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IND Passport - India OCR .NET

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The .NET OCR SDK supports the Passport - India API.

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

Quick-Start

using Mindee;
using Mindee.Input;
using Mindee.Product.Ind.IndianPassport;

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<IndianPassportV1>(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: cf88fd43-eaa1-497a-ba29-a9569a4edaa7
:Filename: default_sample.jpg

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

Prediction
==========
:Page Number: 1
:Country: IND
:ID Number: J8369854
:Given Names: JOCELYN MICHELLE
:Surname: DOE
:Birth Date: 1959-09-23
:Birth Place: GUNDUGOLANU
:Issuance Place: HYDERABAD
:Gender: F
:Issuance Date: 2011-10-11
:Expiry Date: 2021-10-10
:MRZ Line 1: P<DOE<<JOCELYNMICHELLE<<<<<<<<<<<<<<<<<<<<<
:MRZ Line 2: J8369854<4IND5909234F2110101<<<<<<<<<<<<<<<8
:Legal Guardian:
:Name of Spouse:
:Name of Mother:
:Old Passport Date of Issue:
:Old Passport Number:
:Address Line 1:
:Address Line 2:
:Address Line 3:
:Old Passport Place of Issue:
:File Number:

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 Passport - India V1:

Address Line 1

Address1: The first line of the address of the passport holder.

System.Console.WriteLine(result.Document.Inference.Prediction.Address1.Value);

Address Line 2

Address2: The second line of the address of the passport holder.

System.Console.WriteLine(result.Document.Inference.Prediction.Address2.Value);

Address Line 3

Address3: The third line of the address of the passport holder.

System.Console.WriteLine(result.Document.Inference.Prediction.Address3.Value);

Birth Date

BirthDate: The birth date of the passport holder, ISO format: YYYY-MM-DD.

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

Birth Place

BirthPlace: The birth place of the passport holder.

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

Country

Country: ISO 3166-1 alpha-3 country code (3 letters format).

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

Expiry Date

ExpiryDate: The date when the passport will expire, ISO format: YYYY-MM-DD.

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

File Number

FileNumber: The file number of the passport document.

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

Gender

Gender: The gender of the passport holder.

Possible values include:

  • M
  • F
System.Console.WriteLine(result.Document.Inference.Prediction.Gender.Value);

Given Names

GivenNames: The given names of the passport holder.

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

ID Number

IdNumber: The identification number of the passport document.

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

Issuance Date

IssuanceDate: The date when the passport was issued, ISO format: YYYY-MM-DD.

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

Issuance Place

IssuancePlace: The place where the passport was issued.

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

Legal Guardian

LegalGuardian: The name of the legal guardian of the passport holder (if applicable).

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

MRZ Line 1

Mrz1: The first line of the machine-readable zone (MRZ) of the passport document.

System.Console.WriteLine(result.Document.Inference.Prediction.Mrz1.Value);

MRZ Line 2

Mrz2: The second line of the machine-readable zone (MRZ) of the passport document.

System.Console.WriteLine(result.Document.Inference.Prediction.Mrz2.Value);

Name of Mother

NameOfMother: The name of the mother of the passport holder.

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

Name of Spouse

NameOfSpouse: The name of the spouse of the passport holder (if applicable).

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

Old Passport Date of Issue

OldPassportDateOfIssue: The date of issue of the old passport (if applicable), ISO format: YYYY-MM-DD.

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

Old Passport Number

OldPassportNumber: The number of the old passport (if applicable).

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

Old Passport Place of Issue

OldPassportPlaceOfIssue: The place of issue of the old passport (if applicable).

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

Page Number

PageNumber: The page number of the passport document.

Possible values include:

  • 1
  • 2
System.Console.WriteLine(result.Document.Inference.Prediction.PageNumber.Value);

Surname

Surname: The surname of the passport holder.

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

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Updated 7 days ago