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IND Passport - India OCR Ruby

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The Ruby 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

require 'mindee'

# Init a new client
mindee_client = Mindee::Client.new(api_key: 'my-api-key')

# Load a file from disk
input_source = mindee_client.source_from_path('/path/to/the/file.ext')

# Parse the file
result = mindee_client.enqueue_and_parse(
  input_source,
  Mindee::Product::IND::IndianPassport::IndianPassportV1
)

# Print a full summary of the parsed data in RST format
puts result.document

# Print the document-level parsed data
# puts result.document.inference.prediction

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.

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 (String, Float, Integer, Boolean): corresponds to the field value. Can be nil if no value was extracted.
  • confidence (Float, nil): the confidence score of the field prediction.
  • bounding_box (Mindee::Geometry::Quadrilateral, nil): contains exactly 4 relative vertices (points) coordinates of a right rectangle containing the field in the document.
  • polygon (Mindee::Geometry::Polygon, nil): contains the relative vertices coordinates (Point) of a polygon containing the field in the image.
  • page_id (Integer, nil): the ID of the page, always nil when at document-level.
  • reconstructed (Boolean): indicates whether an object was reconstructed (not extracted as the API gave it).

Aside from the previous attributes, all basic fields have access to a to_s 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 page_id.

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:

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

String Field

The text field StringField only has one constraint: it's value is a String (or nil).

Attributes

The following fields are extracted for Passport - India V1:

Address Line 1

address1 (StringField): The first line of the address of the passport holder.

puts result.document.inference.prediction.address1.value

Address Line 2

address2 (StringField): The second line of the address of the passport holder.

puts result.document.inference.prediction.address2.value

Address Line 3

address3 (StringField): The third line of the address of the passport holder.

puts result.document.inference.prediction.address3.value

Birth Date

birth_date (DateField): The birth date of the passport holder, ISO format: YYYY-MM-DD.

puts result.document.inference.prediction.birth_date.value

Birth Place

birth_place (StringField): The birth place of the passport holder.

puts result.document.inference.prediction.birth_place.value

Country

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

puts result.document.inference.prediction.country.value

Expiry Date

expiry_date (DateField): The date when the passport will expire, ISO format: YYYY-MM-DD.

puts result.document.inference.prediction.expiry_date.value

File Number

file_number (StringField): The file number of the passport document.

puts result.document.inference.prediction.file_number.value

Gender

gender (ClassificationField): The gender of the passport holder.

Possible values include:

  • M
  • F
puts result.document.inference.prediction.gender.value

Given Names

given_names (StringField): The given names of the passport holder.

puts result.document.inference.prediction.given_names.value

ID Number

id_number (StringField): The identification number of the passport document.

puts result.document.inference.prediction.id_number.value

Issuance Date

issuance_date (DateField): The date when the passport was issued, ISO format: YYYY-MM-DD.

puts result.document.inference.prediction.issuance_date.value

Issuance Place

issuance_place (StringField): The place where the passport was issued.

puts result.document.inference.prediction.issuance_place.value

Legal Guardian

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

puts result.document.inference.prediction.legal_guardian.value

MRZ Line 1

mrz1 (StringField): The first line of the machine-readable zone (MRZ) of the passport document.

puts result.document.inference.prediction.mrz1.value

MRZ Line 2

mrz2 (StringField): The second line of the machine-readable zone (MRZ) of the passport document.

puts result.document.inference.prediction.mrz2.value

Name of Mother

name_of_mother (StringField): The name of the mother of the passport holder.

puts result.document.inference.prediction.name_of_mother.value

Name of Spouse

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

puts result.document.inference.prediction.name_of_spouse.value

Old Passport Date of Issue

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

puts result.document.inference.prediction.old_passport_date_of_issue.value

Old Passport Number

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

puts result.document.inference.prediction.old_passport_number.value

Old Passport Place of Issue

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

puts result.document.inference.prediction.old_passport_place_of_issue.value

Page Number

page_number (ClassificationField): The page number of the passport document.

Possible values include:

  • 1
  • 2
puts result.document.inference.prediction.page_number.value

Surname

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

puts result.document.inference.prediction.surname.value

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Updated about 1 month ago