Cropper

The Node.js SDK supports the Mindee V1 Cropper API.

Product Specifications

Specification	Details
Endpoint Name	cropper
Recommended Version	v1.1
Supports Polling/Webhooks	❌ No
Support Synchronous HTTP Calls	✔️ Yes
Geography	🌐 Global

Quick-Start

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

Sample Code

const mindee = require("mindee");
// for TS or modules:
// import * as mindee from "mindee";

// Init a new client
const mindeeClient = new mindee.Client({ apiKey: "my-api-key" });

// Load a file from disk
const inputSource = mindeeClient.docFromPath("/path/to/the/file.ext");

// Parse the file
const apiResponse = mindeeClient.parse(
  mindee.product.CropperV1,
  inputSource
);

// Handle the response Promise
apiResponse.then((resp) => {
  // print a string summary
  console.log(resp.document.toString());
});

Sample 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.

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 (number | string): corresponds to the field value. Can be undefined if no value was extracted.

• confidence (number): the confidence score of the field prediction.

• boundingBox ([Point, Point, Point, Point]): contains exactly 4 relative vertices (points) coordinates of a right rectangle containing the field in the document.

• polygon (Point[]): contains the relative vertices coordinates (Point) of a polygon containing the field in the image.

• pageId (number): the ID of the page, always undefined when at document-level.

• reconstructed (boolean): indicates whether an object was reconstructed (not extracted as the API gave it).

A Point simply refers to an array of two numbers ([number, number]).

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

Position Field

The position field PositionField implements the boundingBox, polygon and pageId from the base Field attributes.

In addition, it comes with these specific attributes:

• rectangle ([Point, Point, Point, Point]): a Polygon with four points that may be oriented (even beyond canvas).

• quadrangle ([Point, Point, Point, Point]): 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 (PositionField[]): List of documents found in the image.

for (const page of result.document.inference.pages) {
  for (const croppingElem of page.prediction.cropping) {
    console.log(croppingElem.polygon);
    console.log(croppingElem.quadrangle);
    console.log(croppingElem.rectangle);
    console.log(croppingElem.boundingBox);
  }
}