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Proof of Address OCR Node.js

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The Node.js OCR SDK supports the Proof of Address API.

Using the sample below, we are going to illustrate how to extract the data that we want using the OCR SDK.
Proof of Address 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.ProofOfAddressV1,
  inputSource
);

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

Output (RST):

########
Document
########
:Mindee ID: 5d2361e9-405e-4fc1-8531-f92a3aef0c38
:Filename: default_sample.jpg

Inference
#########
:Product: mindee/proof_of_address v1.1
:Rotation applied: Yes

Prediction
==========
:Locale: en; en; USD;
:Issuer Name: PPL ELECTRIC UTILITIES
:Issuer Company Registrations:
:Issuer Address: 2 NORTH 9TH STREET CPC-GENN1 ALLENTOWN.PA 18101-1175
:Recipient Name:
:Recipient Company Registrations:
:Recipient Address: 123 MAIN ST ANYTOWN,PA 18062
:Dates: 2011-07-27
        2011-07-06
        2011-08-03
        2011-07-27
        2011-06-01
        2011-07-01
        2010-07-01
        2010-08-01
        2011-07-01
        2009-08-01
        2010-07-01
        2011-07-27
:Date of Issue: 2011-07-27

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

Page 0
------
:Locale: en; en; USD;
:Issuer Name: PPL ELECTRIC UTILITIES
:Issuer Company Registrations:
:Issuer Address: 2 NORTH 9TH STREET CPC-GENN1 ALLENTOWN.PA 18101-1175
:Recipient Name:
:Recipient Company Registrations:
:Recipient Address: 123 MAIN ST ANYTOWN,PA 18062
:Dates: 2011-07-27
        2011-07-06
        2011-08-03
        2011-07-27
        2011-06-01
        2011-07-01
        2010-07-01
        2010-08-01
        2011-07-01
        2009-08-01
        2010-07-01
        2011-07-27
:Date of Issue: 2011-07-27

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, is 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.

Company Registration Field

Aside from the basic Field attributes, the company registration field CompanyRegistrationField also implements the following:

  • type (string): the type of company.

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.

Locale Field

The locale field LocaleField only implements the value, confidence and pageId base Field attributes, but it comes with its own:

  • language (string): ISO 639-1 language code (e.g.: en for English). Can be undefined.
  • country (string): ISO 3166-1 alpha-2 or ISO 3166-1 alpha-3 code for countries (e.g.: GRB or GB for "Great Britain"). Can be undefined.
  • currency (string): ISO 4217 code for currencies (e.g.: USD for "US Dollars"). Can be undefined.

String Field

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

Attributes

The following fields are extracted for Proof of Address V1:

Date of Issue

date (DateField): The date the document was issued.

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

Dates

dates (DateField[]): List of dates found on the document.

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

Issuer Address

issuerAddress (StringField): The address of the document's issuer.

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

Issuer Company Registrations

issuerCompanyRegistration (CompanyRegistrationField[]): List of company registrations found for the issuer.

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

Issuer Name

issuerName (StringField): The name of the person or company issuing the document.

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

Locale

locale (LocaleField): The locale detected on the document.

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

Recipient Address

recipientAddress (StringField): The address of the recipient.

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

Recipient Company Registrations

recipientCompanyRegistration (CompanyRegistrationField[]): List of company registrations found for the recipient.

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

Recipient Name

recipientName (StringField): The name of the person or company receiving the document.

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

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Updated 2 months ago