The Ruby Client Library supports the License Plate API.

📝

Product Specs

Specification	Details
Endpoint Name	license_plates
Recommended Version	v1.1
Supports Polling/Webhooks	❌ No
Support Synchronous HTTP Calls	✔️ Yes
Geography	🇪🇺 Europe

Using the sample below,
we are going to illustrate how to extract the data that we want using the Ruby Client Library.

Quick-Start

#
# Install the Ruby client library by running:
# gem install mindee
#

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.parse(
  input_source,
  Mindee::Product::EU::LicensePlate::LicensePlateV1
)

# 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: f0f48232-2c80-4473-9c6f-88a09111b84d
:Filename: default_sample.jpg

Inference
#########
:Product: mindee/license_plates v1.0
:Rotation applied: No

Prediction
==========
:License Plates: BY-323-YB

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

Page 0
------
:License Plates: BY-323-YB

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, bool): 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 (bool): 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.

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 License Plate V1:

License Plates

license_plates (Array<StringField>): List of all license plates found in the image.

result.document.inference.prediction.license_plates do |license_plates_elem|
  puts license_plates_elem.value
end

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