Class TesseractOcr

Namespace: LMKit.Integrations.Tesseract

Assembly: LM-Kit.NET.dll

Provides OCR functionality using the Tesseract engine, with optional language and orientation detection, and automatic model download support. Implements IDisposable to release native Tesseract resources.

public sealed class TesseractOcr : OcrEngine, IDisposable

Inheritance: object

OcrEngine

TesseractOcr

Implements: IDisposable

Inherited Members: OcrEngine.OcrStarting

OcrEngine.OcrCompleted

object.Equals(object)

object.Equals(object, object)

object.GetHashCode()

object.GetType()

object.ReferenceEquals(object, object)

object.ToString()

Examples

using var ocr = new TesseractOcr();

// Optional: enable automatic language detection
ocr.VisionModel = myVisionModel;
ocr.EnableLanguageDetection = true;

var result = await ocr.RunAsync(ocrParameters, cancellationToken);

Remarks

This class wraps the Tesseract OCR engine and provides additional features such as:

Automatic language detection (requires a vision-capable LM model)
Automatic page orientation detection and correction
Automatic deskewing of scanned documents
On-demand downloading of Tesseract traineddata files from Hugging Face

Constructors

TesseractOcr(): Initializes a new instance of the TesseractOcr class using the default model storage directory.

TesseractOcr(string): Initializes a new instance of the TesseractOcr class with the specified Tesseract resource path.

Properties

DefaultLanguage: Gets or sets the default ISO 639-2/T language code used when a specific language model is not available or language detection is disabled.

EnableAutoDeskew: Gets or sets a value indicating whether automatic deskewing is applied to the input image before OCR.

EnableLanguageDetection: Gets or sets a value indicating whether automatic language detection is performed before OCR.

EnableModelDownload: Gets or sets a value indicating whether missing Tesseract traineddata files should be automatically downloaded.

EnableOrientationDetection: Gets or sets a value indicating whether automatic orientation detection is performed before OCR.

VisionModel: Gets or sets the vision-capable LM model used for automatic language detection.

Methods

Dispose(): Releases all resources used by this TesseractOcr instance.

RunAsync(OcrParameters, CancellationToken): Runs OCR on the provided image data asynchronously.

Events

LanguageDetected: Occurs when a language is detected during OCR processing.

OrientationDetected: Occurs when page orientation is detected during OCR processing.