Changelog: Updates, milestones, roadmap

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IronOCR Roadmap

We developed IronOCR to fill a market need and it’s excelled as one of our leading products. Today we are continually shipping new feature requests, driven by community demand.

We actively work with Google’s latest Tesseract technology to drive stability and high accuracy. This ensures our customers are benefiting from the cutting edge OCR reading engine.

Our monthly releases see IronOCR continually prove its worth, and drive our mission to help end users move the .NET language forward.

We know IronOCR is one of the top choices developers make¹. To cement IronOCR as the leading product of its kind we are applying the latest technology to improve image filters, computer vision and machine learning.

Our next epic will be to launch IronOCR for multiple programming languages.

¹Based on a customer survey conducted in June, 2022.

December 2022

IronOCR v2022.12.10830

Dec 5, 2022
Version 2022.12.10830

Features & Upgrades

Release Notes:

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.

[1] Note about removal of System.Drawing.Common:

  • Microsoft has discontinued support for System.Drawing.Common on non-Windows for .NET 6, and completely for .NET 7 :
  • In order to handle this, we have developed an open-source library called IronSoftware.System.Drawing which easily translates between all the common types and formats that System.Drawing.Common did which will replace it
  • Customers who still want to use System.Drawing.Common with IronOCR will still be able to. IronSoftware.System.Drawing will work with this format but since System.Drawing.Common is no longer a dependency, usage will require the customer to add a `using System.Drawing.Common;` call in their code.

October 2022

IronOCR v2022.11.10109

Oct 26, 2022
Version 2022.11.10109

Features & Upgrades

Release Notes:

  • Fixes MAUI support
  • Fixes 'missing runtimes folder' error
  • Fixes 'missing libtesseract' error
  • Greatly improved compatibility and deployment on many platforms
  • Adds 'Installation.MachineLearningModelsDirectory' for specifying path to .onnx files
  • Minor bug fixes
  • Now supports installation via zip file or installer

September 2022

IronOCR v2022.10.9390

Sep 27, 2022
Version 2022.10.9390

Features & Upgrades

Release Notes:

  • 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

August 2022

IronOCR v2022.8.8198

Aug 18, 2022
Version 2022.8.8198

Features & Upgrades

Release Notes:

  • Added new method for visualizing a crop rectangle on an image. See OcrInput.StampCropRectangleAndSaveAs()
  • 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
  • Improves compatibility on MacOs systems (both Intel and Apple Silicon) which may be missing certain imaging libraries

July 2022

IronOCR v2022.8.7804

Jul 26, 2022
Version 2022.8.7804

Features & Upgrades

Release Notes:

  • 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

March 2022

IronOCR v2022.3.0

Mar 10, 2022
Version 2022.3.0

Features & Upgrades

Release Notes:

  • Improved: .NET 6 Support
  • Improved: Secuirty & Performance

January 2022

IronOCR v2022.1.0

Jan 17, 2022
Version 2022.1.0

Features & Upgrades

Release Notes:

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

December 2021

IronOCR v2021.12.0

Dec 21, 2021
Version 2021.12.0

Features & Upgrades

Release Notes:

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

October 2021

IronOCR v2021.11.0

Oct 29, 2021
Version 2021.11.0

Features & Upgrades

Release Notes:

  • 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