Class TesseractEngineMode

Allows the developer to choose the algorithm Tesseract will use for OCR. TesseractAndLstm is the recommended behavior for IronOCR.

Inheritance

System.Object

TesseractEngineMode

Namespace: IronOcr

Assembly: IronOcr.dll

Syntax

public sealed class TesseractEngineMode : Enum

Selecting the recognition algorithm Tesseract runs sets TesseractConfiguration.EngineMode to a TesseractEngineMode value. TesseractAndLstm combines the legacy engine with the neural LSTM model and is the recommended mode for IronOCR, LstmOnly uses just the neural model, TesseractOnly uses just the legacy engine, and Default lets Tesseract pick. The Tesseract config how-to sets engine options.

ocr.Configuration.EngineMode = TesseractEngineMode.TesseractAndLstm;

Fields

Default

The default OCR engine is used (currently LSTM-based OCR engine).

Declaration

public const TesseractEngineMode Default

Field Value

Type	Description
TesseractEngineMode

LstmOnly

Only the new LSTM-based OCR engine is used. Uses a pre programmed neural net. (Tesseract 4 + 5 Mode)

Declaration

public const TesseractEngineMode LstmOnly

Field Value

Type	Description
TesseractEngineMode

TesseractAndLstm

Both the legacy and new LSTM based OCR engine is used. (Recommended for a good balance of speed and performance)

Declaration

public const TesseractEngineMode TesseractAndLstm

Field Value

Type	Description
TesseractEngineMode

TesseractOnly

Only the legacy tesseract OCR engine is used. (Tesseract 3 OEM Mode)

Declaration

public const TesseractEngineMode TesseractOnly

Field Value

Type	Description
TesseractEngineMode

value__

Declaration

public int value__

Field Value

Type	Description
System.Int32