About the Document Understanding activities

Document Understanding activities allow you to process, classify, and extract documents, for the purpose of automating interpretation for them.

Document Understanding activities are a key component of document processing. It makes full document processing possible by allowing the system to interpret the meaning of a document and extract information from it. You can use document classification and data extraction methods to extract and interpret information from multiple documents with different structures.

At a high level, documents go through the following five fundamental steps:

• Defining document types and data to be extracted;
• Providing the text and its location;
• Classifying the documents from the specified list;
• Extracting the information;
• Confirming the extracted data by a human.

Then, the extracted data can be exported and consumed the way you want to.

The Document Understanding activities include the following packages:

• Document Processing Contracts: Contains data structures and interfaces to be used for integrating with the Document Understanding framework.
• Document Understanding Digitizer: A library that contains digitization related functions.
• Document Understanding ML: Contains activities that integrate machine learning models for Document Understanding workflows.
• Document Understanding OCR Local Server: Contains no activities, but once installed in a project, it enables you to use UiPath Document OCR running locally on the robot machine.
• Document Understanding Process: A template that provides logging, exception handling, retry mechanisms, and all the methods that should be used in a Document Understanding workflow, out of the box.
• Document Understanding: Allows you to process documents.
• Intelligent OCR: Contains the infrastructure for enabling document processing workflows.
• ML Services: Allows you to retrieve and call all ML Skills available on your tenant, as well as upload files or create labeling tasks.
• OCR: Contains the UiPath Screen OCR and UiPath Document OCR activities which use UiPath's in-house OCR engines.
• OCR Contracts: Contains the contracts needed to develop new OCR engines.
• OmniPage: Contains the OmniPage OCR activity which extracts data from an indicated UI (User Interface) element or image using the OmniPage OCR engine.
• PDF: Contains activities designed to extract data from PDF and XPS files.

Modern projects and activities

Visit Activity or API-based limits to check the current specifications and parameters for optimal utilization of Document Understanding modern projects and Document Understanding activities.

Project compatibility

Use the following table to identify the compatibility between the platform and the activity packages:

Table 1. Document Understanding activities project compatibility

	Windows - Legacy Studio projects	Windows (Modern) Studio projects	Cross-platform Studio projects
Document Understanding ML
Document Understanding OCR Local Server
Document Understanding Activities
Intelligent OCR
ML Services
OCR
OCR Contracts
Omnipage
PDF