NOTE: Missing Images

Screenshots that were part of this article were lost in a KB system migration. They are substituted with "img" for the time being.

OCR Engine

developer can recognize an image and output that image to a file, or enumerate its lines, words, and characters with confidence.

Data sources for the engine can be scanned images or files. The engine output consists of either a file or a class hierarchy. This model is illustrated below.

img

As OcrEngine object is abstract, you cannot create an instance of this object. Nevertheless, the object definition contains most of the necessary functionality needed for a concrete subclass to function with a minimum of extra code.

The OcrEngine object has five primary components as illustrated below:

• Preprocessing options
• Document translators
• Page element factory
• Font mapping
• Font building

img

See Also

• Tesseract5Engine (New in 11.4.0.9)
• OmniPageEngine (New in 11.3)
• GlyphReaderEngine
• HOWTO: Load GlyphReader By Reflection
• Tesseract3Engine (Retiring in 11.5)
• AbbyyEngine (Retired in 11.3)
• Tesseract Engine (Retired in 11.1)
• RecoStar Engine (retired)
• HOWTO: Deploy a Project using OCR

Original Article

Q10364 - INFO: OcrEngine - Overview

Last Update

2026-11-11 - TD - (Noted missing images)