The Node.js OCR SDK supports the Health Card API.

Using the sample below, we are going to illustrate how to extract the data that we want using the OCR SDK.

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.enqueueAndParse(
  mindee.product.fr.HealthCardV1,
  inputSource
);

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

Output (RST):

########
Document
########
:Mindee ID: 9ee2733d-933a-4dcd-a73a-a31395e3b288
:Filename: default_sample.jpg

Inference
#########
:Product: mindee/french_healthcard v1.0
:Rotation applied: Yes

Prediction
==========
:Given Name(s): NATHALIE
:Surname: DURAND
:Social Security Number: 2 69 05 49 588 157 80
:Issuance Date: 2007-01-01

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.

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).

Attributes

The following fields are extracted for Health Card V1:

Given Name(s)

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

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

Issuance Date

issuanceDate (DateField): The date when the carte vitale document was issued.

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

Social Security Number

socialSecurity (StringField): The social security number of the card holder.

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

Surname

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

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

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