageString-Result message
    validationResultObject-Validity check result information
    validationResult.resultString-Validity check result code
    • NO_REQUESTED | UNCHECKED | ERROR | VALID | INVALID
      • NO_REQUESTED: no validation action requested (validity check failed)
      • UNCHECKED: unable to verify validation
      • ERROR: error on validation (validity check failed)
      • VALID: validation result valid (validity check succeeded)
      • INVALID: failed to pass validation
    validationResult.messageString-Validity check result details message
    • This value is not always returned
    convertedImageInfoObject-Converted image information
    • If format is pdf or tiff
    • Coordinate values are set relative to the called image file
    convertedImageInfo.widthInteger-Converted image width
    convertedImageInfo.heightInteger-Converted image height
    convertedImageInfo.pageIndexInteger-Converted image page index
    idCardObject-ID card details
    idCard.metaObject-Meta information
    idCard.meta.estimatedLanguageString-OCR estimated language
    • ko | en | ja
      • ko:Korean
      • en: English
      • ja: Japanese
    idCard.resultObject-ID card OCR recognition result

    result

    The following describes result.

    FieldTypeRequiredDescription
    isConfidentBoolean-Whether it has details for each type
    • true | false
      • true: has
      • false: doesn't have
    dlObject-Driver's license information
    dl.typeArray-Driver's license type details
    dl.numArray-Driver's license number details
    dl.nameArray-Name details
    dl.personalNumArray-Resident registration number details
    dl.addressArray-Address details
    dl.renewStartDateArray-Renewal period start date details
    dl.renewEndDateArray-Renewal period end date details
    dl.conditionArray-Driver's license condition details
    dl.codeArray-Driver's license code details
    dl.organDonationArray-Organ and tissue donation registration details
    dl.issueDateArray-Issuance date details
    dl.authorityArray-Issuing authority details
    roisArray-Object border position information
    idTypeString-ID card type
    • Driver's License

    type

    The following describes dl.type.

    FieldTypeRequiredDescription
    textString-Recognized type text
    keyTextString-Key value of recognized type text
    confidenceScoreFloat-Confidence of recognized type text
    • 0 - 1
    • The higher the confidence value, the more accurate the text is
    boundingPolysArray-boundingPoly details

    num

    The following describes dl.num.

    FieldTypeRequiredDescription
    textString-Recognized number text
    formattedObject-Recognized number text information
    formatted.valueString-Recognized number text value
    keyTextString-Key value of recognized number text
    confidenceScoreFloat-Confidence of recognized number text
    • 0 - 1
    • The higher the confidence value, the more accurate the text is
    boundingPolysArray-boundingPoly details
    maskingPolysArray-maskingPoly details

    name

    The following describes dl.name.

    FieldTypeRequiredDescription
    textString-Recognized name text
    formattedObject-Recognized name text information
    formatted.valueString-Recognized name text value
    keyTextString-Key value of recognized name text
    confidenceScoreFloat-Confidence of recognized name text
    • 0 - 1
    • The higher the confidence value, the more accurate the text is
    boundingPolysArray-boundingPoly details
    maskingPolysArray-maskingPoly details

    personalNum

    The following describes dl.personalNum.

    FieldTypeRequiredDescription
    textString-Recognized resident registration number text
    formattedObject-Recognized resident registration number text information
    formatted.valueString-Recognized resident registration number text value
    keyTextString-Key value of recognized resident registration number text
    confidenceScoreFloat-Confidence of recognized resident registration number text
    • 0 - 1
    • The higher the confidence value, the more accurate the text is
    boundingPolysArray-boundingPoly details
    maskingPolysArray-maskingPoly details

    address

    The following describes dl.address.

    FieldTypeRequiredDescription
    textString-Recognized address text
    formattedObject-Recognized address text information
    formatted.valueString-Recognized address text value
    keyTextString-Key value of recognized address text
    confidenceScoreFloat-Confidence of recognized address text
    • 0 - 1
    • The higher the confidence value, the more accurate the text is
    boundingPolysArray-boundingPoly details
    maskingPolysArray-maskingPoly details

    Date object information

    The following describes the date object.

    FieldTypeRequiredDescription
    textString-Recognized date text
    formattedObject-Recognized date text information
    formatted.yearString-Year (yyyy) of recognized date
    formatted.monthString-Month (MM) of recognized date
    formatted.dayString-Day (dd) of recognized date
    keyTextString-Key value of recognized date text
    confidenceScoreFloat-Confidence of recognized date text
    • 0 - 1
    • The higher the confidence value, the more accurate the text is
    boundingPolysArray-boundingPoly details
    maskingPolysArray-maskingPoly details

    condition

    The following describes dl.condition.

    FieldTypeRequiredDescription
    textString-Recognized condition text
    keyTextString-Key value of recognized condition text
    confidenceScoreFloat-Confidence of recognized condition text
    • 0 - 1
    • The higher the confidence value, the more accurate the text is
    boundingPolysArray-boundingPoly details
    maskingPolysArray-maskingPoly details

    code

    The following describes dl.code.

    FieldTypeRequiredDescription
    textString-Recognized code text
    formattedObject-Recognized code text information
    formatted.valueString-Recognized code text value
    keyTextString-Key value of recognized code text
    confidenceScoreFloat-Confidence of recognized code text
    • 0 - 1
    • The higher the confidence value, the more accurate the text is
    boundingPolysArray-boundingPoly details
    maskingPolysArray-maskingPoly details

    organDonation

    The following describes dl.organDonation.

    FieldTypeRequiredDescription
    textString-Recognized organ and tissue donation text
    keyTextString-Key value of recognized organ and tissue donation text
    confidenceScoreFloat-Confidence of recognized organ and tissue donation text
    • 0 - 1
    • The higher the confidence value, the more accurate the text is
    boundingPolysArray-boundingPoly details
    maskingPolysArray-maskingPoly details

    authority

    The following describes dl.authority.

    FieldTypeRequiredDescription
    textString-Recognized issuing authority text
    formattedObject-Recognized issuing authority text information
    formatted.valueString-Recognized issuing authority text value
    keyTextString-Key value of recognized issuing authority text
    confidenceScoreFloat-Confidence of recognized issuing authority text
    • 0 - 1
    • The higher the confidence value, the more accurate the text is
    boundingPolysArray-boundingPoly details
    maskingPolysArray-maskingPoly details

    rois

    The following describes rois.

    FieldTypeRequiredDescription
    FieldTypeRequiredDescription
    ------------
    xFloat-Object border position X-axis coordinate value
    yFloat-Object border position Y-axis coordinate value

    boundingPolys

    The following describes boundingPolys.

    FieldTypeRequiredDescription
    verticesArray-vertices details

    maskingPolys

    The following describes maskingPolys.

    FieldTypeRequiredDescription
    verticesArray-vertices details

    boundingPolyVertices

    The following describes boundingPolyVertices.

    FieldTypeRequiredDescription
    xFloat-X-axis coordinate value
    yFloat-Y-axis coordinate value

    Response status codes

    For response status codes common to all CLOVA OCR APIs, see Common CLOVA OCR response status codes.

    Response example

    The response example is as follows:

    Success

    The following is a sample response upon a successful call.

    {
        "version": "V2",
        "requestId": "1234",
        "timestamp": 1725409664957,
        "images": [
            {
                "uid": "{uid}",
                "name": "driverlicense_test",
                "inferResult": "SUCCESS",
                "message": "SUCCESS",
                "validationResult": {
                    "result": "NO_REQUESTED"
                },
                "idCard": {
                    "meta": {
                        "estimatedLanguage": "ko"
                    },
                    "result": {
                        "isConfident": true,
                        "dl": {
                            "type": [
                                {
                                    "text": "Class 1 Large Class 1 Ordinary Class 1 Small Special (Large tow, Small tow, Rescue) Class 2 Ordinary Class 2 Small Motorcycle",
                                    "keyText": "",
                                    "confidenceScore": 0.0,
                                    "boundingPolys": [
                                        {
                                            "vertices": [
                                                {
                                                    "x": 6.875,
                                                    "y": 20.625
                                                },
                                                {
                                                    "x": 77.5,
                                                    "y": 20.625
                                                },
                                                {
                                                    "x": 77.5,
                                                    "y": 42.5
                                                },
                                                {
                                                    "x": 6.875,
                                                    "y": 42.5
                                                }
                                            ]
                                        }
                                    ]
                                }
                            ],
                            "num": [
                                {
                                    "text": "**-**-******-**",
                                    "formatted": {
                                        "value": "**-**-******-**"
                                    },
                                    "keyText": "",
                                    "confidenceScore": 0.0,
                                    "boundingPolys": [
                                        {
                                            "vertices": [
                                                {
                                                    "x": 270.66333,
                                                    "y": 81.96319
                                                },
                                                {
                                                    "x": 615.7258,
                                                    "y": 83.148964
                                                },
                                                {
                                                    "x": 615.59015,
                                                    "y": 122.63947
                                                },
                                                {
                                                    "x": 270.52765,
                                                    "y": 121.4537
                                                }
                                            ]
                                        }
                                    ],
                                    "maskingPolys": [
                                        {
                                            "vertices": [
                                                {
                                                    "x": 404.75287,
                                                    "y": 78.474884
                                                },
                                                {
                                                    "x": 619.68854,
                                                    "y": 79.213486
                                                },
                                                {
                                                    "x": 619.5257,
                                                    "y": 126.60209
                                                },
                                                {
                                                    "x": 404.59003,
                                                    "y": 125.86349
                                                }
                                            ]
                                        }
                                    ]
                                }
                            ],
                            "name": [
                                {
                                    "text": "Hong**",
                                    "formatted": {
                                        "value": "Hong**"
                                    },
                                    "keyText": "",
                                    "confidenceScore": 0.0,
                                    "boundingPolys": [
                                        {
                                            "vertices": [
                                                {
                                                    "x": 268.125,
                                                    "y": 130.0
                                                },
                                                {
                                                    "x": 358.75,
                                                    "y": 130.0
                                                },
                                                {
                                                    "x": 358.75,
                                                    "y": 164.375
                                                },
                                                {
                                                    "x": 268.125,
                                                    "y": 164.375
                                                }
                                            ]
                                        }
                                    ],
                                    "maskingPolys": []
                                }
                            ],
                            "personalNum": [
                                {
                                    "text": "******-*******",
                                    "formatted": {
                                        "value": "******-*******"
                                    },
                                    "keyText": "",
                                    "confidenceScore": 0.0,
                                    "boundingPolys": [
                                        {
                                            "vertices": [
                                                {
                                                    "x": 264.71436,
                                                    "y": 161.93407
                                                },
                                                {
                                                    "x": 496.74896,
                                                    "y": 159.34149
                                                },
                                                {
                                                    "x": 497.16132,
                                                    "y": 196.25029
                                                },
                                                {
                                                    "x": 265.1267,
                                                    "y": 198.84286
                                                }
                                            ]
                                        }
                                    ],
                                    "maskingPolys": [
                                        {
                                            "vertices": [
                                                {
                                                    "x": 376.99954,
                                                    "y": 156.98816
                                                },
                                                {
                                                    "x": 500.39862,
                                                    "y": 155.60939
                                                },
                                                {
                                                    "x": 500.89346,
                                                    "y": 199.89995
                                                },
                                                {
                                                    "x": 377.49442,
                                                    "y": 201.27872
                                                }
                                            ]
                                        }
                                    ]
                                }
                            ],
                            "address": [
                                {
                                    "text": "Seoul***",
                                    "formatted": {
                                        "value": "Seoul***"
                                    },
                                    "keyText": "",
                                    "confidenceScore": 0.0,
                                    "boundingPolys": [
                                        {
                                            "vertices": [
                                                {
                                                    "x": 263.125,
                                                    "y": 232.5
                                                },
                                                {
                                                    "x": 301.25,
                                                    "y": 232.5
                                                },
                                                {
                                                    "x": 301.25,
                                                    "y": 258.75
                                                },
                                                {
                                                    "x": 263.125,
                                                    "y": 258.75
                                                }
                                            ]
                                        }
                                    ],
                                    "maskingPolys": []
                                }
                            ],
                            "renewStartDate": [
                                {
                                    "text": "2029.01.01",
                                    "formatted": {
                                        "year": "2029",
                                        "month": "01",
                                        "day": "01"
                                    },
                                    "keyText": "",
                                    "confidenceScore": 0.0,
                                    "boundingPolys": [
                                        {
                                            "vertices": [
                                                {
                                                    "x": 402.39316,
                                                    "y": 300.80316
                                                },
                                                {
                                                    "x": 531.2038,
                                                    "y": 300.008
                                                },
                                                {
                                                    "x": 531.3579,
                                                    "y": 324.9801
                                                },
                                                {
                                                    "x": 402.54727,
                                                    "y": 325.7752
                                                }
                                            ]
                                        }
                                    ],
                                    "maskingPolys": []
                                }
                            ],
                            "renewEndDate": [
                                {
                                    "text": "2029 12.31",
                                    "formatted": {
                                        "year": "2029",
                                        "month": "12",
                                        "day": "31"
                                    },
                                    "keyText": "",
                                    "confidenceScore": 0.0,
                                    "boundingPolys": [
                                        {
                                            "vertices": [
                                                {
                                                    "x": 425.987,
                                                    "y": 332.6018
                                                },
                                                {
                                                    "x": 481.51587,
                                                    "y": 329.9576
                                                },
                                                {
                                                    "x": 482.8507,
                                                    "y": 357.98932
                                                },
                                                {
                                                    "x": 427.32184,
                                                    "y": 360.6335
                                                }
                                            ]
                                        }
                                    ],
                                    "maskingPolys": []
                                }
                            ],
                            "condition": [
                                {
                                    "text": "Geon 8",
                                    "keyText": "",
                                    "confidenceScore": 0.0,
                                    "boundingPolys": [
                                        {
                                            "vertices": [
                                                {
                                                    "x": 341.875,
                                                    "y": 361.25
                                                },
                                                {
                                                    "x": 367.5,
                                                    "y": 361.25
                                                },
                                                {
                                                    "x": 367.5,
                                                    "y": 388.75
                                                },
                                                {
                                                    "x": 341.875,
                                                    "y": 388.75
                                                }
                                            ]
                                        }
                                    ],
                                    "maskingPolys": []
                                }
                            ],
                            "code": [
                                {
                                    "text": "H1***",
                                    "formatted": {
                                        "value": "H1***"
                                    },
                                    "keyText": "",
                                    "confidenceScore": 0.0,
                                    "boundingPolys": [
                                        {
                                            "vertices": [
                                                {
                                                    "x": 582.5,
                                                    "y": 351.87497
                                                },
                                                {
                                                    "x": 690.625,
                                                    "y": 351.87497
                                                },
                                                {
                                                    "x": 690.625,
                                                    "y": 379.99997
                                                },
                                                {
                                                    "x": 582.5,
                                                    "y": 379.99997
                                                }
                                            ]
                                        }
                                    ],
                                    "maskingPolys": []
                                }
                            ],
                            "organDonation": [
                                {
                                    "text": "Organ and tissue donation",
                                    "keyText": "",
                                    "confidenceScore": 0.0,
                                    "boundingPolys": [
                                        {
                                            "vertices": [
                                                {
                                                    "x": 59.375,
                                                    "y": 454.375
                                                },
                                                {
                                                    "x": 105.625,
                                                    "y": 454.375
                                                },
                                                {
                                                    "x": 105.625,
                                                    "y": 479.375
                                                },
                                                {
                                                    "x": 59.375,
                                                    "y": 479.375
                                                }
                                            ]
                                        }
                                    ]
                                }
                            ],
                            "issueDate": [
                                {
                                    "text": "2019.09.10",
                                    "formatted": {
                                        "year": "2019",
                                        "month": "09",
                                        "day": "10"
                                    },
                                    "keyText": "",
                                    "confidenceScore": 0.0,
                                    "boundingPolys": [
                                        {
                                            "vertices": [
                                                {
                                                    "x": 249.375,
                                                    "y": 443.75
                                                },
                                                {
                                                    "x": 368.125,
                                                    "y": 443.75
                                                },
                                                {
                                                    "x": 368.125,
                                                    "y": 475.0
                                                },
                                                {
                                                    "x": 249.375,
                                                    "y": 475.0
                                                }
                                            ]
                                        }
                                    ],
                                    "maskingPolys": [
                                        {
                                            "vertices": [
                                                {
                                                    "x": 246.28294,
                                                    "y": 440.82266
                                                },
                                                {
                                                    "x": 411.842,
                                                    "y": 440.82266
                                                },
                                                {
                                                    "x": 411.842,
                                                    "y": 477.9273
                                                },
                                                {
                                                    "x": 246.28294,
                                                    "y": 477.9273
                                                }
                                            ]
                                        }
                                    ]
                                }
                            ],
                            "authority": [
                                {
                                    "text": "Seoul Metropolitan Police Agency",
                                    "formatted": {
                                        "value": "Seoul Metropolitan Police Commissioner"
                                    },
                                    "keyText": "",
                                    "confidenceScore": 0.0,
                                    "boundingPolys": [
                                        {
                                            "vertices": [
                                                {
                                                    "x": 402.79678,
                                                    "y": 436.09882
                                                },
                                                {
                                                    "x": 651.7483,
                                                    "y": 433.49652
                                                },
                                                {
                                                    "x": 652.1772,
                                                    "y": 474.53296
                                                },
                                                {
                                                    "x": 403.2257,
                                                    "y": 477.13528
                                                }
                                            ]
                                        }
                                    ],
                                    "maskingPolys": []
                                }
                            ]
                        },
                        "rois": [
                            {
                                "vertices": [
                                    {
                                        "x": -4.7505364,
                                        "y": -5.066147
                                    },
                                    {
                                        "x": 712.13684,
                                        "y": -2.8448386
                                    },
                                    {
                                        "x": 714.93665,
                                        "y": 480.58566
                                    },
                                    {
                                        "x": -2.094209,
                                        "y": 492.42014
                                    }
                                ]
                            }
                        ],
                        "idtype": "Driver's License"
                    }
                }
            }
        ]
    }
    

    Failure

    The following is a sample response upon a failed call.

    {
        "version": "V2",
        "requestId": "1234",
        "timestamp": 1725235840459,
        "images": [
            {
                "uid": "{uid}",
                "name": "idcard_sample",
                "inferResult": "ERROR",
                "message": "Read page:0 error.",
                "validationResult": {
                    "result": "NO_REQUESTED"
                }
            }
        ]
    }
    

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