Changes in TesseractOcrMaui v1.2.0

New Ocr Iterators give user better control:

• Access text layout information
• Easier access over text blocks like Line and Word

Issues/Requests

From issue #41 implement iterators to achieve better structure analysis from recognized text.

For more information

For more information about added iterators see added iterators

New in Tesseract ocr Maui v1.1.6

• Fixes character encoding problems with non ASCII characters #38
• Makes errors clearer by adding more explanatory exceptions

New in Tesseract Ocr Maui v1.1.5

• Fixes to ios (issue #32)

NEW IN TESSERACT OCR MAUI v1.1.0

TesseractOcrMaui Gets Support For iOS

• Nuget package now supports iOS platform
• Closes issue #11
• All platforms now run Tesseract 5.3.3 or newer

New Runtimes

New contributor @sivanmg

Big thanks to Ivan Mendoza for contributions towards iOS support!
Without help there wouldn't be iOS support for this package.

New in v1.1.1

Fix ios problems #32 from v1.1.0

NEW IN TESSERACT OCR MAUI v1.1.0

TesseractOcrMaui Gets Support For iOS

• Nuget package now supports iOS platform
• Closes issue #11
• All platforms now run Tesseract 5.3.3 or newer

New Runtimes

New contributor @sivanmg

Big thanks to Ivan Mendoza for contributions towards iOS support!
Without help there wouldn't be iOS support for this package.

NEW IN TESSERACT OCR MAUI v1.1.0

TesseractOcrMaui Gets Support For iOS

• Nuget package now supports iOS platform
• Closes issue #11
• All platforms now run Tesseract 5.3.3 or newer

New Runtimes

New contributor @sivanmg

Big thanks to Ivan Mendoza for contributions towards iOS support!
Without help there wouldn't be iOS support for this package.

Add engine mode configuration to ITesseract

• Set which engine tesseract should use by providing TesseractOcrMaui.Enums.EngineMode
• Closes issue #22

interface ITessearct
{
    /// <summary>
    /// Engine mode Tesseract should use, for example lstm or tesseract
    /// </summary>
    EngineMode EngineMode { get; set; }
}

Updated Windows and Android libraries to use tesseract 5.3.3

Add engine configuration property (issue #16) to ITesseract

Example of configuration

ITesseract tesseract = GetTesseract();    // This represents some way of getting ITesseract object, for example DI
tesseract.EngineConfiguration = (engine) =>
{
    // Engine uses DefaultSegmentationMode, if no other is passed as method parameter.
    // If ITesseract is injected to page, this is only way of setting PageSegmentationMode.
    // PageSegmentationMode defines how ocr tries to look for text, for example singe character or single word.
    // By default uses PageSegmentationMode.Auto.
    engine.DefaultSegmentationMode = TesseractOcrMaui.Enums.PageSegmentationMode.Auto;
    
    engine.SetCharacterWhitelist("abcdefgh");   // These characters ocr is looking for
    engine.SetCharacterBlacklist("abc");        // These characters ocr is not looking for
    // Now ocr should be only finding characters 'defgh'
};
    

• Bug fixes
• Issue #17 limitation is better represented when jpeg image is loaded as byte[] in Android physical device

Add new API methods to process images as

• byte array
• Leptonica Pix image
  Fix traineddata files always to be downloaded, even if they where already ready
  Bug fixes

• Fix dlls not loading in Windows
• Change Tesseract.cs Api so that it can throw DllNotFoundException if dll are not loaded correctly
• Docs updated in code

• Support many languages passed as string where languages are separated with plus (+) symbol
• New Tesseract.cs constuctor to make working without dependecy injection easier

• Bindings for Tesseract
• Dependency injection support
• Windows support
• Android support
• Easy to use high-level ITesseract Api

Supported platforms