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FR Carte Nationale d'Identité OCR Node.js

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The Node.js OCR SDK supports the Carte Nationale d'Identité API.

Using the sample below, we are going to illustrate how to extract the data that we want using the OCR SDK.
Carte Nationale d'Identité sample

Quick-Start

const mindee = require("mindee");
// for TS or modules:
// import * as mindee from "mindee";

// Init a new client
const mindeeClient = new mindee.Client({ apiKey: "my-api-key" });

// Load a file from disk
const inputSource = mindeeClient.docFromPath("/path/to/the/file.ext");

// Parse the file
const apiResponse = mindeeClient.parse(
  mindee.product.fr.IdCardV2,
  inputSource
);

// Handle the response Promise
apiResponse.then((resp) => {
  // print a string summary
  console.log(resp.document.toString());
});

Output (RST):

########
Document
########
:Mindee ID: d33828f1-ef7e-4984-b9df-a2bfaa38a78d
:Filename: default_sample.jpg

Inference
#########
:Product: mindee/idcard_fr v2.0
:Rotation applied: Yes

Prediction
==========
:Nationality:
:Card Access Number: 175775H55790
:Document Number:
:Given Name(s): Victor
                Marie
:Surname: DAMBARD
:Alternate Name:
:Date of Birth: 1994-04-24
:Place of Birth: LYON 4E ARRONDISSEM
:Gender: M
:Expiry Date: 2030-04-02
:Mrz Line 1: IDFRADAMBARD<<<<<<<<<<<<<<<<<<075025
:Mrz Line 2: 170775H557903VICTOR<<MARIE<9404246M5
:Mrz Line 3:
:Date of Issue: 2015-04-03
:Issuing Authority: SOUS-PREFECTURE DE BELLE (02)

Page Predictions
================

Page 0
------
:Document Type: OLD
:Document Sides: RECTO & VERSO
:Nationality:
:Card Access Number: 175775H55790
:Document Number:
:Given Name(s): Victor
                Marie
:Surname: DAMBARD
:Alternate Name:
:Date of Birth: 1994-04-24
:Place of Birth: LYON 4E ARRONDISSEM
:Gender: M
:Expiry Date: 2030-04-02
:Mrz Line 1: IDFRADAMBARD<<<<<<<<<<<<<<<<<<075025
:Mrz Line 2: 170775H557903VICTOR<<MARIE<9404246M5
:Mrz Line 3:
:Date of Issue: 2015-04-03
:Issuing Authority: SOUS-PREFECTURE DE BELLE (02)

Field Types

Standard Fields

These fields are generic and used in several products.

Basic Field

Each prediction object contains a set of fields that inherit from the generic Field class.
A typical Field object will have the following attributes:

  • value (number | string): corresponds to the field value. Can be undefined if no value was extracted.
  • confidence (number): the confidence score of the field prediction.
  • boundingBox ([Point, Point, Point, Point]): contains exactly 4 relative vertices (points) coordinates of a right rectangle containing the field in the document.
  • polygon (Point[]): contains the relative vertices coordinates (Point) of a polygon containing the field in the image.
  • pageId (number): the ID of the page, always undefined when at document-level.
  • reconstructed (boolean): indicates whether an object was reconstructed (not extracted as the API gave it).

Note: A Point simply refers to an array of two numbers ([number, number]).

Aside from the previous attributes, all basic fields have access to a toString() method that can be used to print their value as a string.

Classification Field

The classification field ClassificationField does not implement all the basic Field attributes. It only implements value, confidence and pageId.

Note: a classification field's value is always a string`.

Date Field

Aside from the basic Field attributes, the date field DateField also implements the following:

  • dateObject (Date): an accessible representation of the value as a JavaScript object.

String Field

The text field StringField only has one constraint: its value is a string (or undefined).

Page-Level Fields

Some fields are constrained to the page level, and so will not be retrievable at document level.

Attributes

The following fields are extracted for Carte Nationale d'Identité V2:

Alternate Name

alternateName (StringField): The alternate name of the card holder.

console.log(result.document.inference.prediction.alternateName.value);

Issuing Authority

authority (StringField): The name of the issuing authority.

console.log(result.document.inference.prediction.authority.value);

Date of Birth

birthDate (DateField): The date of birth of the card holder.

console.log(result.document.inference.prediction.birthDate.value);

Place of Birth

birthPlace (StringField): The place of birth of the card holder.

console.log(result.document.inference.prediction.birthPlace.value);

Card Access Number

cardAccessNumber (StringField): The card access number (CAN).

console.log(result.document.inference.prediction.cardAccessNumber.value);

Document Number

documentNumber (StringField): The document number.

console.log(result.document.inference.prediction.documentNumber.value);

Document Sides

📄documentSide (ClassificationField): The sides of the document which are visible.

Possible values include:

  • RECTO
  • VERSO
  • RECTO & VERSO
for (const documentSideElem of result.document.documentSide) {
  console.log(documentSideElem.value);
}

Document Type

📄documentType (ClassificationField): The document type or format.

Possible values include:

  • NEW
  • OLD
for (const documentTypeElem of result.document.documentType) {
  console.log(documentTypeElem.value);
}

Expiry Date

expiryDate (DateField): The expiry date of the identification card.

console.log(result.document.inference.prediction.expiryDate.value);

Gender

gender (StringField): The gender of the card holder.

console.log(result.document.inference.prediction.gender.value);

Given Name(s)

givenNames (StringField[]): The given name(s) of the card holder.

for (const givenNamesElem of result.document.inference.prediction.givenNames) {
  console.log(givenNamesElem.value);
}

Date of Issue

issueDate (DateField): The date of issue of the identification card.

console.log(result.document.inference.prediction.issueDate.value);

Mrz Line 1

mrz1 (StringField): The Machine Readable Zone, first line.

console.log(result.document.inference.prediction.mrz1.value);

Mrz Line 2

mrz2 (StringField): The Machine Readable Zone, second line.

console.log(result.document.inference.prediction.mrz2.value);

Mrz Line 3

mrz3 (StringField): The Machine Readable Zone, third line.

console.log(result.document.inference.prediction.mrz3.value);

Nationality

nationality (StringField): The nationality of the card holder.

console.log(result.document.inference.prediction.nationality.value);

Surname

surname (StringField): The surname of the card holder.

console.log(result.document.inference.prediction.surname.value);

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Updated 4 months ago