CLOVA OCR Validation

CLOVA OCR result linkage verification method

The CLOVA OCR service can verify the value of the recognized text, reducing repetitive verification work and increasing reliability.

In CLOVA OCR Builder, external verification linkage can be set after Template OCR recognition. Using the verification function, if you have your own verification server, you can check each template by interworking with the API.

In other words, you can set a specific document as a template and send the value (for example, zip code) extracted from the document to an external verification server to receive the verification result (VALID or INVALID).

The verification result is reflected in the [CLOVA OCR Custom API] response validationResult object, and you can see the verification result for the CLOVA OCR Custom API client.

Request

Request Body

Image recognition result is sent from CLOVA OCR Builder.

Request Body Example

{
  "image": {
    "uid": "5bbb6c342f054b25a8af898b09bd1122",
    "name": "Test-Request",
    "inferResult": "SUCCESS",
    "message": "SUCCESS",
    "matchedTemplate": {
      "id": 266,
      "name": "EN-Front-2020"
    },
    "validationResult": {
      "result": "UNCHECKED"
    },
    "title": {
      "name": "2020 EN2B-Front",
      "boundingPoly": {
        "vertices": [
          {
            "x": 1148.3334,
            "y": 23.833334
          },
          {
            "x": 1423.5,
            "y": 23.833334
          },
          {
            "x": 1423.5,
            "y": 47.666668
          },
          {
            "x": 1148.3334,
            "y": 47.666668
          }
        ]
      },
      "inferText": "2020EN2B-Front",
      "inferConfidence": 0.99994594
    },
    "fields": [
      {
        "name": "1-Value",
        "valueType": "ALL",
        "boundingPoly": {
          "vertices": [
            {
              "x": 132.16667,
              "y": 491.83334
            },
            {
              "x": 197.16667,
              "y": 491.83334
            },
            {
              "x": 197.16667,
              "y": 546.0
            },
            {
              "x": 132.16667,
              "y": 546.0
            }
          ]
        },
        "inferText": "FIRST\nMIDDLE\nNAME",
        "inferConfidence": 0.99935573,
        "type": "NORMAL"
      },
      {
        "name": "2-Value",
        "valueType": "NUMERIC",
        "boundingPoly": {
          "vertices": [
            {
              "x": 223.98764,
              "y": 1148.0485
            },
            {
              "x": 263.99146,
              "y": 1148.049
            },
            {
              "x": 263.99606,
              "y": 1212.0457
            },
            {
              "x": 223.99258,
              "y": 1212.045
            }
          ]
        },
        "inferText": "",
        "inferConfidence": 0.84649235,
        "type": "NORMAL"
      },
      {
        "name": "3-Value",
        "valueType": "ALL",
        "boundingPoly": {
          "vertices": [
            {
              "x": 348.0137,
              "y": 1376.034
            },
            {
              "x": 507.0252,
              "y": 1376.0349
            },
            {
              "x": 507.0269,
              "y": 1416.0331
            },
            {
              "x": 348.01614,
              "y": 1416.0322
            }
          ]
        },
        "inferText": "",
        "inferConfidence": 0.9938921,
        "type": "MULTI_BOX",
        "subFields": [
          {
            "boundingPoly": {
              "vertices": [
                {
                  "x": 348.0137,
                  "y": 1376.034
                },
                {
                  "x": 385.51636,
                  "y": 1376.0349
                },
                {
                  "x": 385.51862,
                  "y": 1416.0306
                },
                {
                  "x": 348.01614,
                  "y": 1416.0298
                }
              ]
            },
            "inferText": "",
            "inferConfidence": 0.999991
          },
          {
            "boundingPoly": {
              "vertices": [
                {
                  "x": 388.51654,
                  "y": 1376.0349
                },
                {
                  "x": 426.01926,
                  "y": 1376.0356
                },
                {
                  "x": 426.02133,
                  "y": 1416.0315
                },
                {
                  "x": 388.51883,
                  "y": 1416.0306
                }
              ]
            },
            "inferText": "",
            "inferConfidence": 0.98254
          }
        ]
      }
    ]
  }
}

Response

Response Body

Response Body Example

{
  "uid": "5bbb6c342f054b25a8af898b09bd1122",
  "result": "VALID",
  "message": "VALID message!"
}