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IronOCR - The C# Library Changelog

What's new in IronOCR - The C# Library 2023.1.0.11644

Jan 20, 2023
  • Adds Installation.LanguagePackDirectory for specifying path to .ocrdata files
  • Adds OcrInput.SelectTextColors for only reading text of specific colors
  • Fixes IronOcr for use with ClickOnce publishing and 'dotnet publish' command
  • Fixes some instances where language packs would fail to load
  • Fixes crop rectangle being ignored when reading from TIFF images
  • Fixes trial users not being able to read text from images
  • Allows single-threaded OCR reads (see IronTesseract.Multithreaded)

New in IronOCR - The C# Library 2022.12.0.10390 (Dec 7, 2022)

  • Major Changes:
  • Adds IronSoftware.System.Drawing to replace System.Drawing.Common in IronOCR
  • Removes internal dependency on System.Drawing.Common (see footnote [1] for more info)
  • Adds support for .NET 7
  • Removes support for .NET Framework 4. Minimum supported for .NET Framework is now version 4.6.2
  • Other Changes:
  • Improves support for many Linux Distros
  • Improves OcrFilters.DeNoise : Now reduces speckle noise.
  • Adds brand new OcrFilters to improve reading from noisy images:
  •  Open : Filter that is useful for removing noise.
  •  Close : Filter that is useful for closing small holes inside foreground objects.
  •  AdaptiveThreshold : Applies a Bradley Adaptive Threshold to the image.

New in IronOCR - The C# Library 2022.10.9390 (Sep 28, 2022)

  • Adds support for using machine learning technology to detect regions which may contain text
  • Adds OcrInput methods FindTextRegion and FindMultipleTextRegions - add the IronOcr.ComputerVision NuGet package for your platform
  • Adds OcrResult method SaveAsSearchablePdfStream for saving a result as a PDF stream
  • Updates Windows build to require fewer dependencies and use less disk space
  • Updates image loading to always remove color tables from images before performing OCR, improving accuracy
  • Fixes GetCropRectangleImage to work properly with all source image formats
  • Fixes issue with Installation.LoggingMode and LogFilePath not applying properly

New in IronOCR - The C# Library 2022.8.8198 (Aug 19, 2022)

  • Added new method for applying multiple filters at once. See OcrInput.ApplyMultipleFilters()
  • Changes Deskew filter to no longer throw an exception on failure
  • Improves compatibility on Windows systems which may not have Microsoft C++ redistributables installed

New in IronOCR - The C# Library 2022.8.7804 (Jul 26, 2022)

  • Updates Tesseract to version 5.1
  • Adds support for Apple Silicon devices (MacOs on ARM processor)
  • Adds OcrInput.SaveAsImages() for saving input items as an image
  • Adds CropRectangle class which allows cropping using millimeter values or pixel values
  • Removes MinimumDpi. Please use TargetDpi to upscale your OCR input
  • Setting TargetDpi to null now prevents IronOcr from upscaling images, resulting in much smaller searchable PDFs
  • Fixes bug where Erosion filter applied Dialation and Dialation filter applied Erosion
  • Fixes bug where PDF pages were numbered incorrectly
  • Improves compatibility across various Linux distributions

New in IronOCR - The C# Library 2022.3.0 (May 20, 2022)

  • Improved: Net 6 Support
  • Improved: Secuirty & Performance

New in IronOCR - The C# Library 2022.1.0 (Jan 17, 2022)

  • Improved: Multithreading & Performance
  • Improved: PDF OCR performance
  • Feature: OCR Progress Tracking
  • Improved: Orientation and Script Detection (OSD)
  • Improved: Deskew Methods
  • Improved: Secuirty & Performance

New in IronOCR - The C# Library 2021.12.0.0 (Dec 28, 2021)

  • Improved: Speed and Stability
  • Improved: .Net 5 and .NET 6 Beta support
  • Improved: Logging

New in IronOCR - The C# Library 2021.11.0.0 (Nov 2, 2021)

  • Bug Fixed: Azure Function Compatibility
  • Bug Fixed: Works with read-only OCR dictionaries
  • Bug Fixed: Now works with .Net 5.07
  • Bug Fixed: License Keys reading from project configuration files (edge casess)
  • Feature: Color replacement methods added to OcrInput
  • Feature: Load specfic frames from TIFF and PDF files
  • Improved: Updated System.Drawing.Common

New in IronOCR - The C# Library 2021.9.0.0 (Aug 24, 2021)

  • Bug Fixed: Azure Function Compatibility
  • Bug Fixed: Works with read-only OCR dictionaries
  • Bug Fixed: Now works with .Net 5.07
  • Bug Fixed: License Keys reading from project configuration files (edge casess)
  • Feature: Color replacement methods added to OcrInput
  • Feature: Load specfic frames from TIFF and PDF files
  • Improved: Updated System.Drawing.Common

New in IronOCR - The C# Library 2020.12.2.0 (Dec 14, 2020)

  • Added OcrResult.SaveAsSearchablePdfBytes Method
  • Added OcrResult.SaveAsHocrString Method
  • Resolved OcrData Installation Issues
  • Improved MVC, WinForms and Azure Function Compatibility