International ID OCR .NET

The .NET OCR SDK supports the International ID API.

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

Quick-Start

using Mindee;
using Mindee.Input;
using Mindee.Product.InternationalId;

string apiKey = "my-api-key";
string filePath = "/path/to/the/file.ext";

// Construct a new client
MindeeClient mindeeClient = new MindeeClient(apiKey);

// Load an input source as a path string
// Other input types can be used, as mentioned in the docs
var inputSource = new LocalInputSource(filePath);

// Call the product asynchronously with auto-polling
var response = await mindeeClient
    .EnqueueAndParseAsync<InternationalIdV2>(inputSource);

// Print a summary of all the predictions
System.Console.WriteLine(response.Document.ToString());

// Print only the document-level predictions
// System.Console.WriteLine(response.Document.Inference.Prediction.ToString());

Output (RST):

########
Document
########
:Mindee ID: cfa20a58-20cf-43b6-8cec-9505fa69d1c2
:Filename: default_sample.jpg

Inference
#########
:Product: mindee/international_id v2.0
:Rotation applied: No

Prediction
==========
:Document Type: IDENTIFICATION_CARD
:Document Number: 12345678A
:Surnames: MUESTRA
           MUESTRA
:Given Names: CARMEN
:Sex: F
:Birth Date: 1980-01-01
:Birth Place: CAMPO DE CRIPTANA CIUDAD REAL ESPANA
:Nationality: ESP
:Personal Number: BAB1834284<44282767Q0
:Country of Issue: ESP
:State of Issue: MADRID
:Issue Date:
:Expiration Date: 2030-01-01
:Address: C/REAL N13, 1 DCHA COLLADO VILLALBA MADRID MADRID MADRID
:MRZ Line 1: IDESPBAB1834284<44282767Q0<<<<
:MRZ Line 2: 8001010F1301017ESP<<<<<<<<<<<3
:MRZ Line 3: MUESTRA<MUESTRA<<CARMEN<<<<<<<

Field Types

Standard Fields

These fields are generic and used in several products.

BaseField

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

Confidence (double?): the confidence score of the field prediction.
BoundingBox (BoundingBox): contains exactly 4 relative vertices (points) coordinates of a right rectangle containing the field in the document.
Polygon (Polygon): contains the relative vertices coordinates (Polygon extends List<Point>) of a polygon containing the field in the image.
PageId (int?): the ID of the page, always null when at document-level.

Note: A Point simply refers to a List of double.

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

ClassificationField

The classification field ClassificationField extends BaseField, but also implements:

Value (strong): corresponds to the field value.

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

StringField

The text field StringField extends BaseField, but also implements:

Value (string): corresponds to the field value.
RawValue (string): corresponds to the raw value as it appears on the document.

DateField

The date field DateField extends StringField, but also implements:

DateObject (DateTime?): an accessible representation of the value as a C# object. Can be null.

Attributes

The following fields are extracted for International ID V2:

Address

Address: The physical address of the document holder.

System.Console.WriteLine(result.Document.Inference.Prediction.Address.Value);

Birth Date

BirthDate: The date of birth of the document holder.

System.Console.WriteLine(result.Document.Inference.Prediction.BirthDate.Value);

Birth Place

BirthPlace: The place of birth of the document holder.

System.Console.WriteLine(result.Document.Inference.Prediction.BirthPlace.Value);

Country of Issue

CountryOfIssue: The country where the document was issued.

System.Console.WriteLine(result.Document.Inference.Prediction.CountryOfIssue.Value);

Document Number

DocumentNumber: The unique identifier assigned to the document.

System.Console.WriteLine(result.Document.Inference.Prediction.DocumentNumber.Value);

Document Type

DocumentType: The type of personal identification document.

Possible values include:

IDENTIFICATION_CARD
PASSPORT
DRIVER_LICENSE
VISA
RESIDENCY_CARD
VOTER_REGISTRATION

System.Console.WriteLine(result.Document.Inference.Prediction.DocumentType.Value);

Expiration Date

ExpiryDate: The date when the document becomes invalid.

System.Console.WriteLine(result.Document.Inference.Prediction.ExpiryDate.Value);

Given Names

GivenNames: The list of the document holder's given names.

foreach (var GivenNamesElem in result.Document.Inference.Prediction.GivenNames)
{
    System.Console.WriteLine(GivenNamesElem.Value);
}

Issue Date

IssueDate: The date when the document was issued.

System.Console.WriteLine(result.Document.Inference.Prediction.IssueDate.Value);

MRZ Line 1

MrzLine1: The Machine Readable Zone, first line.

System.Console.WriteLine(result.Document.Inference.Prediction.MrzLine1.Value);

MRZ Line 2

MrzLine2: The Machine Readable Zone, second line.

System.Console.WriteLine(result.Document.Inference.Prediction.MrzLine2.Value);

MRZ Line 3

MrzLine3: The Machine Readable Zone, third line.

System.Console.WriteLine(result.Document.Inference.Prediction.MrzLine3.Value);

Nationality

Nationality: The country of citizenship of the document holder.

System.Console.WriteLine(result.Document.Inference.Prediction.Nationality.Value);

Personal Number

PersonalNumber: The unique identifier assigned to the document holder.

System.Console.WriteLine(result.Document.Inference.Prediction.PersonalNumber.Value);

Sex

Sex: The biological sex of the document holder.

System.Console.WriteLine(result.Document.Inference.Prediction.Sex.Value);

State of Issue

StateOfIssue: The state or territory where the document was issued.

System.Console.WriteLine(result.Document.Inference.Prediction.StateOfIssue.Value);

Surnames

Surnames: The list of the document holder's family names.

foreach (var SurnamesElem in result.Document.Inference.Prediction.Surnames)
{
    System.Console.WriteLine(SurnamesElem.Value);
}

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Updated 2 months ago