The Ruby OCR SDK supports the Cropper API.

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

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.parse(
  input_source,
  Mindee::Product::Cropper::CropperV1
)

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

Output (RST):

########
Document
########
:Mindee ID: 149ce775-8302-4798-8649-7eda9fb84a1a
:Filename: default_sample.jpg

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

Prediction
==========

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

Page 0
------
:Document Cropper: Polygon with 26 points.
                   Polygon with 25 points.

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.

Position Field

The position field PositionField does not implement all the basic Field attributes, only bounding_box, polygon and page_id. On top of these, it has access to:

• rectangle (Mindee::Geometry::Quadrilateral): a Polygon with four points that may be oriented (even beyond canvas).
• quadrangle (Mindee::Geometry::Quadrilateral): a free polygon made up of four points.

Page-Level Fields

Some fields are constrained to the page level, and so will not be retrievable at document level.

Attributes

The following fields are extracted for Cropper V1:

Document Cropper

📄cropping (Array<PositionField>): List of documents found in the image.

for page in result.document.inference.pages do
  for cropping_elem in page.prediction.cropping do
    puts cropping_elem.polygon.to_s
    puts cropping_elem.quadrangle.to_s
    puts cropping_elem.rectangle.to_s
    puts cropping_elem.boundingBox.to_s
  end
end

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