OCR Engines

An OCR Engine is used in the Digitization component, to identify text in a file, when native content is not available.

Note:

The images that need to be processed should have a resolution range of:

• min: 50 x 50 MP
• max: 9000 x 9000 MP

Here is a selection of OCR Engines that you can choose from, according to your needs, throughout the Document Understanding Framework.

OCR Engine	Activity Pack	Debug Logs Format in Logs Folder	Reports Confidence
UiPath Document OCR	UiPath.OCR.Activities	`${date:format=yyyy-MM-dd	✅
OmniPage OCR	UiPath.OmniPage.Activities	`${date:format=yyyy-MM-dd	✅
Google Cloud Vision OCR	UiPath.UIAutomation.Activities	`${date:format=yyyy-MM-dd	❌ if DetectionMode is set to TextDetection (default) ✅ if DetectionMode is set to DocumentTextDetection
Microsoft Azure Computer Vision OCR	UiPath.UIAutomation.Activities	`${date:format=yyyy-MM-dd	❌ if UseReadAPI is not selected (default) ✅ if UseReadAPI is selected
Microsoft OCR	UiPath.UIAutomation.Activities	`${date:format=yyyy-MM-dd	❌
Tesseract OCR	UiPath.UIAutomation.Activities	`${date:format=yyyy-MM-dd	✅
Abbyy Document OCR	UiPath.AbbyyEmbedded.Activities	`${date:format=yyyy-MM-dd	✅

Note:

When debugging errors, you can always visit the logs folder and check the relevant OCR log files. Read more about logging here.

Important:

Abbyy OCR and Abbyy Cloud OCR are not available in Document Understanding wizards.